Journal of Physical Chemistry Letters, volume 11, issue 24, pages 10511-10518

Lithium Planar Deposition vs Whisker Growth: Crucial Role of Surface Diffusion

Publication typeJournal Article
Publication date2020-12-07
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor5.7
ISSN19487185
Physical and Theoretical Chemistry
General Materials Science
Abstract
Lithium plating-one of the critical processes in the desired high-energy lithium metal batteries-is accompanied by lithium whisker growth, which causes several problems that prevent the employment of metallic lithium anodes in rechargeable systems. They include low coulombic efficiency, electrolyte consumption, and the risk of short circuits, which can lead to thermal runaway of the battery. In recent years several strategies were suggested to mitigate whisker growth. The mechanism of this process, however, still lacks understanding. Here, we reveal the importance of surface diffusion along grain boundaries in solid lithium. We show that, at first, the plating of lithium onto a lithium substrate is possible as bulk crystal growth with a planar crystallization front for the Li grains with oblique (nonperpendicular to the surface) grain boundaries. Further, the developed compressive stress makes lithium diffusion to the grain base unfavorable, and new grains nucleate at the surface. The latter are the cause of the whisker growth from their roots. These findings indicate that the control of grain-boundary diffusion and grain size and structure paves the way to overcome the nonuniform morphology of plated lithium.

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Rulev A. A. et al. Lithium Planar Deposition vs Whisker Growth: Crucial Role of Surface Diffusion // Journal of Physical Chemistry Letters. 2020. Vol. 11. No. 24. pp. 10511-10518.
GOST all authors (up to 50) Copy
Rulev A. A., Kondratyeva Y. O., Yashina L. V., Itkis D. Lithium Planar Deposition vs Whisker Growth: Crucial Role of Surface Diffusion // Journal of Physical Chemistry Letters. 2020. Vol. 11. No. 24. pp. 10511-10518.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/acs.jpclett.0c02674
UR - https://doi.org/10.1021%2Facs.jpclett.0c02674
TI - Lithium Planar Deposition vs Whisker Growth: Crucial Role of Surface Diffusion
T2 - Journal of Physical Chemistry Letters
AU - Kondratyeva, Yevgeniya O
AU - Rulev, Alexey A
AU - Yashina, Lada V.
AU - Itkis, Daniil
PY - 2020
DA - 2020/12/07 00:00:00
PB - American Chemical Society (ACS)
SP - 10511-10518
IS - 24
VL - 11
SN - 1948-7185
ER -
BibTex |
Cite this
BibTex Copy
@article{2020_Rulev,
author = {Yevgeniya O Kondratyeva and Alexey A Rulev and Lada V. Yashina and Daniil Itkis},
title = {Lithium Planar Deposition vs Whisker Growth: Crucial Role of Surface Diffusion},
journal = {Journal of Physical Chemistry Letters},
year = {2020},
volume = {11},
publisher = {American Chemical Society (ACS)},
month = {dec},
url = {https://doi.org/10.1021%2Facs.jpclett.0c02674},
number = {24},
pages = {10511--10518},
doi = {10.1021/acs.jpclett.0c02674}
}
MLA
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MLA Copy
Rulev, Alexey A., et al. “Lithium Planar Deposition vs Whisker Growth: Crucial Role of Surface Diffusion.” Journal of Physical Chemistry Letters, vol. 11, no. 24, Dec. 2020, pp. 10511-10518. https://doi.org/10.1021%2Facs.jpclett.0c02674.
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