Construction of Fe2O3/rGO sulfur-carriers and electrochemical performance of sulfur composite cathode

被引：0

作者：

Dong W. ^{[1
,2
]}

Zhao M.-N. ^{[1
]}

Liang B. ^{[2
]}

Yang F. ^{[1
]}

Shen D. ^{[1
]}

Meng L.-Q. ^{[1
]}

Li M.-W. ^{[1
]}

Liu F.-X. ^{[1
]}

Yang S.-B. ^{[1
,3
]}

Dong L. ^{[4
]}

机构：

[1] College of Material Science and Engineering, Liaoning Technical University, Fuxin

[2] School of Mechanics and Engineering, Liaoning Technical University, Fuxin

[3] Institute of Mineral Material and Clean Transformation, Liaoning Technical University, Fuxin

[4] Dong Fang New Energy Corporation, State Power Investment Company, Shijiazhuang

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2022年 / 32卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Cathode material; Fe[!sub]2[!/sub]O[!sub]3[!/sub; Graphene; Lithium-sulfur battery; Sulfur-carrier;

D O I：

10.11817/j.ysxb.1004.0609.2021-39678

中图分类号：

学科分类号：

摘要：

The shuttle effect and electrical conductivity of lithium-sulfur battery cathode materials are important factors that limit the development and application of lithium-sulfur batteries. In response to the above problems, the Fe2O3/rGO sulfur-carrier was prepared by hydrothermal method, and rGO and Fe2O3@rGO sulfur-carriers were prepared for comparison. The phase composition, microstructure and electrochemical properties of the materials were characterized by means of X-ray diffractometer, scanning electron microscope, specific surface area analyzer and electrochemical performance test. The results show that the size of Fe2O3 particles in Fe2O3/rGO composites prepared by in-situ method is significantly lower than that of Fe2O3@rGO prepared by mechanical mixing method. The formation of nano Fe2O3 hinders the aggregation of rGO layers, increases the interlayer spacing and obtains larger pore size (8 nm), pore volume and specific surface area. The prepared cathode material of Fe2O3/rGO/S has better cycle stability at a current density of 0.2C. After 100 cycles, the remaining capacity is 782 mA∙h/g. The improvement of electrochemical performance is attributed to the large pore volume and good impedance performance of Fe2O3/rGO. © 2022, China Science Publishing & Media Ltd. All right reserved.

引用

页码：2019 / 2026

页数：7

共 27 条

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