| 掺杂球形氢氧化镍的循环伏安特性 |
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| 引用本文： | 刘建华,杨敬武,唐致远. 掺杂球形氢氧化镍的循环伏安特性[J]. 天津大学学报(自然科学与工程技术版), 2000, 33(1): 118-121 |
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| 作者姓名： | 刘建华 杨敬武 唐致远 |
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| 作者单位： | 刘建华（天津大学化工学院，天津 300072）;杨敬武（天津大学化工学院，天津 300072）;唐致远（天津大学化工学院，天津 300072） |
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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粉末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／ＮｉＯＨ之间进行；研究了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电极氧的析出电位均比纯Ｎｉ（ＯＨ）２的氧的析出电位有所提高。
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| 关 键 词： | 微电极 循环伏安 氢氧化镍 球形 掺杂 电极反应 |
| 文章编号： | 0493-2137(2000)01-0118-04 |
| 修稿时间： | 1999-05-30 |
STUDY ON CYCLIC VOLTAMMETRY CHARACTERISTICS OF DOPING Ni(OH)2 |
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| LIU Jian-hua,YANG Jing-wu,TANG Zhi-yuan. STUDY ON CYCLIC VOLTAMMETRY CHARACTERISTICS OF DOPING Ni(OH)2[J]. Journal of Tianjin University(Science and Technology), 2000, 33(1): 118-121 |
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| Authors: | LIU Jian-hua YANG Jing-wu TANG Zhi-yuan |
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| Affiliation: | LIU Jian-hua,YANG Jing-wu,TANG Zhi-yuan;(School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China) |
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| Abstract: | The cyclic voltammetry was used to study the powder microelectrode of Ni(OH) 2.It was demonstrated that the electrochemical process of 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 addition of Co approximately doubled the proton diffusion coefficient than pure Ni(OH) 2,while addition of Zn would slightly decrease the coefficient.However,oxygen evolution potentials of the microelectrodes of Ni(OH) 2 doped with Co and Zn were a little higher than that of pure Ni(OH) 2. |
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| Keywords: | Ni(OH)2 microelectrode cyclic voltammetry diffusion coefficient |
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