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505mA·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.