中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 26 No. 10 October 2016 |
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. Highpower International Inc., Shenzhen 518111, China）
Abstract:In order to improve the electrochemical performance of polyoxomolybdate Na3[AlMo6O24H6](NAM) as the cathode material of lithium ion battery, the NAM materials with small particle size were synthesized by elevating the synthesis temperature in the solution. The as-prepared NAM materials were investigated by FT-IR, XRD, SEM and EIS. Their discharge-charge and cycle performance were also tested. The results show that the particle size decreases to less than 10 μm at the temperature of higher than 40 °C. When synthesized at 80 °C, the NAM with the smallest particle size (~3 μm) exhibits the best electrochemical performance such as high initial discharge capacity of 409 mA·h/g and coulombic efficiency of 95% in the first cycle at 0.04C.
Key words: polyoxomolybdate; lithium ion battery; cathode material; high capacity
