Reversible Solid–Solid Conversion of Sulfurized Polyacrylonitrile Cathodes in Lithium–Sulfur Batteries by Weakly Solvating Ether Electrolytes,Angewandte Chemie International Edition

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Reversible Solid–Solid Conversion of Sulfurized Polyacrylonitrile Cathodes in Lithium–Sulfur Batteries by Weakly Solvating Ether Electrolytes
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2023-09-05 , DOI: 10.1002/anie.202310761
Tao Ma _{1,

2} , Youxuan Ni _{1,

2} , Diantao Li _{1,

2} , Zhengtai Zha _{1,

2} , Song Jin ₃ , Weijia Zhang _{1,

2} , Liqun Jia _{1,

2} , Qiong Sun _{1,

2} , Weiwei Xie _{1,

2} , Zhanliang Tao _{1,

2} , Jun Chen _{1,

2}

Affiliation

A stable cathode electrolyte interphase (CEI) was formed on the sulfurized polyacrylonitrile (SPAN) cathode by utilizing a weakly solvating ether electrolyte with an anion–rich solvated structure. This CEI layer effectively impedes the dissolution of polysulfides into the electrolyte, thereby inducing a “solid–solid” direct conversion mechanism. Consequently, the SPAN cathode demonstrates excellent cycle reversibility and achieves an extended lifespan.

中文翻译：

弱溶剂化醚电解质实现锂硫电池中硫化聚丙烯腈阴极的可逆固-固转化

利用具有富阴离子溶剂化结构的弱溶剂化醚电解质，在硫化聚丙烯腈（SPAN）阴极上形成稳定的阴极电解质中间相（CEI）。该CEI层有效地阻止多硫化物溶解到电解质中，从而诱导“固-固”直接转化机制。因此，SPAN正极表现出优异的循环可逆性并实现了更长的使用寿命。

更新日期：2023-09-05

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