论文部分内容阅读
电化学转换反应作为一种新的电极反应机制,近年来受到相当多的关注.转换反应不仅能够利用金属化合物的多价态氧化还原,大幅度提高电化学容量利用率,而且对于主体晶格的结构、嵌脱阳离子的尺寸并无特殊要求,可以应用于众多不同种类的金属化合物,针对不同的金属离子设计高容量正负极活性材料.因此,基于转换反应构建高容量电极材料正成为二次电池发展的一个新方向.本文简要分析了电化学转换反应的基本原理和实现条件,并结合作者课题组近年来的研究工作探讨了这类反应在锂离子及钠离子电池中的潜在应用.
Electrochemical conversion reaction, as a new electrode reaction mechanism, has received considerable attention in recent years. The conversion reaction can not only utilize the multivalent oxidation-reduction of metal compounds, but also greatly improve the utilization of electrochemical capacity. For the host lattice Structure, Cation The size of the cation is not critical and can be applied to many different kinds of metal compounds to design high-capacity positive and negative active materials for different metal ions. Therefore, constructing a high-capacity electrode material based on a conversion reaction is becoming a secondary A new direction of battery development.In this paper, the basic principle and the realization conditions of electrochemical conversion reaction are briefly analyzed, and the potential applications of this kind of reaction in lithium ion and sodium ion batteries are discussed in combination with recent research work by the research group of the author.