Some new facts on electrochemical reaction mechanism for transition metal oxide electrodes
Some new facts on electrochemical reaction mechanism for transition metal oxide electrodes
复制标题
DOI：
10.1016/j.jpowsour.2008.10.052
复制
发表时间：
2009-04
影响因子：
9.2
通讯作者：
Chun-hua Chen;N. Ding;Long Wang;Yan Yu;I. Lieberwirth
中科院分区：
文献类型：
--
作者：
Chun-hua Chen;N. Ding;Long Wang;Yan Yu;I. Lieberwirth
过渡金属氧化物是一种新型的锂离子电池负极材料。由于它们的高容量（通常超过700mAhg−1）和优异的循环性能，近年来引起了人们的广泛关注。关于这类电极的电化学反应机理，Tarascon及其同事提出的转化反应机理被广泛接受，即MOx+2xLi = M+xLi2O。然而，在我们最近的探索中，我们发现了一些新的现象，这可能有助于我们进一步理解电极反应机理，甚至提出了修改当前转化反应机理的必要性。这些新现象可以概括为电化学铣削、容量增加和无金属形成效应。
Transition metal oxides represent a new type of anode materials for lithium-ion batteries. Due to their high capacity (usually above 700mAhg−1) and excellent cycleability, they have attracted much attention in recent years. Regarding the electrochemical reaction mechanism for this type of electrode, the conversion reaction mechanism proposed by Tarascon and co-workers is widely accepted, i.e. MOx+2xLi⇆M+xLi2O. Nevertheless, in our recent explorations, we have found some new phenomena which may help us to further understand the electrode reaction mechanism, and even pose a necessity to modify the current conversion reaction mechanism. These new phenomena can be summarized as electrochemical milling, capacity rise and no-metal-formation effects.