Latticed-Confined Conversion Chemistry of Battery Electrode

Libin Fang, Haosheng Li, Ben Bin Xu, Jie Ma, Hongge Pan*, Qinggang He, Tianlong Zheng, Wenbin Ni, Yue Lin, Yangmu Li, Yue Cao, Chengjun Sun, Mi Yan*, Wenping Sun, Yinzhu Jiang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Electrochemical conversion reaction, usually featured by multiple redox processes and high specific capacity, holds great promise in developing high-energy rechargeable battery technologies. However, the complete structural change accompanies by spontaneous atomic migration and volume variation during the charge/discharge cycle leads to electrode disintegration and performance degradation, therefore severely restrict the application of conventional conversion-type electrodes. Herein, we propose latticed-confined conversion chemistry, where the “intercalation-like” redox behaviour is realized on the electrode with a “conversion-like” high capacity. By delicately formulating the high-entropy compounds, the pristine crystal structure can be preserved well by the inert lattice framework, thus enabling an ultra-high initial Coulombic efficiency of 92.5% and a long cycling lifespan over thousand cycles after quasistatic charge-discharge cycle. This lattice-confined conversion chemistry unfolds ubiquitous insights into the localized redox reaction and sheds new lights on developing high-performance electrodes toward next-generation high-energy rechargeable batteries.
Original languageEnglish
Article number2204912
JournalSmall
Early online date20 Oct 2022
DOIs
Publication statusE-pub ahead of print - 20 Oct 2022

Fingerprint

Dive into the research topics of 'Latticed-Confined Conversion Chemistry of Battery Electrode'. Together they form a unique fingerprint.

Cite this