用于高性能锂硫电池隔膜的a-MEGO@g-C3N4复合材料

doi:10.3969/j.issn.0253-2778.2018.03.001

中国科学技术大学学报 ›› 2018, Vol. 48 ›› Issue (3): 175-183.DOI: 10.3969/j.issn.0253-2778.2018.03.001

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用于高性能锂硫电池隔膜的a-MEGO@g-C3N4复合材料

杜娟，金松，杜真真，季恒星

中国科学技术大学材料科学与工程系，中国科学院能量转换材料重点实验室，能源材料化学协同创新中心，安徽合肥 230026）

收稿日期:2017-04-05 修回日期:2017-05-15 出版日期:2018-03-31 发布日期:2018-03-31

Nitrogen-rich a-MEGO@g-C3N4 coating on separator for advanced Li-S battery

DU Juan, JIN Song, DU Zhenzhen, JI Hengxing

Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, Collaborative Innovation Center of Chemistry for Energy Materials, University of Science and Technology of China, Hefei 230026, China

Received:2017-04-05 Revised:2017-05-15 Online:2018-03-31 Published:2018-03-31
Contact: JI Hengxing
About author:DU Juan, female, born in 1993, master candidate. Research field: nitrogen-rich carbon-based
materials. E-mail: dj2014@mail.ustc.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(21373197).

摘要/Abstract

摘要： 由于具有高能量密度和环境友好性，锂硫电池成为备受关注的下一代电化学储能系统，然而硫和硫化锂的低电导率和多硫化锂的穿梭效应严重影响锂硫电池的实际比容量和循环性能.本研究制备出了具有高

关键词: 隔膜, 氮化碳, 化学吸附, 锂硫电池

Abstract: Lithium-sulfur batteries are widely seen as a promising next-generation energy storage system owing to their ultrahigh energy density and environmental benignity, yet the low electrical conductivity of sulfur and the shuttle effect of dissolved polysulfides result in poor cycling performance. An a-MEGO@g-C3N4composite coated on polypropylene separator with high nitrogen content (atomic percent 20.08%) and specific surface area (1000 m2·g-1) was developed to inhibit polysulfide shuttling. The prepared lithium-sulfur battery with the a-MEGO@g-C3N4 coated separator delivered a specific capacity

Key words: separator, g-C3N4, chemical adsorption, Li-S battery

中图分类号:

杜娟，金松，杜真真，季恒星. 用于高性能锂硫电池隔膜的a-MEGO@g-C3N4复合材料[J]. 中国科学技术大学学报, 2018, 48(3): 175-183.

DU Juan, JIN Song, DU Zhenzhen, JI Hengxing. Nitrogen-rich a-MEGO@g-C3N4 coating on separator for advanced Li-S battery[J]. Journal of University of Science and Technology of China, 2018, 48(3): 175-183.

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用于高性能锂硫电池隔膜的a-MEGO@g-C3N4复合材料

Nitrogen-rich a-MEGO@g-C3N4 coating on separator for advanced Li-S battery

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