Charge-Transfer-Induced Lattice Collapse in Ni-Rich NCM Cathode Materials during Delithiation
Тип публикации: Journal Article
Дата публикации: 2017-10-27
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
Ni-rich LiNixCoyMnzO2 (NCM) cathode materials have great potential for application in next-generation lithium-ion batteries owing to their high specific capacity. However, they are subjected to severe structural changes upon (de)lithiation, which adversely affects the cycling stability. Herein, we investigate changes in crystal and electronic structure of NCM811 (80% Ni) at high states of charge by a combination of operando X-ray diffraction (XRD), operando hard X-ray absorption spectroscopy (hXAS), ex situ soft X-ray absorption spectroscopy (sXAS), and density functional theory (DFT) calculations and correlate the results with data from galvanostatic cycling in coin cells. XRD reveals a large decrease in unit cell volume from 101.38(1) to 94.26(2) A3 due to collapse of the interlayer spacing when x(Li) < 0.5 (decrease in c-axis from 14.469(1) A at x(Li) = 0.6 to 13.732(2) A at x(Li) = 0.25). hXAS shows that the shrinkage of the transition metal–oxygen layer mainly originates from nickel oxidation. sXAS, ...
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Kondrakov A. et al. Charge-Transfer-Induced Lattice Collapse in Ni-Rich NCM Cathode Materials during Delithiation // Journal of Physical Chemistry C. 2017. Vol. 121. No. 44. pp. 24381-24388.
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Kondrakov A., Geßwein H., Galdina K., Filatova E. A., Schumacher G., Hartmann P., Janek J. Charge-Transfer-Induced Lattice Collapse in Ni-Rich NCM Cathode Materials during Delithiation // Journal of Physical Chemistry C. 2017. Vol. 121. No. 44. pp. 24381-24388.
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TY - JOUR
DO - 10.1021/acs.jpcc.7b06598
UR - https://doi.org/10.1021/acs.jpcc.7b06598
TI - Charge-Transfer-Induced Lattice Collapse in Ni-Rich NCM Cathode Materials during Delithiation
T2 - Journal of Physical Chemistry C
AU - Kondrakov, Aleksandr
AU - Geßwein, Holger
AU - Galdina, Kristina
AU - Filatova, Elena A.
AU - Schumacher, Gerhard
AU - Hartmann, Pascal
AU - Janek, Jürgen
PY - 2017
DA - 2017/10/27
PB - American Chemical Society (ACS)
SP - 24381-24388
IS - 44
VL - 121
SN - 1932-7447
SN - 1932-7455
ER -
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@article{2017_Kondrakov,
author = {Aleksandr Kondrakov and Holger Geßwein and Kristina Galdina and Elena A. Filatova and Gerhard Schumacher and Pascal Hartmann and Jürgen Janek},
title = {Charge-Transfer-Induced Lattice Collapse in Ni-Rich NCM Cathode Materials during Delithiation},
journal = {Journal of Physical Chemistry C},
year = {2017},
volume = {121},
publisher = {American Chemical Society (ACS)},
month = {oct},
url = {https://doi.org/10.1021/acs.jpcc.7b06598},
number = {44},
pages = {24381--24388},
doi = {10.1021/acs.jpcc.7b06598}
}
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Kondrakov, Aleksandr, et al. “Charge-Transfer-Induced Lattice Collapse in Ni-Rich NCM Cathode Materials during Delithiation.” Journal of Physical Chemistry C, vol. 121, no. 44, Oct. 2017, pp. 24381-24388. https://doi.org/10.1021/acs.jpcc.7b06598.