中文摘要：

应用高温热解法合成层状二氧化锰（δ-MnO2），借助离子注入技术在其表层注入钛离子，形成复合材料（δ-MnO2-Ti）．材料结构及形貌由XRD、SEM及XPS表征，用恒电流充电仪测定其电化学性能．结果表明：注入钛离子后形成新的复合材料，其MnO2的层状结构没有被破坏，钛离子主要以Ti（Ⅳ）态嵌入MnO2结构．与δ-MnO2相比，改性后的δ-MnO2-Ti首次放电比容量和最大放电比容量均有明显提升．

英文摘要：

Layered MnO2 （δ-MnO2） was prepared by thermal decomposition of potassium permanganate. Ti was ion-implanted into such δ-MnO2 by physical techniques, forming a composite （δ-MnO2-Ti）. These materials were characterized by XRD, SEM, XPS techniques and their electrochemical proprieties were investigated. The results showed that the layered structure of δ-MnO2 did not been destroyed after Ti ion implantation, and the implanted Ti element was mainly Ti^4＋ as indicated by XPS. Both of the first and the highest discharge specific capacities of the ion-implanted layered MnO2 （δ-MnO2-Ti）, compared to those of δ-MnO2, were improved significantly.