引用本文:
杨华铨, 刘欣, 蔡生民, 周国定. MnO2电极的循环伏安光电化学测量[J]. 物理化学学报,
1991, 7(04): 409-412.
doi:
10.3866/PKU.WHXB19910407
Citation: Yang Hua-Quan, Liu Xin, Cai Sheng-Min, Zhou Guo-Ding. A Photoelectrochemical Study of Cyclic Voltammetry of MnO2 Electrode[J]. Acta Physico-Chimica Sinica, 1991, 7(04): 409-412. doi: 10.3866/PKU.WHXB19910407
Citation: Yang Hua-Quan, Liu Xin, Cai Sheng-Min, Zhou Guo-Ding. A Photoelectrochemical Study of Cyclic Voltammetry of MnO2 Electrode[J]. Acta Physico-Chimica Sinica, 1991, 7(04): 409-412. doi: 10.3866/PKU.WHXB19910407
MnO2电极的循环伏安光电化学测量
摘要:
用循环伏安法的光电化学现场测量研究了γ-MnO_2在充放电过程中的电化学和光电化学性质, γ-MnO_2本身的光电流为正值, 在阴极还原过程中光电流不断减小, 由正值变为负值。说明γ-MnO_2是n型半导体, 阴极还原过程相当于对γ-MnO_2进行了p型掺杂。
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关键词:
- MnO2; 循环伏安法; 光电化学
English
A Photoelectrochemical Study of Cyclic Voltammetry of MnO2 Electrode
Abstract:
Electrochemical and photoeletrochemical properties of electrodepositing γ-MnO_2 are studied when it is charged and discharged in 1 mol·L~(-3) KOH using cyclic voltammetry and in-situ photoelectrochemical method. When γ-MnO_2 is reduced,the photocurrent decreases from positive to negative. We concluded that γ-MnO_2 is a n-type semiconductor, but it is p-type doped during the reduction processes.
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