Constructing Binder- and Carbon Additive-Free Organosulfur Cathodes Based on Conducting Thiol-Polymers through Electropolymerization for Lithium-Sulfur Batteries

Jiaoyi Ning, Hongtao Yu, Shilin Mei, Yannik Schütze, Sebastian Risse, Nikolay Kardjilov, André Hilger, Ingo Manke, Annika Bande, Victor G. Ruiz, Joachim Dzubiella, Hong Meng*, Yan Lu*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

12 引用 (Scopus)

摘要

Herein, the concept of constructing binder- and carbon additive-free organosulfur cathode was proved based on thiol-containing conducting polymer poly(4-(thiophene-3-yl) benzenethiol) (PTBT). The PTBT featured the polythiophene-structure main chain as a highly conducting framework and the benzenethiol side chain to copolymerize with sulfur and form a crosslinked organosulfur polymer (namely S/PTBT). Meanwhile, it could be in-situ deposited on the current collector by electro-polymerization, making it a binder-free and free-standing cathode for Li-S batteries. The S/PTBT cathode exhibited a reversible capacity of around 870 mAh g−1 at 0.1 C and improved cycling performance compared to the physically mixed cathode (namely S&PTBT). This multifunction cathode eliminated the influence of the additives (carbon/binder), making it suitable to be applied as a model electrode for operando analysis. Operando X-ray imaging revealed the remarkable effect in the suppression of polysulfides shuttle via introducing covalent bonds, paving the way for the study of the intrinsic mechanisms in Li-S batteries.

源语言英语
文章编号e202200434
期刊ChemSusChem
15
14
DOI
出版状态已出版 - 21 7月 2022
已对外发布

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