关键词: 纳米电极材料, 锂离子电池, 碳纳米管, 二氧化锰纳米纤维

Abstract: In this paper, the structure and morphology of the nano phase electrode materials have been characterized with XRD and TEM. The performances of electrochemical intercalation and deintercalation of lithium ions have been studied by using cyclic voltammograms and galvanostatic charge discharge techniques. The results show that the nano materials posses advantage of micro structure and Li+ ions intercalation performances. The observed high capacity and large charge discharge current density of the nano phase materials seem to have resulted from three kinds of effects: 1) an increase in the space for Li+ ions intercalation; 2) a decrease in the distance for Li+ ions to diffuse through the solid phase; 3) a decrease in real current density of high specific surface area at nano phase materials.