五氧化二钒薄膜/电解液界面电化学研究  

Investigation on the interface electrochemical performances of vanadium pentoxide films/electrolyte

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：《电源技术》2005年第9期594-598,共5页Chinese Journal of Power Sources

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,采用熔融淬冷法成功制取了V2O5薄膜电极,研究了该电极电化学阻抗谱(EIS)的基本形状及其随电位的变化,并用等效电路拟合了不同电位下的EIS,同时系统地测试分析了与电极材料性质和电极荷电状态相联系的一些参数。对引起这些界面参数变化的可能原因进行了解释。Vanadium pentoxide film electrodes used for lithium rechargeable batteries were prepared from crystalline vanadium pentoxide （c-V2O5） by melt quenching method, then the basic shape of the electrochemical impedance spectroscopy （EIS） of V2O5 film electrodes were described. The changes of EIS with potential were studied by fitting EIS data to an equivalent circuit, and then some parameters were measured and analyzed on the electrochemical performance and the state of charge of the electrode. Possible mechanism for the changes in these interface performances was explained.

关 键 词：V2O5干凝胶薄膜电极 电化学阻抗谱 等效电路 熔融淬冷法 可充锂电池 

分 类 号：TM912.2[电气工程—电力电子与电力传动]