摘要
本文研究了一种新型的改性活性石墨,测量其电化学容量超过257mAh/g,并具有开路电压高,充放电效率好等优异性能,适宜用作锂离子电池(RCB)的负极材料。文中还研究了CO_2气体能很好地提高RCB碳电极的性能。通过FT—IR检测,认为是由于形成了含Li_2CO_3的SEI半透膜,有利于锂离子的通过,而阻止溶剂进一步在电极上分解。
A new type of active modifie'd graphite whose specific capacity was over 257mAh/g was investigated here. Because of its excellent characteristics of high working voltage and promising charge and discharge efficiency.it was suitable for use as anode material in lithium rechargeable batteries. It was found that additive CO. could improve greatly the characteristics of the carbon electrode of lithium -ion battery. The determination of FT-IR suggested the improvement was caused by the formation of a semipermeable membrane containing Li2CO3 which was favourable for the passing through of lithium ion while preventing the solvents from further decomposition on electrodes.
出处
《电池》
CAS
CSCD
北大核心
1998年第2期51-53,59,共4页
Battery Bimonthly
关键词
锂离子电池
负极材料
研究
Lithium Rechargeable Battery Solid Electrolyte Interphase Anode Materials Carbon Materials
