Kinetics of electrochemical lithium intercalation into thin tungsten (VI) oxide layers

被引：39
|
作者：
Churikov, A. V. [1 ]
Ivanishchev, A. V. [1 ]
Ivanishcheva, I. A. [1 ]
Zapsis, K. V. [1 ]
Gamayunova, I. M. [1 ]
Sycheva, V. O. [1 ]
机构：
[1] Chernyshevsky Saratov State Univ, Saratov 410012, Russia
来源：
RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2008年 / 44卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
intercalation; lithium; tungsten oxide; chronopotentiometry; voltammetry; impedance spectroscopy; diffusion;
D O I：
10.1134/S1023193508050054
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The methods of galvanostatic intermittent titration, cyclic voltammetry, and electrode impedance spectroscopy are used to study the behavior of tungsten (VI) oxide film electrodes free of binding and conducting additives in the course of reversible lithium intercalation from nonaqueous electrolyte at 25 degrees C. The studies are performed for electrodes with different degrees of crystallinity at the variation of the lithium concentration in intercalate from zero to 0.017 mol/cm(3). Lithium diffusion coefficient is in the range of 10(-11)-10(-16) cm(2)/s. The concentration dependences of the intercalation-layer transport parameters are analyzed, the equivalent circuit versions are discussed, and results obtained by different methods are compared.
引用
收藏
页码：530 / 542
页数：13
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