Between Scylla and Charybdis: Balancing Among Structural Stability and Energy Density of Layered NCM Cathode Materials for Advanced Lithium-Ion Batteries
Тип публикации: Journal Article
Дата публикации: 2017-11-15
scimago Q1
wos Q3
БС1
SJR: 0.914
CiteScore: 6.2
Impact factor: 3.2
ISSN: 19327447, 19327455
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Physical and Theoretical Chemistry
General Energy
Краткое описание
Two major strategies are currently pursued to improve the energy density of lithium-ion batteries using LiNixCoyMnzO2 (NCM) cathode materials. One is to increase the fraction of redox active Ni (≥80%), which allows larger amounts of Li to be extracted at a given cutoff voltage (Umax). The other is to increase Umax, in particular for medium-Ni content NCM materials. However, the accompanying lattice changes ultimately lead to capacity fading in both cases. Here the structural changes occurring in Li1.02NixCoyMnzO2 (with x = 1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) during cycling operation in the voltage range between 3.0 and 4.6 V vs Li are quantified by means of operando X-ray diffraction combined with detailed Rietveld analysis. All samples show a large decrease in unit cell volume upon charging, ranging from 2.4% for NCM111 (33% Ni) to 8.0% for NCM851005 (85% Ni). To make a fair comparison of the structural stability of the different NCM materials, energy densities as a function of Umax are estimated and corre...
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de Biasi L. et al. Between Scylla and Charybdis: Balancing Among Structural Stability and Energy Density of Layered NCM Cathode Materials for Advanced Lithium-Ion Batteries // Journal of Physical Chemistry C. 2017. Vol. 121. No. 47. pp. 26163-26171.
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Kondrakov A., Geßwein H., Hartmann P., Janek J. Between Scylla and Charybdis: Balancing Among Structural Stability and Energy Density of Layered NCM Cathode Materials for Advanced Lithium-Ion Batteries // Journal of Physical Chemistry C. 2017. Vol. 121. No. 47. pp. 26163-26171.
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TY - JOUR
DO - 10.1021/acs.jpcc.7b06363
UR - https://doi.org/10.1021/acs.jpcc.7b06363
TI - Between Scylla and Charybdis: Balancing Among Structural Stability and Energy Density of Layered NCM Cathode Materials for Advanced Lithium-Ion Batteries
T2 - Journal of Physical Chemistry C
AU - Kondrakov, Aleksandr
AU - Geßwein, Holger
AU - Hartmann, Pascal
AU - Janek, Jürgen
PY - 2017
DA - 2017/11/15
PB - American Chemical Society (ACS)
SP - 26163-26171
IS - 47
VL - 121
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2017_de Biasi,
author = {Aleksandr Kondrakov and Holger Geßwein and Pascal Hartmann and Jürgen Janek},
title = {Between Scylla and Charybdis: Balancing Among Structural Stability and Energy Density of Layered NCM Cathode Materials for Advanced Lithium-Ion Batteries},
journal = {Journal of Physical Chemistry C},
year = {2017},
volume = {121},
publisher = {American Chemical Society (ACS)},
month = {nov},
url = {https://doi.org/10.1021/acs.jpcc.7b06363},
number = {47},
pages = {26163--26171},
doi = {10.1021/acs.jpcc.7b06363}
}
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de Biasi, Lea, et al. “Between Scylla and Charybdis: Balancing Among Structural Stability and Energy Density of Layered NCM Cathode Materials for Advanced Lithium-Ion Batteries.” Journal of Physical Chemistry C, vol. 121, no. 47, Nov. 2017, pp. 26163-26171. https://doi.org/10.1021/acs.jpcc.7b06363.