天津工业大学学报2017，Vol.36Issue(4)：43-47,5.DOI:10.3969/j.issn.1671-024x.2017.04.009
膨胀碳微球/氧化锡复合材料的制备及其电化学性能
Preparation and electrochemical properties of expanded mesocarbon microbeads/SnO2 composite
摘要
Abstract
In order to improve the energy density of lithium-ion batteries, the tin/carbon composite was successfully prepared by low temperature oxidation-hydrothermal method. SEM, TEM, X-Ray diffraction (XRD) and galvanostatic charge-discharge experiments were used to characterize the tin/carbon composite. The results show that the synergistic effect of tin/carbon composite can enhance the capacity and cycle life of lithium-ion batteries. When the tin/carbon composite ratio is 1:1, the material exhibits the best cycle performance while maintaining a high capacity, after 220 cycles it delivers the reversible capacity of 550 mAh/g, and the capacity retention of 95% at the current density of 100 mA/g. The capacity is much larger than the graphite theoretical specific capacity of 372 mAh/g. It illustrates that the tin/carbon composite materials can effectively improve the energy density of lithium-ion batteries, and has a good cycle performance.关键词
水热法/膨胀碳微球/二氧化锡/复合材料/电化学性能/锂离子电池Key words
hydrothermal method/expanded mesocarbon microbeads/tin dioxide/composite/electrochemical properties/lithium ion battery分类
化学化工引用本文复制引用
武长城,章雄峰,时志强..膨胀碳微球/氧化锡复合材料的制备及其电化学性能[J].天津工业大学学报,2017,36(4):43-47,5.基金项目
国家自然科学基金资助项目(51603147) （51603147）
天津市自然科学基金资助项目(14RCHZGX00859,14JCQNJC07200,15ZCZDGX00270) （14RCHZGX00859,14JCQNJC07200,15ZCZDGX00270）
