Promoted conversion of polysulfides by MoO2 inlaid ordered mesoporous carbons towards high performance lithium-sulfur batteries

被引：34
作者：
Chen, Yawei [1 ]
Niu, Shuzhang [2 ]
Lv, Wei [1 ]
Zhang, Chen [3 ]
Yang, Quanhong [4 ]
机构：
[1] Tsinghua Univ, Grad Sch Shenzhen, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Shenzhen 518055, Peoples R China
[2] Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Peoples R China
[3] Tianjin Univ, Sch Marine Sci & Techol, Tianjin 300072, Peoples R China
[4] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
来源：
CHINESE CHEMICAL LETTERS | 2019年 / 30卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Lithium-sulfur batteries; Ordered mesoporous carbon; Electron transportation; Chemical adsorption; Catalytic effect; Polysulfides shuttling; SPHERES; TRANSFORMATION; GRAPHENE; CELLS;
D O I：
10.1016/j.cclet.2018.04.019
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
As polar materials, transition-metal oxides have shown great potentials to improve the adsorption of lithium polysulfides in lithium-sulfur batteries. Herein, a MoO2-ordered mesoporous carbon (M-OMC) hybrid was designed as the sulfur host, in which MoO2 is inlaid on the surface of ordered mesoporous carbons that can store active materials and provide fast electron transfer channel due to its ordered pore structure. The MoO2 can effectively prevent the migration of polysulfides through the chemical adsorption and promote the conversion of polysulfides towards Li-sulfur battery. (C) 2018 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：521 / 524
页数：4
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