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Codependent failure mechanisms between cathode and anode in solid state lithium metal batteries: mediated by uneven ion flux.
- Source :
-
Science Bulletin . Apr2023, Vol. 68 Issue 8, p813-825. 13p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] An in-depth understanding of the degradation mechanisms is a prerequisite for developing the next-generation all solid-state lithium metal battery (ASSLMB) technology. Herein, synchrotron X-ray computed tomography (SXCT) together with other probing tools and simulation method were employed to rediscover the decaying mechanisms of LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM)|Li 6 PS 5 Cl (LPSCl)|Li ASSLMB. It reveals that the detachment and isolation of NCM particles cause the current focusing on the remaining active regions of cathode. The extent of Li stripping and the likelihood of Li+ plating into LPSCl facing the active NCM particles becomes higher. Besides, the homogeneity of Li stripping/plating is improved by homogenizing the electrochemical reactions at the cathode side by LiZr 2 (PO 4) 3 (LZP) coating. These results suggest a codependent failure mechanism between cathode and anode that is mediated by uneven Li ion flux. This work contributes to a holistic understanding of the degradation mechanisms in ASSLMBs and opens new opportunities for their further optimization and development. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20959273
- Volume :
- 68
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 163515944
- Full Text :
- https://doi.org/10.1016/j.scib.2023.03.021