| 掺杂球形氢氧化镍电化学行为研究 |
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| 引用本文： | 李新海,刘建华,郭炳昆,王志兴,蒋汉瀛.掺杂球形氢氧化镍电化学行为研究[J].中南大学学报(自然科学版),1998(6). |
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| 作者姓名： | 李新海 刘建华 郭炳昆 王志兴 蒋汉瀛 |
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| 作者单位： | 中南工业大学冶金物理化学与化学新材料研究所 |
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| 摘 要： | 采用循环伏安法研究了Ｎｉ（ＯＨ）２粉末微电极，认为Ｎｉ（ＯＨ）２微电极电化学过程是一个准可逆过程且电极反应在Ｎｉ（ＯＨ）２／ＮｉＯＯＨ之间进行．研究了在阳极过程中掺杂元素对Ｎｉ（ＯＨ）２质子扩散系数的影响，发现掺Ｃｏ后比纯Ｎｉ（ＯＨ）２的扩散系数提高近１倍，而掺Ｚｎ后则扩散系数有所降低．掺Ｃｏ和Ｚｎ后Ｎｉ（ＯＨ）２电极的析氧电位均比纯Ｎｉ（ＯＨ）２的析氧电位有所提高．
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| 关 键 词： | Ni（OH）_2 微电极 循环伏安 扩散系数 |
STUDY ON THE ELECTROCHEMICAL BEHAVIOR OF THE Ni(OH) 2 ELECTRODE CONTAINING OTHER ELEMENTS |
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| Li Xinhai,Liu Jianhua,Guo Binkun,Wang Zhixing,Jiang Hanying.STUDY ON THE ELECTROCHEMICAL BEHAVIOR OF THE Ni(OH) 2 ELECTRODE CONTAINING OTHER ELEMENTS[J].Journal of Central South University:Science and Technology,1998(6). |
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| Authors: | Li Xinhai Liu Jianhua Guo Binkun Wang Zhixing Jiang Hanying |
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| Abstract: | The cycling voltammetry was used to study the powder microelectrode of Ni(OH) 2. It was demonstrated that the electrochemical process for the Ni(OH) 2 microelectrode was a pseudo reversible one and the electrode reaction proceeded between Ni(OH) 2 and NiOOH. The effects of the additive elements Co and Zn on the proton diffusion coefficients in the anodic process were investigated. The experimental results showed that the proton diffusion coefficient was approximately doubled with the addition of Co. However it slightly decreases after the addition of Zn. The oxygen evolution potential for the nickel microelectrode added with Co and Zn was a little bigger than that of the pure Ni(OH) 2 microelectrode. |
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| Keywords: | Ni(OH) 2 microelectrode cycling voltammetry diffusion coefficient |
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