摘要
研究了Pt掺杂对LiCoO2电化学性能的影响.以氧化物形式将少量Pt元素引入到 LiCoO2中,发现形成了LiCoO2-Li2PtO3-Pt混合化合物系统.比较了纯LiCoO2和该LiCoO2 基复合材料的电化学性能,结果显示复合材料具有比纯LiCoO2材料优秀得多的倍率性能,表 明Li离子在该复合化合物中有更快的扩散速率,恒电流滴定实验结果也证明了这一点.
The influence of the initial addition of Pt on the microstructure and electrochemical properties of synthesized LiCoO2-based material was investigated. A small amount of Pt additive induces Li2PtO3 and Pt in matrix LiCoO2 to form a multi-phase composite. This multi-phase composite shows the improved rate performance and cycleability at high rate in comparison with the single-phase of LiCoO2. This behavior is attributed to the enhanced diffusion of Li ion in the LiCoO2 matrix, which can be demonstrated by galvanostatic intermittent titration technique.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第2期351-358,共8页
Journal of Inorganic Materials
