人工晶体学报2017，Vol.46Issue(1)：8-12,5.
碳气凝胶修饰SnSb复合负极材料的制备及性能研究
Systhesis and Performance of SnSb Anode Materials Modified by Carbon Aerogels
摘要
Abstract
Carbon aerogels were synthesized by supercritical drying method, then a carbon aerogels/SnSb composite was successfully prepared from carbon aerogels modification of SnSb by a simple chemical reduction method. Both the structure and the morphology of the SnSb and CA/SnSb powders were characterized by X-ray diffraction and SEM. The samples were used as active anode materials for lithium-ion batteries, and their cycle performance was examined by constant current charge-discharge cycling. The results show that carbon aerogels exhibited nano porous three-dimensional network structure, and CA/SnSb is obtained when the SnSb was modified by carbon aerogels. The feature of CA/SnSb was carbon aerogels and SnSb particles mutually staggered distribution, and carbon aerogels particles were contained in the network backbone, then reunion of CA/SnSb was greatly improved. The first discharge capacity of CA/SnSb is measured as 1120. 2 mAh·g-1 and a large reversible capacity of 557. 3 mAh· g-1 is observed after 50 cycles, which is far higher than that of SnSb without modification by carbon aerogels. The capacity retention of CA/SnSb was improved due to the improving of reunion and alleviating volume expansion during the charge-discharge process by addition of carbon aerogels.关键词
碳气凝胶/SnSb/循环性能/锂离子电池/负极Key words
carbon aerogels/SnSb/cycling performance/lithium ion battery/anode分类
信息技术与安全科学引用本文复制引用
罗大为,陈佳明,李世伟,陈玉奇,李志军,李雪..碳气凝胶修饰SnSb复合负极材料的制备及性能研究[J].人工晶体学报,2017,46(1):8-12,5.基金项目
超材料电磁调制技术国家重点实验室项目(2011DQ782011) （2011DQ782011）
广东大学生科技创新培育专项资金(pdjh2016b0705) （pdjh2016b0705）
广东省高等学校优秀青年教师培养计划(YQ2013191) （YQ2013191）
深圳市科创委项目(JCYJ20160523113743114) （JCYJ20160523113743114）
