Performance of Ag2O/Ag Electrode as Cathodic Electron Acceptor in Microbial Fuel Cell
来源期刊：Acta Metallurgica Sinica2017年第12期
论文作者：Hong-Yan Dai Hui-Min Yang Xuan Jian Xian Liu Zhen-Hai Liang
文章页码：1243 - 1248
摘 要：An Ag2O/Ag electrode was prepared through the electrochemical oxidation of sterling silver.This electrode was used as a cathodic electron acceptor in a microbial fuel cell（MFC）.The Ag2O/Ag electrode was characterized by scanning electron microscopy,X-ray powder diffraction and linear sweep voltammetry.The maximum voltage output of the MFC with the Ag2O/Ag cathode was maintained at between 0.47 and 0.5 V in 100 cycles,indicating the good regenerative capacity of the Ag2O/Ag electrode.The overpotential loss for silver oxide was 0.021–0.006 V,and the maximum power output,open circuit potential and short circuit current of the MFC were 1.796 W m-3,0.559 V and 9.3375 A m-3,respectively.The energy required for electrochemical reoxidation ranged from 40%to 55%of the energy produced by the MFC.Results indicated that the Ag2O/Ag electrode could be used as a cathodic electron acceptor in MFCs with excellent stability.
Hong-Yan Dai1,2，Hui-Min Yang1，Xuan Jian1，Xian Liu3，Zhen-Hai Liang1
1. College of Chemistry and Chemical Engineering,Taiyuan University of Technology2. Department of Municipal and Environmental Engineering,Taiyuan College3. Department of Chemistry,Taiyuan Normal University
摘 要：An Ag2O/Ag electrode was prepared through the electrochemical oxidation of sterling silver.This electrode was used as a cathodic electron acceptor in a microbial fuel cell（MFC）.The Ag2O/Ag electrode was characterized by scanning electron microscopy,X-ray powder diffraction and linear sweep voltammetry.The maximum voltage output of the MFC with the Ag2O/Ag cathode was maintained at between 0.47 and 0.5 V in 100 cycles,indicating the good regenerative capacity of the Ag2O/Ag electrode.The overpotential loss for silver oxide was 0.021–0.006 V,and the maximum power output,open circuit potential and short circuit current of the MFC were 1.796 W m-3,0.559 V and 9.3375 A m-3,respectively.The energy required for electrochemical reoxidation ranged from 40%to 55%of the energy produced by the MFC.Results indicated that the Ag2O/Ag electrode could be used as a cathodic electron acceptor in MFCs with excellent stability.
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