摘要
价廉、低毒的锂锰氧化物已成为目前高能锂离子电池最有潜力的正极材料之一,但其在充放电过程中循环稳定性较差,制约了它的应用前景。通过掺钴改性,锂锰氧化物结构趋于稳定,减缓了容量衰减,改善了循环性能。
Owing to the low price and toxicity, the captioned material has become the most promising material for making anodes of lithium ion batteries. But its future application is adversely influenced by its poor recirculation stability during charging and discharging. It is found that when doped with cobalt, its structure tends to become more stable and the capacity fading slowed down so that its recirculation performances are improved.
出处
《上海有色金属》
CAS
2009年第4期145-149,共5页
Shanghai Nonferrous Metals
关键词
锂离子电池
锂锰氧化物
掺钴
改性
lithium ion battery
Li-Mn oxide
cobalt doping
modification
