【作者】 李宝华； 李开喜； 吕春祥； 吴东； 凌立成； 徐春明； 王仁安；

【Author】 LI Bao-hua;LI Kai-xi;LU Chun-xiang;WU Dong;LING Li-cheng;XU Chun-ming;WANG Ren-an State Key Laboratory of Coal Conversion, Institute of Coal Chemistry Chinese Academy of Sciences,Taiyuan, 030001, China State Key Laboratory of Heavy Oil Processing in the University of Petroleum, Beijing, 102200, China

【机构】 中国科学院山西煤炭化学研究所煤转化国家重点实验室； 石油大学重质油加工国家重点实验室；

【摘要】 通过浸渍的方法在天然鳞片石墨的表面包覆上一层酚醛树脂,然后在N₂保护下于600～1000℃炭化1h制得改性石墨。恒电流充放电技术研究了所得改性石墨的充放电性能。结果表明包覆在石墨表面具有无定形结构的酚醛树脂炭能够有效阻止石墨在充放电过程中发生层状剥落,从而提高了石墨的循环稳定性。更多还原

【Abstract】 Natural graphite was coated with phenol-formadehyde resin solution. The coated graphite was furthercarbonized from 600℃ to 1000℃ for 1h under N₂ after removing solvent of methane, to obtain a modified graphite.The constant-current charge-discharge properties of modified graphites were investigated. The results showed that thephenol-formadehyde resin carbon with disordered structure on the surface of graphite could successfully protect thegraphite from exfoliation to improve its cyclic performances. showing better charge-discharge performances than thatof the raw graphite.更多还原