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

9 Citations (Scopus)
11 Downloads (Pure)

Abstract

The 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 accompanied by spontaneous atomic migration and volume variation during the charge/discharge cycle leads to electrode disintegration and performance degradation, therefore severely restricting the application of conventional conversion-type electrodes. Herein, latticed-confined conversion chemistry is proposed, where the “intercalation-like” redox behavior 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 by the inert lattice framework, thus enabling an ultra-high initial Coulombic efficiency of 92.5% and a long cycling lifespan over a thousand cycles after the quasistatic charge–discharge cycle. This lattice-confined conversion chemistry unfolds a ubiquitous insight into the localized redox reaction and sheds light on developing high-performance electrodes toward next-generation high-energy rechargeable batteries.
Original languageEnglish
Article number2204912
Number of pages9
JournalSmall
Volume18
Issue number48
Early online date20 Oct 2022
DOIs
Publication statusPublished - 1 Dec 2022

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