NMR relaxometry as a versatile tool to study Li ion dynamics in potential battery materials

2012 ◽  
Vol 42 ◽  
pp. 2-8 ◽  
Author(s):  
A. Kuhn ◽  
M. Kunze ◽  
P. Sreeraj ◽  
H.-D. Wiemhöfer ◽  
V. Thangadurai ◽  
...  
Keyword(s):  
Ion Dynamics ◽  
Battery Materials ◽  
Nmr Relaxometry ◽  
Versatile Tool ◽  
Li Ion

scholarly journals Solid-State NMR to Study Translational Li Ion Dynamics in Solids with Low-Dimensional Diffusion Pathways

2017 ◽  
Vol 231 (7-8) ◽  
Author(s):  
Kai Volgmann ◽  
Viktor Epp ◽  
Julia Langer ◽  
Bernhard Stanje ◽  
Jessica Heine ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Functional Materials ◽  
Model Systems ◽  
Polycrystalline Materials ◽  
Ion Dynamics ◽  
Relaxation Rates ◽  
Diffusion Parameters ◽  
Versatile Tool ◽  
Li Ion ◽  
Low Dimensional

AbstractFundamental research on lithium ion dynamics in solids is important to develop functional materials for, e.g. sensors or energy storage systems. In many cases a comprehensive understanding is only possible if experimental data are compared with predictions from diffusion models. Nuclear magnetic resonance (NMR), besides other techniques such as mass tracer or conductivity measurements, is known as a versatile tool to investigate ion dynamics. Among the various time-domain NMR techniques, NMR relaxometry, in particular, serves not only to measure diffusion parameters, such as jump rates and activation energies, it is also useful to collect information on the dimensionality of the underlying diffusion process. The latter is possible if both the temperature and, even more important, the frequency dependence of the diffusion-induced relaxation rates of actually polycrystalline materials is analyzed. Here we present some recent systematic relaxometry case studies using model systems that exhibit spatially restricted Li ion diffusion. Whenever possible we compare our results with data from other techniques as well as current relaxation models developed for 2D and 1D diffusion. As an example, 2D ionic motion has been verified for the hexagonal form of LiBH

scholarly journals Conductor–Insulator Interfaces in Solid Electrolytes: A Design Strategy to Enhance Li-Ion Dynamics in Nanoconfined LiBH4/Al2O3

2021 ◽  
Author(s):  
Roman Zettl ◽  
Katharina Hogrefe ◽  
Bernhard Gadermaier ◽  
Ilie Hanzu ◽  
Peter Ngene ◽  
...  
Keyword(s):  
Solid Electrolytes ◽  
Design Strategy ◽  
Ion Dynamics ◽  
Li Ion

scholarly journals Unveiling Interfacial Li-Ion Dynamics in Li7La3Zr2O12/PEO(LiTFSI) Composite Polymer-Ceramic Solid Electrolytes for All-Solid-State Lithium Batteries

2021 ◽  
Author(s):  
Mauricio R. Bonilla ◽  
Fabián A. García Daza ◽  
Pierre Ranque ◽  
Frederic Aguesse ◽  
Javier Carrasco ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Batteries ◽  
Solid Electrolytes ◽  
Ion Dynamics ◽  
Composite Polymer ◽  
Li Ion

scholarly journals Recent progress in theoretical and computational investigations of Li-ion battery materials and electrolytes

2015 ◽  
Vol 17 (7) ◽  
pp. 4799-4844 ◽  
Author(s):  
Mahesh Datt Bhatt ◽  
Colm O'Dwyer
Keyword(s):  
Recent Progress ◽  
Li Ion Battery ◽  
Battery Materials ◽  
Theoretical Investigations ◽  
Li Ion

Advancements and progress in computational and theoretical investigations of Li-ion battery materials and electrolytes are reviewed and assessed.

scholarly journals Short-range Li diffusion vs. long-range ionic conduction in nanocrystalline lithium peroxide Li2O2—the discharge product in lithium-air batteries

2014 ◽  
Vol 7 (8) ◽  
pp. 2739-2752 ◽  
Author(s):  
A. Dunst ◽  
V. Epp ◽  
I. Hanzu ◽  
S. A. Freunberger ◽  
M. Wilkening
Keyword(s):  
Short Range ◽  
Ionic Conduction ◽  
High Energy ◽  
Ion Dynamics ◽  
Nmr Relaxometry ◽  
Lithium Peroxide ◽  
Discharge Product ◽  
Energy Ball ◽  
Spin Locking ◽  
Lithium Air Batteries

Conductivity spectroscopy and 7Li spin-locking NMR relaxometry reveal enhanced ion dynamics in nanocrystalline Li2O2 prepared by high-energy ball milling.

scholarly journals An Analysis of Li Ion Secondary Battery Materials by Using Focused Ion Beam Micro-sampling Technique and Cold Field Emission Scanning Transmission Electron Microscope

2010 ◽  
Vol 16 (S2) ◽  
pp. 214-215
Author(s):  
T Tanigaki ◽  
K Ito ◽  
K Nakamura ◽  
Y Nagakubo ◽  
J Azuma ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Sampling Technique ◽  
Scanning Transmission Electron Microscope ◽  
Battery Materials ◽  
Secondary Battery ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Li Ion

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

scholarly journals A Fast Approach to Obtain Layered Transition-Metal Cathode Material for Rechargeable Batteries

Batteries ◽  
2022 ◽  
Vol 8 (1) ◽  
pp. 4
Author(s):  
Shofirul Sholikhatun Nisa ◽  
Mintarsih Rahmawati ◽  
Cornelius Satria Yudha ◽  
Hanida Nilasary ◽  
Hartoto Nursukatmo ◽  
...  
Keyword(s):  
Transition Metal ◽  
Cathode Material ◽  
Rechargeable Batteries ◽  
Material Behavior ◽  
Heating Process ◽  
Battery Materials ◽  
High Storage Capacity ◽  
Li Ion ◽  
Layered Transition Metal ◽  
High Storage

Li-ion batteries as a support for future transportation have the advantages of high storage capacity, a long life cycle, and the fact that they are less dangerous than current battery materials. Li-ion battery components, especially the cathode, are the intercalation places for lithium, which plays an important role in battery performance. This study aims to obtain the LiNixMnyCozO2 (NMC) cathode material using a simple flash coprecipitation method. As precipitation agents and pH regulators, oxalic acid and ammonia are widely available and inexpensive. The composition of the NMC mole ratio was varied, with values of 333, 424, 442, 523, 532, 622, and 811. As a comprehensive study of NMC, lithium transition-metal oxide (LMO, LCO, and LNO) is also provided. The crystal structure, functional groups, morphology, elemental composition and material behavior of the particles were all investigated during the heating process. The galvanostatic charge–discharge analysis was tested with cylindrical cells and using mesocarbon microbeads/graphite as the anode. Cells were tested at 2.7–4.25 V at 0.5 C. Based on the analysis results, NMC with a mole ratio of 622 showed the best characteristicd and electrochemical performance. After 100 cycles, the discharged capacity reaches 153.60 mAh/g with 70.9% capacity retention.

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