摘要
介绍了采用物理掺杂和化学包覆分别在锂离子电池正极材料LiMn_2O_4中掺杂不同量的聚吡咯(PPY)的方法,考察了复合材料作为锂离子二次电池正极材料的充放电性能。结果表明,采用物理掺杂时,适量聚吡咯能够明显提高电池的工作电压平台和放电容量。采用化学包覆时LiMn_2O_4/PPY复合电极具有较大的放电容量但工作电压平台较低。
Charge-discharge properties of LiMn204/PPY composites and LiMn204 containing different amount of polypyrrole has been studied. The results indicated that as positive electrode materials LiMn204 containing suitable amount of polypyrrole exhibited high voltage platform and high discharge capacity, and LiMnzO4/PPY composites exhibited high discharge capacity and low voltage platform.
出处
《电池工业》
CAS
2005年第5期271-273,共3页
Chinese Battery Industry