Graphene oxide-wrapped sulfur/acetylene black for high-performance lithium-sulfur batteries

被引：2
|
作者：
Zou, Youlan [1 ,2 ]
Long, Bo [1 ]
Li, Zhaoyang [1 ]
Li, Xiaoyu [1 ]
Zhang, Zhehao [1 ]
机构：
[1] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China
[2] China Univ Geosci, Engn Res Ctr Nanogeo Mat, Minist Educ, Wuhan 430074, Peoples R China
来源：
IONICS | 2020年 / 26卷 / 10期
关键词：
Lithium-sulfur battery; Graphene oxide; Multilayered sandwich structure; Rate stability; POROUS CARBON; STRATEGY; CATHODES; STORAGE; FILMS;
D O I：
10.1007/s11581-020-03645-y
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：
GO@S/C composite with a multilayered sandwich structure was prepared by a moderate sol-gel method, which was based on porous acetylene black (C) loading sulfur and insertion into multilayered graphene oxide (GO). When evaluated as a cathode for lithium-sulfur batteries (LSBs), it shows an improved capacity of 1433 mAh/g at 0.1 C and 433 mAh/g at 5 C with almost 100% coulombic efficiency for comparison with pure sulfur electrode. It also effectively hinders the expansion of sulfur, the dissolution of polysulfides, and the shuttle effect due to the adsorption and local confinement of polysulfide by porous C and GO.
引用
收藏
页码：4929 / 4935
页数：7
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