Study of spinel Li4Ti5O12 electrode reaction mechanism by electrochemical impedance spectroscopy

2013 ◽  
Vol 108 ◽  
pp. 841-851 ◽  
Author(s):  
Kai Wu ◽  
Jun Yang ◽  
Xiang-Yun Qiu ◽  
Jin-Mei Xu ◽  
Qian-Qian Zhang ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Reaction Mechanism ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Electrode Reaction

Dynamics Study of TiO2 Semiconductor Photoelectrode by EIS in the Ammonia Degradation

2011 ◽  
Vol 183-185 ◽  
pp. 2192-2196 ◽  
Author(s):  
Sheng Han Zhang ◽  
Ke Xin Liang ◽  
Yu Tan
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Reaction Mechanism ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Electrical Parameters ◽  
Rate Determining Step ◽  
Products Analysis ◽  
Ammonia Degradation ◽  
Tio2 Photoanode ◽  
Semiconductor Character

The photoelectrocatalytic activation and semiconductor character parameter have been investigated by the electrochemical impedance spectroscopy (EIS) and Mott-Schottky test on the Ti/TiO2 photoanode in ammonia system. Based on the evolution of electrical parameters of the equivalent circuit, the most probable dynamics has been stated that the redox reaction in the Ti/TiO2 film photoanode interface is the main rate-determining step. According to the products analysis, the reaction mechanism of ammonia degradation by TiO2 has been presented.

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