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Books

Chandran C. V., Heitjans P. (2016): Solid-State NMR Studies of Lithium Ion Dynamics Across Materials Classes, Annual Reports on NMR Spectroscopy, Vol. 89 (Ed.: G. A. Webb), Oxford: Academic Press, pp. 1-102.
DOI: 10.1016/bs.arnmr.2016.03.001
ISBN: 978-0-12-804712-5

Epp V., Wilkening M. (2015): Li Ion Dynamics in Solids as Seen via Relaxation NMR, Handbook of Solid State Batteries (Eds.: N. J. Dudney, W. C. West, J. Nanda), World Scientific, Singapore, pp. 133-190.
ISBN: 978-981-4651-89-9

Journale

Breuer S., Gombotz M., Pregartner V., Hanzu I., Wilkening M. (2019): Heterogeneous F anion transport, local dynamics and electrochemical stability of nanocrystalline La1−xBaxF3−x , Energy Storage Mater. 16 (2019) 481.
DOI: 10.1016/j.ensm.2018.10.010

Gadermaier B., Stanje B., Wilkening A., Hanzu I., Heitjans, P., Wilkening H. M. (2019): Glass in Two Forms: Heterogeneous Electrical Relaxation in Nanoglassy Petalite, J. Phys. Chem. C., 2019, 123 (15), 10153–10162.
DOI: 10.1021/acs.jpcc.9b01423

Gombotz M., Lunghammer S., Breuer S., Hanzu I., Preishuber-Pflügl F., Wilkening H.M.R. (2019): Spatial confinement − Rapid 2D F diffusion in microcrystalline and nanocrystalline RbSn2F5 , Phys. Chem. Chem. Phys., 2019, 21, 1872-1883.
DOI: 10.1039/C8CP07206J

Hanghofer I., Brinek M., Eisbacher S. L., Bitschnau B., Volck M., Hennige V., Hanzu I., Rettenwander D., Wilkening H. M. R. (2019): Substitutional disorder: structure and ion dynamics of the argyrodites Li6PS5Cl, Li6PS5Br and Li6PS5I, Phys. Chem. Chem. Phys. 21 (2019) 8489.
DOI: 10.1039/C9CP00664H

Hüger E., Stahn J., Heitjans P., Schmidt H. (2019): Neutron Reflectometry to Measure in-situ the Rate Determining Step of Lithium Ion Transport through Thin Silicon Layers and Interfaces, Phys. Chem. Chem. Phys, 2019, accepted.
DOI: 10.1039/C9CP01222B

Paulus M. C., Paulus A., Schleker P. P. M., Jakes P., Eichel R.-A., Heitjans P., Granwehr J. (2019): Experimental Evidence for the Relaxation Coupling of all Longitudinal 7Li Magnetization Orders in the Superionic Conductor Li10GeP2S12, J. Magn. Reson., 2019, 303, 57-66.
DOI: 10.1016/j.jmr.2019.04.006

Wang Q., Sarkar A., Wang D., Velasco L., Azmi R., Bhattacharya S. S., Bergfeldt T., Düvel A., Heitjans P., Brezesinski T., Hahn H., Breitung B. (2019): Multi-Anionic and -Cationic Compounds: New High Entropy Materials for Advanced Li-Ion Batteries, Energy Environ. Sci., 2019, accepted.
DOI: 10.1039/C9EE00368A

Breuer S., Uitz M., Wilkening H.M.R. (2018): Rapid Li ion dynamics in the interfacial regions of nanocrystalline solids, J. Phys. Chem. Lett. 9 (2018) 2093.
DOI: 10.1021/acs.jpclett.8b00418

Breuer S., Wilkening M. (2018): Mismatch in cation size causes rapid anion dynamics in solid electrolytes: the role of the Arrhenius prefactor , Dalton Trans. 47 (2018) 4105.
DOI: 10.1039/C7DT04487A

Hanghofer I., Redhammer G.J., Rohde S., Hanzu I., Senyshyn A., Wilkening H.M.R., Rettenwander D. (2018): Untangling Structure and Dynamics of Lithium-Rich Anti-Perovskites Envisaged as Solid Electrolytes for Batteries, Chem. Mater 30 (2018) 8134.
DOI: 10.1021/acs.chemmater.8b02568

Lunghammer S., Ma Q., Rettenwander D., Tietz F., Wilkening M. (2018): Bulk and grain-boundary ionic conductivity in sodium zirconophosphosilicate Na3Zr2(SiO4)2PO4 (NASICON) , Chem. Phys. Lett. 701 (2018) 147.
DOI: 10.1016/j.cplett.2018.04.037

Lunghammer S., Prutsch D., Breuer S., Rettenwander D., Hanzu I., Ma Q., Tietz F., Wilkening M. (2018): Fast Na ion transport triggered by rapid ion exchange on local length scales: 23Na NMR spin-lattice relaxation reveals ultrafast Na ion dynamics in the solid electrolyte Na3.4Sc0.4Zr1.6(SiO4)2PO4, Sci. Rep. 8 (2018) 11970.
DOI: 10.1038/s41598-018-30478-7

Prutsch D., Gadermaier B., Brandstätter H., Pregartner V., Stanje B., Wohlmuth D., Epp V., Rettenwander D., Hanzu I., Wilkening H.M.R. (2018): Nuclear spin relaxation in nanocrystalline β-Li3PS4 reveals low-dimensional Li diffusion in an isotropic matrix, Chem. Mater. 30 (2018) 7575.
DOI: 10.1021/acs.chemmater.8b02753

Schwarzmüller S., Jakob M., Nentwig M., Schröder T., Kuhn A., Düvel A., Heitjans P., Oeckler O. (2018): Tuning the Vacancy Concentration in Lithium Germanium Antimony Tellurides—Influence on Phase Transitions, Lithium Mobility, and Thermoelectric Properties, Chem. Mater., 2018, 30, 7970-7978.
DOI: 10.1021/acs.chemmater.8b03609

Stanje B., Bottke P., Breuer S., Hanzu I., Heitjans P., Wilkening M.  (2018): Ion Dynamics in a New Class of Materials: Nanoglassy Lithium Alumosilicates, Mater. Res. Express, 2018, 5, 035202.
DOI: 10.1088/2053-1591/aab520

Chadwick A. V., Pickup D. M., Ramos S., Cibin G., Tapia-Ruiz N., Breuer S., Wohlmuth D., Wilkening M. (2017): An X-Ray Absorption Spectroscopy Study of Ball-Milled Lithium Tantalate and Lithium Titanate Nanocrystals, IOP Conf. Ser.: Mater. Sci. Eng., 169, 012015.
DOI: 10.1088/1757-899X/169/1/012015

Chandran C. V., Volgmann K., Nakhal S., Uecker R., Witt E., Lerch M., Heitjans P. (2017): Local Ion Dynamics in Polycrystalline β-LiGaO2: A Solid-State NMR Study, Z. Phys. Chem., 2017, 231(7-8), 1443-1453.
DOI: 10.1515/zpch-2016-0920

Heitjans P. (2017): Mobility of Ions in Solids, Z. Phys. Chem., 2017, 231(7-8), 1211-1213.
DOI: 10.1515/zpch-2017-5000

Islam M. M., Uhlendorf J., Witt E., Schmidt H., Heitjans P., Bredow T. (2017): Lithium Diffusion Mechanisms in β-LiMO2 (M = Al, Ga): A Combined Experimental and Theoretical Study, J. Phys. Chem. C, 2017, 121, 27788-27796.
DOI: 10.1021/acs.jpcc.7b06460

Murawski D., Behrens H. (2017): Effect of Particle Size and Pretreatment on the Conductivity of Glass Powder during Compaction, Z. Phys. Chem., 2017, 231(7-8), 1323-1343.
DOI: 10.1515/zpch-2016-0926

Prutsch D., Breuer S., Uitz M., Bottke P., Langer J., Lunghammer S., Philipp M., Posch P., Pregartner V., Stanje B., Dunst A., Wohlmuth D., Brandstätter H., Schmidt W., Epp V., Chadwick A., Hanzu I., Wilkening M. (2017): Nanostructured Ceramics: Ionic Transport and Electrochemical Activity, Z. Phys. Chem., 2017, 231(7-8), 1361-1405.
DOI: 10.1515/zpch-2016-0924

Schafzahl L., Hanzu I., Wilkening M., Freunberger S. A. (2017): An Electrolyte for Reversible Cycling of Na Metal and Na Intercalation Compounds, ChemSusChem, 10 (2), 401-408.
DOI: 10.1002/cssc.201601222

Schwarzburger N. I., Behrens H., Horn I., Binnewies M. (2017): On the Mechanism of Chemical Intercalation of Lithium in Electrode Materials, Z. Phys. Chem., 2017, 231(7-8), 1345-1359.
DOI: 10.1515/zpch-2016-0938

Skripov A. V., Volgmann K., Chandran C. V., Skoryunov R. V., Babanova O. A., Soloninin A. V., Orimo S., Heitjans P. (2017): NMR Studies of Lithium Diffusion in Li3(NH2)2I Over Wide Range of Li+ Jump Rates, Z. Phys. Chem., 2017, 231(7-8), 1455-1465.
DOI: 10.1515/zpch-2016-0925

Stanje B., Rettenwander D., Breuer S., Uitz M., Berendts S., Lerch M., Uecker R., Redhammer G., Hanzu I., Wilkening M. (2017): Solid Electrolytes: Extremely Fast Charge Carriers in Garnet-Type Li6La3ZrTaO12 Single Crystals, Ann. Phys., 529 (12), 1700140.
DOI: 10.1002/andp.201700140

Turianicová E., Witte R., Da Silva K. L., Zorkovská A., Senna M., Hahn H., Heitjans P., Sepelák V. (2017): Combined Mechanochemical/Thermal Synthesis of Microcrystalline Pyroxene LiFeSi2O6 and One-Step Mechanosynthesis of Nanoglassy LiFeSi2O6−Based Composite , J. Alloys Compd., 707, 310-314.
DOI: 10.1016/j.jallcom.2016.11.172

Uhlendorf J., Ruprecht B., Witt E., Chandran C. V., Dörrer L., Hüger E., Strauß F., Heitjans P., Schmidt H. (2017): Slow Lithium Transport in Metal Oxides on the Nanoscale, Z. Phys. Chem., 2017, 231(7-8), 1423-1442.
DOI: 10.1515/zpch-2016-0939

Uitz M., Epp V., Bottke P., Wilkening M. (2017): Ion dynamics in solid electrolytes for lithium batteries - Probing jump rates and activation energies through time-domain Li NMR, J Electroceram, 1-15.
DOI: 10.1007/s10832-017-0071-4

Volgmann K., Epp V., Langer J., Stanje B., Heine J., Nakhal S., Lerch M., Wilkening M., Heitjans P. (2017): Solid-State NMR to Study Translational Li Ion Dynamics in Solids with Low-Dimensional Diffusion Pathways, Z. Phys. Chem., 2017, 231(7-8), 1215-1241.
DOI: 10.1515/zpch-2017-0952

Volgmann K., Werth V., Nakhal S., Lerch M., Bredow T., Heitjans P. (2017): Solid-State NMR Spectroscopy Study of Cation Dynamics in Layered Na2Ti3O7 and Li2Ti3O7, Z. Phys. Chem., 2017, 231(7-8), 1243-1262.
DOI: 10.1515/zpch-2016-0948

Welsch A.-M., Behrens H., Murawski D., Horn I. (2017): Lithium Mobility in Borate and Phosphate Glass Networks, Z. Phys. Chem., 2017, 231(7-8), 1303-1321.
DOI: 10.1515/zpch-2016-0927

Werth V., Volgmann K., Islam M. M., Heitjans P., Bredow T. (2017): Density Functional Theory Evaluated for Structural and Electronic Properties of 1T-LixTiS2 and Lithium Ion Migration in 1T-Li0.94TiS2, Z. Phys. Chem., 2017, 231(7-8), 1263-1278.
DOI: 10.1515/zpch-2016-0919

Wiedemann D., Islam M. M., Bredow T., Lerch M. (2017): Diffusion Pathways and Activation Energies in Crystalline Lithium-Ion Conductors, Z. Phys. Chem., 2017, 231(7-8), 1279-1302.
DOI: 10.1515/zpch-2016-0918

Witt E., Chandran C. V., Heitjans P. (2017): Slow Ion Exchange in Crystalline Li2SO4·H2O: A 6Li 2D EXSY NMR Investigation, Solid State Ionics, 304, 60-64.
DOI: 10.1016/j.ssi.2017.03.016

Wittich O., Meyer F., Wark M. (2017): Lithium Insertion into Mixed Phase Titania Nanotubes, Z. Phys. Chem., 2017, 231(7-8), 1407-1421.
DOI: 10.1515/zpch-2016-0917

Bösebeck K., Chandran C. V., Licht B. K., Binnewies M., Heitjans P. (2016): Improved Electrochemical Performance of Modified Mesocarbon Microbeads for Lithium-Ion Batteries Studied using Solid-State Nuclear Magnetic Resonance Spectroscopy, Energy Technol., 12, 1598-1603.
DOI: 10.1002/ente.201600211

Brandstätter H., Hanzu I., Wilkening M. (2016): Myth and Reality about the Origin of Inductive Loops in Impedance Spectra of Lithium-Ion Electrodes — A Critical Experimental Approach, Electrochim. Acta, 207, 218-223.
DOI: 10.1016/j.electacta.2016.03.126

Bülter H., Sternad M., dos Santos Sardinha E., Witt J., Dosche C., Wilkening M., Wittstock G. (2016): Investigation of the Electron Transfer at Si Electrodes: Impact and Removal of the Native SiO2 Layer, J. Electrochem. Soc. 163, A504.
DOI: 10.1149/2.0731603jes

Burow D., Sergeeva K., Calles S., Schorb K., Börger A., Roth C., Heitjans P. (2016): Inhomogeneous degradation of graphite anodes in automotive lithium ion batteries under low-temperature pulse cycling conditions, J. Power Sources, 307, 806.
DOI: 10.1016/j.jpowsour.2016.01.033

Chandran C. V., Heitjans P. (2016): Solid-State NMR Studies of Lithium Ion Dynamics Across Materials Classes, Annual Reports on NMR Spectroscopy, 89, 1-102.
DOI: 10.1016/bs.arnmr.2016.03.001

Chandran C. V., Pristat S., Witt E., Tietz F., Heitjans P. (2016): Solid-State NMR Investigations on the Structure and Dynamics of the Ionic Conductor Li1+xAlxTi2–x(PO4)3 (0.0≤x≤1.0), J. Phys. Chem. C, 120 (16), 8436–8442.
DOI: 10.1021/acs.jpcc.6b00318

Dunst A., Sternad M., Wilkening M. (2016): Overall Conductivity and NCL-Type Relaxation Behavior in Nano-Crystalline Sodium Peroxide Na2O2 — Consequences for Na-Oxygen Batteries, Mat. Sci. Eng. B 211, 85-93.
DOI: 10.1016/j.mseb.2016.06.002

Islam M. M., Bredow T. (2016): Lithium Diffusion Pathways in β-Li2TiO3: A Theoretical Study, J. Phys. Chem. C, 120 (13), 7061–7066.
DOI: 10.1021/acs.jpcc.6b02613

Islam M. M., Heitjans P., Bredow T. (2016): Structural Analysis and Li Migration Pathways in Ramsdellite Li2Ti3O7: A Theoretical Study, J. Phys. Chem. C, 120, 5.
DOI: 10.1021/acs.jpcc.5b07942

Jeevan Kumar P., Nishimura K., Senna M., Düvel A., Heitjans P., Kawaguchi T., Sakamoto N., Wakiya N., Suzuki H. (2016): A novel low-temperature solid-state route for nanostructured cubic garnet Li7La3Zr2O12 and its application to Li-ion battery, RSC Adv. 6, 62656-62667.
DOI: 10.1039/c6ra09695f

Langer J., Smiley D. L., Bain A. D., Goward G. R., Wilkening M. (2016): An Unexpected Pathway: 6Li-Exchange NMR Spectroscopy Points to Vacancy-Driven Out-of-Plane Li-Ion Hopping in Crystalline Li2SnO3, J. Phys. Chem. C, 120, 3130.
DOI: 10.1021/acs.jpcc.5b09894

Langer J., Wilkening M. (2016): Ultra-slow Li ion jump diffusion in Li2SnO3 studied by two-time 7Li spin-alignment echo NMR and 7Li NMR relaxometry, Solid State Ionics 293, 85-93.
DOI: 10.1016/j.ssi.2016.06.011

Nakhal S., Wiedemann D., Stanje B., Dolotko O., Wilkening M., Lerch M. (2016): LiBi3S5—A Lithium Bismuth Sulfide with Strong Cation Disorder, J. Solid State Chem., 238, 60-67.
DOI: doi:10.1016/j.jssc.2016.03.010

Plaimer M., Breitfuß C., Sinz W., Heindl S. F., Ellersdorfer C., Steffan H., Wilkening M., Hennige V., Tatschl R. et al (2016): Evaluating the trade-off between electrochemical and mechanical performance of separators for lithium-ion batteries: Methodology and application, J. Power Sources 308, 702.
DOI: doi:10.1016/j.jpowsour.2015.12.047

Prutsch D., Wilkening M., Hanzu I. (2016): Electrochemical preparation of tin–titania nanocomposite arrays, RSC Advances 6, 98243-98247.
DOI: 10.1039/c6ra19209b

Rettenwander D., Redhammer G., Preishuber-Pflügl F., Cheng L., Miara L., Wagner R., Welzl A., Suard E., Doeff M.M., Wilkening M., Fleig J., Amthauer G.  (2016): Structural and Electrochemical Consequences of Al and Ga co-substitution in Li7La3Zr2O12 Solid Electrolytes, Chem. Mater., 28 (7), 2384–2392.
DOI: 10.1021/acs.chemmater.6b00579

Rettenwander D., Wagner R., Langer J., Maier M. E., Wilkening M., Amthauer G. (2016): Crystal chemistry of “Li7La3Zr2O12” garnet doped with Al, Ga, and Fe: a short review on local structures as revealed by NMR and Mößbauer spectroscopy studies, Eur. J. Mineral., 28 (3), 619-629(11).
DOI: 10.1127/ejm/2016/0028-2543

Robben L., Merzlyakova E., Heitjans P., Gesing T. M. (2016): Symmetry reduction due to gallium substitution in the garnet Li6.43(2)Ga0.53(3)La2.67(4)Zr2O12, Acta Cryst., E72, 287.
DOI: 10.1107/S2056989016001924

Schmidt W., Wilkening M. (2016): Diffusion-induced 7Li NMR spin-lattice relaxation of fully lithiated, mixed-conducting Li7Ti5O12, Solid State Ion. 287, 77-82.
DOI: 10.1016/j.ssi.2016.02.012

Schmidt W., Wilkening M., (2016): Discriminating the Mobile Ions from the Immobile Ones in Li4+xTi5O12: 6Li NMR Reveals the Main Li+ Diffusion Pathway and Proposes a Refined Lithiation Mechanism, J. Phys. Chem. C, 120, 11372-11381.
DOI: 10.1021/acs.jpcc.6b02828

Senna M., Fabián M., Kavan L., Zukalová M., Briančin J., Turianicová E., Bottke P., Wilkening M., Šepelák V. (2016): Electrochemical properties of spinel Li4Ti5O12 nanoparticles prepared via a low-temperature solid route, J Solid State Electrochem., 20, 2673.
DOI: 10.1007/s10008-016-3272-x

Sternard M., Forster M., Wilkening M. (2016): The microstructure matters: breaking down the barriers with single crystalline silicon as negative electrode in Li-ion batteries, Sci. Rep. 6, 31712.
DOI: 10.1038/srep31712

Strauß F., Hüger E., Heitjans P., Geue T., Stahn J., Schmidt H. (2016): Lithium Permeation through Thin Lithium–Silicon Films for Battery Applications Investigated by Neutron Reflectometry, Energy Technol., 12, 1582-1587.
DOI: 10.1002/ente.201600209

Tsai C.-L., Roddatis V., Chandran C. V., Ma Q., Uhlenbruck S., Bram M., Heitjans P., Guillon O. (2016): Li7La3Zr2O12 Interface Modification for Li Dendrite Prevention, ACS Appl. Mater. Interfaces 8, 10617-10626.
DOI: 10.1021/acsami.6b00831

Wagner R., Redhammer G. J., Rettenwander D., Senyshyn A., Schmidt W., Wilkening M., Amthauer G. (2016): Crystal structure of garnet-related Li-ion conductor Li7-3xGaxLa3Zr2O12: Fast Li-ion conduction caused by a different cubic modification?, Chem. Mater., 28 (6), 1861–1871.
DOI: 10.1021/acs.chemmater.6b00038

Wagner R., Rettenwander D., Redhammer G. J., Tippelt G., Sabathi G., Musso M. E., Stanje B., Wilkening M., Suard E., Amthauer G. (2016): Synthesis, Crystal Structure, and Stability of Cubic Li7–xLa3Zr2–xBixO12, Inorg. Chem., 55(23), 12211-12219.
DOI: 10.1021/acs.inorgchem.6b01825

Wiedemann D., Indris S., Meven M., Pedersen B., Boysen H., Uecker R., Heitjans P., Lerch M. (2016): Single-crystal neutron diffraction of γ-LiAlO2: structure determination and estimation of lithium diffusion pathway, Z. Kristallogr., 231, 189.
DOI: 10.1515/zkri-2015-1896

Wiedemann D., Nakhal S., Franz A., Lerch, M. (2016): Lithium diffusion pathways in metastable ramsdellite-like Li2Ti3O7 from high-temperature neutron diffraction, Solid State Ionics 293, 37-43.
DOI: 10.1016/j.ssi.2016.06.002

Wiedemann D., Nakhal S., Rahn J., Witt E., Islam M. M., Zander S., Heitjans P., Schmidt H., Bredow T., Wilkening M., Lerch M. (2016): Unravelling Ultraslow Lithium-Ion Diffusion in γ-LiAlO2: Experiments with Tracers, Neutrons, and Charge Carriers, Chem. Mater., 28, 915.
DOI: 10.1021/acs.chemmater.5b04608

Wohlmuth D., Epp V., Stanje B., Welsch A.-M., Behrens H., Wilkening M. (2016): High-Energy Mechanical Treatment Boosts Ion Transport in Nanocrystalline Li2B4O7, J. Am. Ceram. Soc., 99 (5), 1687–1693.
DOI: 10.1111/jace.14165

Bottke P., Rettenwander D., Schmidt W., Amthauer G., Wilkening M. (2015): Ion dynamics in solid electrolytes: NMR reveals the elementary steps of Li+ hopping in the garnet Li6.5La3Zr2.75Mo0.25O12, Chem. Mater., 27, 6571.
DOI: 10.1021/acs.chemmater.5b02231

Brandstätter H., Wohlmuth D., Bottke P., Pregartner V., Wilkening M. (2015): Li ion dynamics in nanocrystalline and structurally disordered Li2TiO3, Z. Phys. Chem., 229, 1363.
DOI: 10.1515/zpch-2014-0665

Breuer S., Prutsch D., Ma Q., Epp V., Preishuber-Pflügl F., Tietz F., Wilkening M.  (2015): Bulk and grain boundary Li ion conductivity in the solid electrolyte Li1.5Al0.5Ti1.5(PO4)3, J. Mater. Chem. A, 3, 21343.
DOI: 10.1039/C5TA06379E

Dunst A., Sternad M., Epp V., Wilkening M. (2015): Fast Li+ Self-Diffusion in Amorphous Li-Si Electrochemically Prepared From Semiconductor Grade, Monocrystalline Silicon — Insights from Spin-Locking Nuclear Magnetic Relaxometry, J. Phys. Chem. C, 119, 12183.
DOI: 10.1021/acs.jpcc.5b02490

Epp V., Ma Q., Hammer E., Tietz F., Wilkening M. (2015): Very Fast Li Ion Diffusivity in crystalline Li1.5Al0.5Ti1.5(PO4)3 as seen by NMR relaxometry, Phys. Chem. Chem. Phys. (Communication), 17, 32115.
DOI: 10.1039/C5CP05337D

Heitjans P. (2015): Lithium Ions in Solids – Between Basics and Better Batteries, Z. Phys. Chem., 229, 1263.
DOI: 10.1515/zpch-2015-9033

Hüger E., Dörrer L., Stahn J., Geue T., Schmidt H. (2015): Lithium Transport through Thin Silicon Layers: On the Origin of Bragg Peaks in Neutron Reflectometry Experiments, Defect Diffus. Forum 363, 49.
DOI: 10.4028/www.scientific.net/DDF.363.49

Hüger E., Jerliu B., Dörrer L., Bruns M., Borchardt G., Schmidt H. (2015): A Secondary Ion Mass Spectrometry Study on the Mechanisms of Amorphous Silicon Electrode Lithiation in Li-Ion Batteries, Z. Phys. Chem., 229, 1375.
DOI: 10.1515/zpch-2014-0650

Hüger E., Stahn J., Schmidt H.  (2015): Neutron Reflectometry to Measure In Situ Li Permeation through Ultrathin Silicon Layers and Interfaces Batteries and Energy Storage, J. Electrochem. Soc., 162, A7104.
DOI: 10.1149/2.0131513jes

Islam M. M., Bredow T. (2015): 3D Li Diffusion in c-LixTiS2 (x = 0.69 and 0.75): A Theoretical Study, Z. Phys. Chem., 229, 1265.
DOI: 10.1515/zpch-2014-0663

Knobel R., Behrens H., Schwarzburger N. I., Binnewies M., Horn I. (2015): Kinetics of Lithium Intercalation in TiX2 Single Crystals (X = S, Se, Te) under Hydrostatic Pressure, Z. Phys. Chem., 229, 1289.
DOI: 10.1515/zpch-2014-0662

Langer J., Epp V., Sternad M., Wilkening M. (2015): Diffusion-induced 7Li NMR relaxation of layer-structured tin disulfide - Li diffusion along the buried interfaces in Li0.17SnS2, Solid State Ion., 276, 56.
DOI: 10.1016/j.ssi.2015.03.039

Langer J., Wohlmuth D., Kovalcik A., Epp V., Stelzer F., Wilkening M. (2015): Mechanical detection of ultraslow, Debye-like Li-ion motions in LiAlO2 single crystals, Ann. Phys., 527, 523.
DOI: 10.1002/andp.201500205

Licht B. K., Homeyer F., Bösebeck K., Binnewies M., Heitjans P. (2015): Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries, Z. Phys. Chem., 229, 1415.
DOI: 10.1515/zpch-2015-0003

Murawski D., Roß S., Behrens H. (2015): A Novel Cell for Studying Ionic Transport in Powders During Compaction and Its Application to Lithium Silicate Glass Powder, Z. Phys. Chem., 229, 1313.
DOI: 10.1515/zpch-2015-0583

Prutsch D., Wilkening M., Hanzu I. (2015): Long Cycle-Life Na-ion Anodes Based on Amorphous Titania Nanotubes - Interfaces and Diffusion, ACS Appl. Mater. Interfaces, 7, 25757.
DOI: 10.1021/acsami.5b07508

Rahn J., Heitjans P., Schmidt H. (2015): Li Self-Diffusivities in Lithium Niobate Single Crystals as Function of Li2O Content, J. Phys. Chem. C, 119, 15557.
DOI: 10.1021/acs.jpcc.5b04391

Rahn J., Ruprecht B., Heitjans P., Schmidt H. (2015): Lithium Diffusion in Li-rich and Li-poor Amorphous Lithium Niobate, Defect and Diffusion Forum, 363, 62.
DOI: 10.4028/www.scientific.net/DDF.363.62

Rahn J., Witt E., Heitjans P., Schmidt H. (2015): Lithium Diffusion in Ion-Beam Sputtered Amorphous LiAlO2, Z. Phys. Chem., 229, 1341.
DOI: 10.1515/zpch-2014-0658

Rettenwander D., Langer J., Schmidt W., Arrer C., Harris K. J., Terskikh V., Goward G. R., Wilkening M., Amthauer G. (2015): Site Occupation of Ga and Al in Stabilized Cubic Li7−3(x+y)GaxAlyLa3Zr2O12 Garnets as Deduced from 27Al and 71Ga MAS NMR at Ultrahigh Magnetic Fields, Chem. Mater., 27, 3135.
DOI: 10.1021/acs.chemmater.5b00684

Ross S., Welsch A.-M., Behrens H. (2015): Lithium conductivity in glasses of the Li2O–Al2O3–SiO2 system , Phys. Chem. Chem. Phys., 17, 465.
DOI: 10.1039/C4CP03609C

Runkel M.-C., Wittich O., Feldhoff A., Wark M., Bredow T. (2015): Theoretical and Experimental Study of Anatase Nanotube Formation via Sodium Titanate Intermediates, J. Phys. Chem. C, 119 (9), 5048-5054.
DOI: 10.1021/jp5110399

Schmidt W., Bottke P., Sternad M., Gollob P., Hennige V., Wilkening M. (2015): Small change - great effect: Steep increase of Li ion dynamics in Li4Ti5O12 at the early stages of chemical Li insertion, Chem. Mater., 27, 1740.
DOI: 10.1021/cm504564k

Stanje B., Epp V., Nakhal S., Lerch M., Wilkening M. (2015): Li ion dynamics along the inner surfaces of layer-structured 2H-LixNbS2, ACS Appl. Mater. Interfaces, 7, 4089.
DOI: 10.1021/am5078655

Strauß F., Hüger E., Heitjans P., Trouillet V., Brunsc M., Schmidt H. (2015): Li–Si thin films for battery applications produced by ion-beam co-sputtering, RSC Adv., 5, 7192.
DOI: 10.1039/c4ra14458a

Volgmann K., Schulz A., Welsch A.-M., Bredow T., Nakhal S., Lerch M., Heitjans P. (2015): Lattice Vibrations to Identify the Li/Na Ratio in LixNa2-xTi6O13 (x = 0…2), Z. Phys. Chem., 229, 1351.
DOI: 10.1515/zpch-2015-0585

Welsch A-M., Murawski D., Prekajski M., Vulic P., Kremenovic A. (2015): Ionic conductivity in single-crystal LiAlSi2O6: influence of structure on lithium mobility, Phys. Chem. Miner., 42, 413.
DOI: 10.1007/s00269-015-0732-2

Wiedemann D., Islam M. M., Nakhal S., Senyshyn A., Bredow T., Lerch M. (2015): Lithium Diffusion Pathways in 3R-LixTiS2: A Combined Neutron Diffraction and Computational Study, J. Phys. Chem. C, 119, 11370.
DOI: 10.1021/acs.jpcc.5b01166

Wiedemann D., Nakhal S., Senyshyn A., Bredow T., Lerch M. (2015): The High-Temperature Transformation from 1T- to 3R-LixTiS2 (x = 0.7, 0.9) as Observed in situ with Neutron Powder Diffraction, Z. Phys. Chem., 229, 1275.
DOI: 10.1515/zpch-2014-0659

Wilkening M. (2015): The 3R modification of LixTiS2 — insights into local electronic structures from high-temperature in situ NMR spectroscopy, Phil. Mag., 95, 861.
DOI: 10.1080/14786435.2015.1010624

Witt E., Nakhal S., Chandran V. C., Lerch M., Heitjans P. (2015): NMR and Impedance Spectroscopy Studies on Lithium Ion Diffusion in Microcrystalline γ-LiAlO2, Z. Phys. Chem., 229, 1327.
DOI: 10.1515/zpch-2015-0587

Wohlmuth D., Epp V., Wilkening M. (2015): Fast Li Ion Dynamics in the Solid Electrolyte Li7P3S11 as Probed by 6,7Li NMR Spin-Lattice Relaxation, ChemPhysChem, 16, 2582.
DOI: 10.1002/cphc.201500321

Bottke P., Ren Y., Hanzu I., Bruce P. G., Wilkening M. (2014): Li ion dynamics in TiO2 anodes with an ordered hierarchical pore structure: Insights from ex situ Li NMR spectroscopy, Phys. Chem. Chem. Phys. 16, 1894.
DOI: 10.1039/C3CP54586E

Dunst A., Epp V., Hanzu I., Freunberger S., Wilkening M.  (2014): Short-range Li diffusion vs long-range ionic conduction in nanocrystalline lithium peroxide Li2O2 - the discharge product in lithium-air batteries, Energy Environ. Sci., 7, 2739.
DOI: 10.1039/C4EE00496E

Hüger E., Rahn J., Geue T., Stahn J., Heitjans P., Schmidt H. (2014): Lithium Diffusion in Congruent LiNbO3 Single Crystals at Low Temperatures Probed by Neutron Reflectometry, Phys. Chem. Chem. Phys. 16, 3670.
DOI: 10.1039/C3CP54939A

Kuhn A., Dupke S., Kunze M., Puravankara S., Langer T., Pöttgen R., Winter M., Wiemhöfer H.-D., Eckert H., Heitjans P. (2014): Insight into the Li Ion Dynamics in Li12 Si7: Combining Field Gradient Nuclear Magnetic Resonance, One- and Two-Dimensional Magic-Angle Spinning Nuclear Magnetic Resonance, and Nuclear Magnetic Resonance Relaxometry, J. Phys. Chem. C 118 , 28350.
DOI: 10.1021/jp505386u

Rettenwander D., Blaha P., Laskowski R., Schwarz K.-H., Bottke P., Wilkening M., Geiger C. A., Amthauer G. (2014): DFT Study of the Role of Al3+ in the Fast Ion-Conductor Li7-3xLa3Zr2O12 Garnet, Chem. Mater. 26, 2617.
DOI: 10.1021/cm5000999

Thinius S., Islam M., Heitjans P., Bredow T.  (2014): Theoretical Study of Li Migration in Lithium-Graphite Intercalation Compounds with Dispersion Corrected DFT Methods, J. Phys. Chem. C 118, 2273.
DOI: 10.1021/jp408945j

Wohlmuth D., Epp V., Bottke P., Bitschnau B., Letofsky-Papst I., Kriechbaum M., Amenitsch H., Hofer F., Wilkening M., Hanzu I.  (2014): Order vs Disorder ― Huge Increase in Ionic Conductivity of Nanocrystalline LiAlO2 Embedded in an Amorphous-like Matrix of Lithium Aluminate, J. Mater. Chem. A 2, 20295.
DOI: 10.1039/C4TA02923B

Bauer U., Welsch A.-M., Behrens H., Rahn J., Schmidt H., Horn I.  (2013): Li Diffusion and the Effect of Local Structure on Li Mobility in Li2O-SiO2 Glasses, J. Phys. Chem. B 117, 15184.
DOI: 10.1021/jp408805e

Bottke P., Freude D., Wilkening M. (2013): Ultraslow Li Exchange Processes in Diamagnetic Li2ZrO3 As Monitored by EXSY NMR, J. Phys. Chem. C 117, 8114.
DOI: 10.1021/jp401350u

Epp V., Gün O., Deiseroth H.-J., Wilkening M. (2013): Highly Mobile Ions: Low-Temperature NMR Directly Probes Extremely Fast Li+ Hopping in Argyrodite-Type Li6PS5Br, J. Phys. Chem. Lett. 4, 2118.
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Epp V., Gün O., Deiseroth H.-J., Wilkening M. (2013): Long-range Li+ dynamics in the Lithium argyrodite Li7PSe6 as probed by rotating-frame spin-lattice relaxation NMR, Phys. Chem. Chem. Phys. 15, 7123.
DOI: 10.1039/C3CP44379E

Epp V., Nakhal S., Lerch M., Wilkening M. (2013): Low-dimensional diffusion in Li0.7NbS2 as directly probed by frequency-dependent 7Li NMR, J. Phys.: Condens. Matter. 25, 195402.
DOI: 10.1088/0953-8984/25/19/195402

Epp V., Wilkening M. (2013): Motion of Li+ in Nanoengineered LiBH4 and LiBH4:Al2O3 Comparisons with the Microcrystalline Form, Chem. Phys. Chem. 14, 3706.
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Hanzu I., Hornebecq V., Djenizian T., Knauth P. (2013): In situ study of electrochromic properties of self-assembled TiO2 nanotubes, C. R. Chim. 16, 96.
DOI: 10.1016/j.crci.2012.11.005

Kohl J., Nakhal S., Ferro N., Bottke P., Wilkening M., Bredow T., Heitjans P., Lerch M. (2013): Low-Temperature Synthesis, Characterization, and Stability of Spinel-Type Li2NiF4 and Solid-Solutions Li2Ni1-xCoxF4, Z. Anorg. Allg. Chem. 639, 326.
DOI: 10.1002/zaac.201200455

Langer J., Epp V., Heitjans P., Mautner F. A., Wilkening M. (2013): Lithium motion in the anode material LiC6 as seen via time-domain 7Li NMR, Phys. Rev. B 88, 094304.
DOI: 10.1103/PhysRevB.88.094304

Nakhal S., Lerch M., Koopman J., Islam M. M., Bredow T. (2013): Crystal Structure of 3R-LitiS2 and its Stability Compared to Other Polymorphs, Z. Anorg. Allg. Chem. 639, 2822.
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Nakhal S., Weber D., Lerch M. (2013): Preparation and Crystal Structure of a New Lithium Vanadium Fluoride Li2VF6 with Trirutile-type Structure , Z. Naturforsch. B 68, 121.
DOI: 10.5560/ZNB.2013-2303

Rahn J., Dörrer L., Ruprecht B., Heitjans P., Schmidt H. (2013): Li Diffusion in (110) Oriented LiNbO3 Single Crystals, Def. Dif. Forum 333, 33.
DOI: 10.4028/www.scientific.net/DDF.333.33

Rosciano F., Pescarmona P.P., Houthoofd K., Persoons A., Bottke P., Wilkening M. (2013): Towards a lattice-matching solid-state battery: synthesis of a new class of lithium-ion conductors with the spinel structure, Phys. Chem. Chem. Phys. 15, 6107.
DOI: 10.1039/C3CP50803J

Epp V., Brünig C., Binnewies M., Heitjans P., Wilkening M. (2012): Studying Li Dynamics in a Gas-Phase Synthesized Amorphous Oxide by NMR and Impedance Spectroscopy, Z. Phys. Chem. 226, 513.
DOI: 10.1524/zpch.2012.0224

Hüger E., Rahn J., Stahn J., Geue T., Schmidt H. (2012): Diffusivity determination in bulk materials on nanometric length scales using neutron, Phys. Rev. B 85, 214102.
DOI: 10.1103/PhysRevB.85.214102

Islam M. M., Bredow T., Heitjans P. (2012): The ionic conductivity in lithium-boron oxide materials and its relation to structural, electronic and defect properties: insights from theory, J. Phys. - Condens. Mat. 24, 203201.
DOI: 10.1088/0953-8984/24/20/203201

Islam M. M., Wilkening M., Heitjans P., Bredow T. (2012): Insights into Li+ Migration Pathways in alpha-Li3VF6: A First-Principles Investigation, J. Phys. Chem. Lett. 3, 3120.
DOI: 10.1021/jz3014198

Islam M.M., Bredow T. (2012): Theoretical Investigation of Migration Pathways for Li Diffusion in h-LiTiS2, Z. Phys. Chem. 226, 449.
DOI: 10.1524/zpch.2012.0225

Kohl J., Wiedemann D., Nakhal S., Bottke P., Ferro N., Bredow T., Kemnitz E., Wilkening M., Heitjans P., Lerch M.  (2012): Synthesis of ternary transition metal fluorides Li3MF6 via a sol-gel route as candidates for cathode materials in lithium-ion batteries, J. Mater. Chem. 22, 15819.
DOI: 10.1039/c2jm32133e

Kuhn A., Choi J.Y., Robben L., Tietz F., Wilkening M., Heitjans P. (2012): Li Ion Dynamics in Al-Doped Garnet-Type Li7La3Zr2O12 Crystallizing with Cubic Symmetry, Z. Phys. Chem. 226, 525.
DOI: 10.1524/zpch.2012.0250

Kuhn A., Epp V., Schmidt G., Narayanan S., Thangadurai V., Wilkening M. (2012): Spin-alignment echo NMR: probing Li+ hopping motion in the solid electrolyte Li7La3Zr2O12 with garnet-type tetragonal structure, J. Phys. Condens. Matter. 24, 035901.
DOI: 10.1088/0953-8984/24/3/035901

Kuhn A., Kunze M., Sreeraj P., Wiemhöfer H.-D., Thangadurai V., Wilkening M., Heitjans P. (2012): NMR Relaxometry as a Versatile Tool to Study Li Ion Dynamics in Potential Battery Materials, Solid State Nucl. Magn. Reson. 42, 2.
DOI: 10.1016/j.ssnmr.2012.02.001

Narayanan S., Epp V., Wilkening M., Thangadurai V. (2012): Macroscopic and microscopic Li+ transport parameters in cubic garnet-type Li6.5La2.5Ba0.5ZrTaO12 as probed by impedance spectroscopy and NMR, RSC Adv. 2, 2553.
DOI: 10.1039/c2ra01042a

Rahn J., Hüger E., Dörrer L., Ruprecht B., Heitjans P., Schmidt H. (2012): A SIMS Study on Li Diffusion in Single Crystalline and Amorphous LiNbO3, Def. Diff. Forum 323, 69.
DOI: 10.4028/www.scientific.net/DDF.323-325.69

Rahn J., Hüger E., Dörrer L., Ruprecht B., Heitjans P., Schmidt H. (2012): Li self-diffusion in lithium niobate single crystals at low temperatures, Phys. Chem. Chem. Phys. 14, 2427.
DOI: 10.1039/c2cp23548j

Rahn J., Hüger E., Dörrer L., Ruprecht B., Heitjans P., Schmidt H. (2012): Self-Diffusion of Lithium in Amorphous Lithium Niobate Layers, Z. Phys. Chem. 226, 439.
DOI: 10.1524/zpch.2012.0214

Ruprecht B., Rahn J., Schmidt H., Heitjans P. (2012): Low-Temperature DC Conductivity of LiNbO3 Single Crystals, Z. Phys. Chem. 226, 431.
DOI: 10.1524/zpch.2012.0226

Ruprecht B., Wilkening M., Uecker R., Heitjans P. (2012): Extremely slow Li ion dynamics in monoclinic Li2TiO3–probing macroscopic jump diffusion via 7Li NMR stimulated echoes, Phys. Chem. Chem. Phys. 14, 11974
DOI: 10.1039/c2cp41662j

Schwarzburger N. I., Knobel R., Behrens H., Binnewies M., Horn I., Pelster A., Arlinghaus H. F., Dörrer L., Schmidt H. (2012): Kinetics of Lithium Intercalation in Titanium Disulfide Single Crystals, Z. Phys. Chem. 226, 461.
DOI: 10.1524/zpch.2012.0227

Sharifi M., Wark M., Freude D., Haase J. (2012): Highly proton conducting sulfonic acid functionalized mesoporous materials studied by impedance spectroscopy, MAS NMR spectroscopy and MAS PFG NMR diffusometry, Micropor. Mesopor. Mater. 156, 80.
DOI: 10.1016/j.micromeso.2012.02.019

Welsch A.-M., Behrens H., Horn I., Ross S., Heitjans P. (2012): Self-Diffusion of Lithium in LiAlSi2O6 Glasses Studied Using Mass Spectrometry, J. Phys. Chem A, 116, 309.
DOI: 10.1021/jp209319b

Welsch A.-M., Behrens H., Ross S., Murawski D. (2012): Structural Control of Ionic Conductivity in LiAlSi2O6 and LiAlSi4O10 Glasses and Single Crystals, Z. Phys. Chem., 226, 491.
DOI: 10.1524/zpch.2012.0230

Wilkening M. (2012): Diffusion in Solids, Z. Phys. Chem., 226, 337.
DOI: 10.1524/zpch.2012.9008

Wilkening M., Heitjans P. (2012): From Micro to Macro: Access to Long-Range Li+ Diffusion Parameters in Solids via Microscopic 6,7Li Spin-Alignment Echo NMR Spectroscopy, ChemPhysChem. 13, 53.
DOI: 10.1002/cphc.201100580

Buschmann H., Dölle J., Berendts S., Kuhn A., Bottke P., Wilkening M., Heitjans P., Senyshyn A., Ehrenberg H., Lotnyk A., Duppel V., Kienle L., Janek J. (2011): Structure and dynamics of the fast lithium ion conductor "Li7La3Zr2O12", Phys. Chem. Chem. Phys., 13, 19378.
DOI: 10.1039/C1CP22108F

Islam M. M., Bredow T., Heitjans P. (2011): Formation and Mobility of Li Point Defects in LiBO2: A First-Principles Investigation, J. Phys. Chem. C 115, 12343.
DOI: 10.1021/jp203045f

Kuhn A, Sreeraj P., Pöttgen R., Wiemhöfer H.-D., Wilkening M., Heitjans P. (2011): Li NMR Spectroscopy on Crystalline Li12Si7: Experimental Evidence for Aromaticity of the Planar Cyclopentadienyl-Analogous Si56-Rings, Angew. Chem. Int. Ed. 50, 12099.
DOI: 10.1002/anie.201105081

Kuhn A., Sreeraj P., Pöttgen R., Wiemhöfer H.-D., Wilkening M., Heitjans P. (2011): Li Ion Diffusion in the Anode Material Li12Si7: Ultrafast Quasi-1D Diffusion and Two Distinct Fast 3D Jump Processes Separately Revealed by 7Li NMR Relaxometry, J. Am. Chem. Soc. 113, 11018.
DOI: 10.1021/ja2020108

Epp V., Wilkening M. (2010): Fast Li diffusion in crystalline LiBH4 due to reduced dimensionality: Frequency-dependent NMR spectroscopy, Phys. Rev. B 82, 020301.
DOI: 10.1103/PhysRevB.82.020301

Ruprecht B., Billetter H., Ruschewitz U., Wilkening M. (2010): Ultra-slow Li ion dynamics in Li2C2 – On the similarities of results from 7Li spin-alignment echo NMR and impedance spectroscopy, J. Phys.: Condens. Matter 22, 245901.
DOI: 10.1088/0953-8984/22/24/245901