非晶态V_2O_5类气凝胶正极材料的性能  

The performance of a-V_2O_5 ARG-like cathode materials

作　　者：张勇[1] 刘玉文[2] 程玉山[2] 胡信国[1] 

机构地区：[1]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001 [2]江门三捷电池实业有限公司,广东江门529000

出　　处：《电池》2005年第4期300-301,共2页Battery Bimonthly

基　　金：广东省重大科技攻关专项资助(2003A1100101;2003C105006)

摘　　要：以晶态V2O5(c-V2O5)为原料,采用熔融淬冷法制取了非晶态V2O5类气凝胶(a-V2O5ARG-like)。XRD、EIS、CV和充放电实验结果说明:该样品较c-V2O5有更好的电化学性能;在0.1C和1C倍率下放电,其首次放电比容量分别为c-V2O5的1.3倍和1.8倍;循环100次后,容量保持率高达79.5%。a-V2O5 ARG-like was prepared from e-V2O5 by melt quenching method. XRD, EIS, CV and charge-discharge test revealed that the sample achieved better electrochemical performance than c-V2O5, its initial discharge specific capacities were 1.3 times and 1.8 times of c-V2O5 at rates of 0.1 6 and 1 C discharge and the preservation ratio of capacity still kept 79.5% after 100 cycles.

关 键 词：可充锂电池 V2O5 类气凝胶 比容量 

分 类 号：TM911[电气工程—电力电子与电力传动]