Promoting Surface Electric Conductivity for High‐Rate LiCoO2

• DOI: 10.1002/ange.202218595
• Publication Date: 2023-01-02T14:30:51Z
• Authors: Shenyang Xu; Xinghua Tan; Wangyang Ding; Wenju Ren; Qi Zhao; Weiyuan Huang; Jiajie Liu; Rui Qi; Yongxin Zhang; Jiachao Yang; Changjian Zuo; Haocheng Ji; Hengyu Ren; Bo Cao; Haoyu Xue; Zhihai Gao; Haocong Yi; Wenguang Zhao; Yinguo Xiao; Qinghe Zhao; Mingjian Zhang; Feng Pan
• Keywords: 7. Clean energy; 01 natural sciences; 0104 chemical sciences

Abstract The cathode materials work as the host framework for both Li + diffusion and electron transport in Li‐ion batteries. property is always research focus, while less studied. Herein, we propose a unique strategy to elevate rate performance through promoting surface electric conductivity. Specifically, disordered rock‐salt phase was coherently constructed at of LiCoO 2 , conductivity by over one magnitude. It increased effective voltage ( V eff ) imposed bulk, thus driving more extraction/insertion making exhibit superior capability (154 mAh g −1 10 C), excellent cycling (93 % after 1000 cycles C). universality this confirmed another design simulation. Our findings provide new angle developing high‐rate tuning property.