电源技术2018，Vol.42Issue(2)：208-211,257,5.
锂硫电池硫-碳正极材料的制备及电化学性能
Preparation and electrochemical performance of carbon/sulfur cathode for lithium-sulfur batteries
摘要
Abstract
The microporous carbon spheres with less than 0.6 nm pores were synthesized by carbonizing resin microspheres.And the microporous carbon spheres/smaller sulfur molecules composites (A-MRF/S) were prepared by heat treatment method.SEM,EDS and XRD measurements were conducted.The results indicate that the sulfur in the form of smaller sulfur molecules (S2-4) exists in microporous carbon spheres.The charge-discharge tests show that the reversible specific capacity of A-MRF/S is 847.1 mAh/g at first cycle,the specific capacity retains 630.5 mAh/g after 100 cycles,and the coulombic efficiency reaches almost 100％ in each cycle at 0.2 C.Moreover,the discharge specific capacity is 539.7 mAh/g at 2 C.The excellent cycle stability,coulombic efficiency and rate performance of A-MRF/S are attributed to the solid-solid electrochemical reaction process of smaller sulfur molecules.关键词
锂硫电池/小硫分子/微孔碳球/正极Key words
lithium-sulfur battery/smaller sulfur molecules/microporous carbon spheres/cathode分类
信息技术与安全科学引用本文复制引用
钟彩云,林海飞,王芳..锂硫电池硫-碳正极材料的制备及电化学性能[J].电源技术,2018,42(2):208-211,257,5.基金项目
深圳大学化学与环境工程学院学生课外学术科技创新项目及实验室开放基金重点项目 （）
