| 氧化方式对发泡镍电极中CoOOH导电网络稳定性的影响 |
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| 引用本文： | 李晓峰,魏彦伟,董会超.氧化方式对发泡镍电极中CoOOH导电网络稳定性的影响[J].电化学,2008,14(1):83-86. |
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| 作者姓名： | 李晓峰 魏彦伟 董会超 |
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| 作者单位： | 郑州轻工业学院材料与化工学院,郑州轻工业学院材料与化工学院,郑州轻工业学院材料与化工学院 河南郑州450002,河南郑州450002,河南郑州450002 |
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| 摘 要： | 应用化学氧化(CO)和电化学氧化法(EO)于发泡式镍电极中引入CoOOH导电网络.循环伏安和X射线衍射法研究其还原氧化行为.实验表明,由化学氧化法制备的CoOOH(CO),其电化学还原氧化反应的可逆性优于CoOOH(EO);当镍电极的电位被强制性降低时,前者的结构能够保持稳定.因此,金属氢化物-镍电池经过强制性过放电储存后,于镍电极中引入CoOOH(CO)导电网络的电池容量保持率达到97.7%,而引入CoOOH(EO)导电网络的电池仅为81.4%.
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| 关 键 词： | 金属氢化物-镍电池 发泡镍电极 CoOOH导电网络 氧化方式 |
| 文章编号： | 1006-3471（2008）01-0083-04 |
| 收稿时间： | 2007-10-29 |
| 修稿时间： | 2007-11-28 |
Effects of Oxidation Methods on the Stability of CoOOH Conductive Network in Foam Nickel Electrodes |
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| LI Xiao-feng,WEI Yan-wei,DONG Hui-chao.Effects of Oxidation Methods on the Stability of CoOOH Conductive Network in Foam Nickel Electrodes[J].Electrochemistry,2008,14(1):83-86. |
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| Authors: | LI Xiao-feng WEI Yan-wei DONG Hui-chao |
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| Institution: | LI Xiao-feng,WEI Yan-wei,DONG Hui-chao(Department of Material , Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China) |
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| Abstract: | Two kinds of the cobalt oxyhydroxide conductive networks in foam nickel electrodes were prepared by different methods i.e.the electrochemical-oxidation(EO) and chemical-oxidation(CO) and which redox behaviors were studied by using cyclic voltammetry and X-ray diffraction measurements.The results show that the CoOOH(CO) has better redox reversibility than CoOOH(EO) and the structure of the former can be kept when nickel electrodes are subjected to a negative potential.Thus,98.7% capacity retention is demonst... |
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| Keywords: | nickel/metal-hydride battery foam nickel electrode cobalt oxyhydroxide conductive network oxidation method |
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