@article{Chen2025, 
author = {Yipei Chen and Yuchen Wu and Zhefei Sun and Guiyang Gao and Xinchao Hu and Yinggan Zhang and Qing Luo and Laisen Wang and Dong-Liang Peng and Ming-Sheng Wang and Jie Lin},
title = {Unraveling enhanced conversion reversibility of regulated Cu4SnS4 composites for superior lithium storage},
year = {2025},
journal = {Nano Research Energy},
volume = {4},
pages = {e9120192},
keywords = {lithium-ion battery, in-situ characterization, copper tin sulfide, composite regulation, conversion reversibility},
url = {https://www.sciopen.com/article/10.26599/NRE.2025.9120192},
doi = {10.26599/NRE.2025.9120192},
abstract = {High-capacity electrodes based on multiple reaction mechanisms are promising for lithium storage, but the inferior conversion reversibility limits the practical application. Herein, the Cu-Sn-S (CTS) electrodes based on conversion-alloying mechanisms are synthesized with abundant Cu4SnS4 (75.98%) and beneficial Cu7.2S4 phases. The regulated composition and core-shell nanostructures can effectively mitigate the volume change and improve the lithiation performance of CTS upon cycling. Moreover, the composition evolution of CTS is comprehensively tracked via various in-situ tests, revealing that the abundant Cu4SnS4 and the formed Cu3Sn after lithiation are the key factors to induce uniform phase distribution and enhanced conversion reversibility, which is confirmed by theoretical calculations. This work sheds light on the reaction process of electrodes based on multiple lithiation mechanisms, which could inspire the development of analogous energy materials.}
}