NMR and Impedance Spectroscopy Studies on Lithium Ion Diffusion in Microcrystalline γ-LiAlO2
-
Elena Witt
,
Suliman Nakhal
Abstract
In this work nuclear magnetic resonance (NMR) and impedance spectroscopy (IS) studies on Li ion dynamics in microcrystalline γ-LiAlO2 are presented. The sample was prepared by solid state synthesis between Li2CO3 and Al2O3 in air, followed by a quenching procedure. The presence of phase-pure γ-LiAlO2 was confirmed by X-ray powder diffraction including Rietveld refinement. Further structural characterization was done with 6Li, 7Li and 27Al NMR. Several NMR techniques such as spin-lattice relaxation measurements, motional narrowing experiments, as well as spin-alignment echo were employed for the investigation of Li ion diffusion. The measurements were carried out at high temperatures (up to 970 K) in order to access the regime of Li ion motion being very slow. The dc conductivities measured by IS in the temperature range from 680 K to 870 K were converted to diffusion coefficients being compatible with those obtained by NMR.
Acknowledgement
Financial support from the Deutsche Forschungsgemeinschaft (DFG) in the framework of the Research Unit FOR 1277 (molife) as well as GEENI (“Graduiertenkolleg Energiespeicher und Elektromobilität Niedersachsen”) is gratefully acknowledged.
©2015 Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Frontmatter
- Preface
- Lithium Ions in Solids – Between Basics and Better Batteries
- 3D Li Diffusion in c-LixTiS2 (x = 0.69 and 0.75): A Theoretical Study
- The High-Temperature Transformation from 1T- to 3R-LixTiS2 (x = 0.7, 0.9) as Observed in situ with Neutron Powder Diffraction
- Kinetics of Lithium Intercalation in TiX2 Single Crystals (X = S, Se, Te) under Hydrostatic Pressure
- A Novel Cell for Studying Ionic Transport in Powders During Compaction and Its Application to Lithium Silicate Glass Powder
- NMR and Impedance Spectroscopy Studies on Lithium Ion Diffusion in Microcrystalline γ-LiAlO2
- Lithium Diffusion in Ion-Beam Sputtered Amorphous LiAlO2
- Lattice Vibrations to Identify the Li/Na Ratio in LixNa2−xTi6O13 (x = 0…2)
- Li Ion Dynamics in Nanocrystalline and Structurally Disordered Li2TiO3
- A Secondary Ion Mass Spectrometry Study on the Mechanisms of Amorphous Silicon Electrode Lithiation in Li-Ion Batteries
- Surface and Interface Analysis of LiCoO2 and LiPON Thin Films by Photoemission: Implications for Li-Ion Batteries
- Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries
- Application of WSe2 Nanoparticles Synthesized by Chemical Vapor Condensation Method for Li-Ion Battery Anodes
- Mixed Ionic–Electronic Conducting Li4Ti5O12 as Anode Material for Lithium Ion Batteries with Enhanced Rate Capability – Impact of Oxygen Non-Stoichiometry and Aliovalent Mg2+-Doping Studied by Electron Paramagnetic Resonance
- Assessment of Surface Heterogeneity: a Route to Correlate and Quantify the 1st Cycle Irreversible Capacity Caused by SEI Formation to the Various Surfaces of Graphite Anodes for Lithium Ion Cells
Articles in the same Issue
- Frontmatter
- Preface
- Lithium Ions in Solids – Between Basics and Better Batteries
- 3D Li Diffusion in c-LixTiS2 (x = 0.69 and 0.75): A Theoretical Study
- The High-Temperature Transformation from 1T- to 3R-LixTiS2 (x = 0.7, 0.9) as Observed in situ with Neutron Powder Diffraction
- Kinetics of Lithium Intercalation in TiX2 Single Crystals (X = S, Se, Te) under Hydrostatic Pressure
- A Novel Cell for Studying Ionic Transport in Powders During Compaction and Its Application to Lithium Silicate Glass Powder
- NMR and Impedance Spectroscopy Studies on Lithium Ion Diffusion in Microcrystalline γ-LiAlO2
- Lithium Diffusion in Ion-Beam Sputtered Amorphous LiAlO2
- Lattice Vibrations to Identify the Li/Na Ratio in LixNa2−xTi6O13 (x = 0…2)
- Li Ion Dynamics in Nanocrystalline and Structurally Disordered Li2TiO3
- A Secondary Ion Mass Spectrometry Study on the Mechanisms of Amorphous Silicon Electrode Lithiation in Li-Ion Batteries
- Surface and Interface Analysis of LiCoO2 and LiPON Thin Films by Photoemission: Implications for Li-Ion Batteries
- Synthesis and Electrochemical Behavior of Nanostructured Copper Particles on Graphite for Application in Lithium Ion Batteries
- Application of WSe2 Nanoparticles Synthesized by Chemical Vapor Condensation Method for Li-Ion Battery Anodes
- Mixed Ionic–Electronic Conducting Li4Ti5O12 as Anode Material for Lithium Ion Batteries with Enhanced Rate Capability – Impact of Oxygen Non-Stoichiometry and Aliovalent Mg2+-Doping Studied by Electron Paramagnetic Resonance
- Assessment of Surface Heterogeneity: a Route to Correlate and Quantify the 1st Cycle Irreversible Capacity Caused by SEI Formation to the Various Surfaces of Graphite Anodes for Lithium Ion Cells
