CoSe-catalyzed growth of graphene sheath to construct CNF@graphene-CoSe cable/sheath heterostructure for high-performance Lithium-Sulfur batteries

被引：19

作者：

Cao, Zhaoxia ^{[1
,2
]}

Wang, Yahan ^{[1
,2
]}

Guo, Jian ^{[1
,2
]}

Jia, Jingyi ^{[1
,2
]}

Zhang, Zhennan ^{[1
,2
]}

Cui, Yuantao ^{[1
,2
]}

Yin, Yanhong ^{[1
,2
]}

Yang, Mingguo ^{[1
]}

Yang, Shuting ^{[1
,2
]}

机构：

[1] Henan Normal Univ, Sch Chem & Chem Engn, Natl & Local Engn Lab Mot Power & Key Mat, Xinxiang 453007, Peoples R China

[2] Henan Normal Univ, Henan Prov Green Mot Power & Key Mat, Collaborat Innovat Ctr, Xinxiang 453007, Henan, Peoples R China

来源：

CARBON | 2023年 / 204卷

基金：

中国国家自然科学基金;

关键词：

Self-boosting catalytic growth; Cable/sheath; Heterostructure; Lithium-Sulfur batteries; POLYSULFIDES; NANOFIBERS; INTERLAYER; CONVERSION; NANOSHEETS; BARRIER;

D O I：

10.1016/j.carbon.2022.11.082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Advanced hierarchical hybrid nanostructures of polar, conductive and catalytic chemical traps/carbon with rationally tailored components, structures, and chemistries are important in determining the performance of lithium-sulfur (Li-S) batteries. Herein we propose a facile strategy to prepare 3D-structured CNF@graphene-CoSe (CNF@G(L)-CoSe) cable/sheath heterostructure with the in-situ formed CoSe as a catalyst for graphene-like carbon growth and Se as a catalyst promoter. The architecture integrates high electrical conductivity, effective ion transport, notable polysulfide entrapment, and polysulfide redox kinetics, availing lithium/sulfur conversion when applied as an interlayer in a Li-S battery. As expected, the battery delivered a low decay of 0.053% per cycle over 700 cycles at 1 C. The capacity even remained 649.4 and 524.5 mA h g(-1) at 4 and 6 C, respectively. Furthermore, an areal capacity of about 3 mA h cm(-2) at 0.1 C after long-term tests can still maintain with sulfur loading of 4.5 mg cm(-2).

引用

页码：102 / 111

页数：10

共 60 条

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