Roles of Slab-Gliding-Induced Surface Nano-Steps in High-Voltage Instability of LiCoO 2

Journal of the American Chemical Society 2026

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Authors: Wenguang Zhao, Zijian Li, Tongsheng Deng, Hengyu Ren, Haocong Yi, Xiaohu Wang, Feng Jin, Cong Lin, Zhihao Shen, Shiming Chen, Chunyu Xu, Zijin Xu
+7 more Zhefeng Chen, Dong Zhou, Jun Wang, Bin Fei, Shunning Li, Feng Pan, He Zhao
DOI: 10.1021/jacs.5c20351
Cited by: 1
References: 36

Abstract

-blocking layer, ultimately causing a rapid capacity decay. We further demonstrate that even if a rock-salt (RS) phase forms electrochemically in situ (e-RS) on the LCO surface, it fails to suppress the lattice-O loss due to the emergence of surface nanosteps. In contrast, a prefabricated RS layer (p-RS) with enhanced mechanical robustness effectively inhibits the formation of such nanosteps, thereby intrinsically suppressing lattice-O loss during cycling. This work identifies slab-gliding-induced surface nanosteps as a key structural trigger for lattice-O loss and demonstrates that prefabricated RS coatings offer an effective route to stabilize high-voltage LCO cathodes.

Fields of Study & Subjects

Advancements in Battery Materials Advanced Battery Materials and Technologies Electrocatalysts for Energy Conversion

Publication details

Journal / source
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Volume
148
Issue
15
Pages
15672–15682
Publication date
6 April 2026
Language
EN