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.
出处
《电源技术》
CAS
CSCD
北大核心
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)
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
vanadium pentoxide film electrodes
electrochemical impedance spectrum
equivalent circuit
melt quenching method
lithium rechargeable batteries
