摘要
以二乙烯基苯(DVB)为交联剂、偶氮二异丁腈(AIBN)为引发剂、聚乙烯吡咯烷酮(PVP)为模版剂,通过自组装,制备聚苯乙烯微球。经过氧化和高温炭化转换成硬炭微球。考察了硬炭微球作为锂离子负极材料的电化学性能。结果表明硬炭微球的首次放电比容量为505 mA·h/g,40次循环后保持在304 mA·h/g。
Hard carbon microspheres were prepared from divinybenzene by a hydrothermal method,using AIBN as an initiator and PVP as template agent,and then peroxided and high temperature treatment.The transmission electron microscopy and scan electron microscopy observations show that the carbon microspheres about 1 μm nm in diameter were synthesized.The electrochemical results show that the discharge capacity is about 505 mA · h/g for the first cycle when used as lithium anode materials.The capacity retention is 304 mA · h/g when cycled for 40 times.
出处
《科学技术与工程》
北大核心
2014年第6期164-167,共4页
Science Technology and Engineering
基金
国家自然科学基金(51162006、51362009)
海南省自然科学基金(512112)资助
关键词
锂离子电池
负极材料
硬炭微球
自组装
lithium ion batteries
anode materials
hard carbon microspheres
lithium anode materials
molecular self-assembly
