| Lu2O3和Er2O3对Ni(OH)2正极高温性能的影响 |
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| 引用本文： | 樊晓光,吴伯荣,简旭宇,朱磊,陈晖.Lu2O3和Er2O3对Ni(OH)2正极高温性能的影响[J].电源技术,2007,31(12):974-978. |
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| 作者姓名： | 樊晓光 吴伯荣 简旭宇 朱磊 陈晖 |
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| 作者单位： | 北京有色金属研究总院,能源材料研究所,北京,100088;北京有色金属研究总院,能源材料研究所,北京,100088;北京有色金属研究总院,能源材料研究所,北京,100088;北京有色金属研究总院,能源材料研究所,北京,100088;北京有色金属研究总院,能源材料研究所,北京,100088 |
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| 摘 要： | 通过在金属氢化物镍蓄电池Ni(OH)2正极活性物质中分别机械添加不同含量的Er2O3和Lu2O3,研究了这两种稀土氧化物对Ni(OH)2正极高温性能的影响.充放电实验表明,添加不同量的稀土氧化物都会不同程度地改善Ni(OH)2正极在高温环境下的充电效率.添加1.5%Lu2O3或2%Er2O3的Ni(OH)2正极在高温下充电效率较高.循环伏安测试表明,添加稀土氧化物提高了Ni(OH)2正极在高温环境下的析氧副反应电位,从而提高了金属氢化物镍蓄电池Ni(OH)2正极在高温环境下的充电效率.
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| 关 键 词： | 金属氢化物镍蓄电池 Ni(OH)2正极 析氧电位 高温充电效率 |
| 文章编号： | 1002-087X(2007)12-0974-05 |
| 修稿时间： | 2007年4月13日 |
Effect of Er2O3 as additive on the performance of Ni(OH)2 electrode at high temperature |
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| FAN Xiao-guang,WU Bo-rong,JIAN Xu-yu,ZHU Lei,CHEN Hui.Effect of Er2O3 as additive on the performance of Ni(OH)2 electrode at high temperature[J].Chinese Journal of Power Sources,2007,31(12):974-978. |
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| Authors: | FAN Xiao-guang WU Bo-rong JIAN Xu-yu ZHU Lei CHEN Hui |
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| Abstract: | The effects of various percentages of Lu2O3 and Er2O3 as additives on the performance of nickel hydroxide electrodes were studied. Cyclic charge-discharge tests at different temperatures indicate that the charge efficiency of the nickel hydroxide electrodes with various percentages of Lu2O3 or Er2O3 at high temperature increased. While adding 1.5% Lu2O3 or 2% Er2O3, the efficiency reached the optimum value. Cyclic voltammetry tests indicate that the oxygen evolution overpotential of the electrodes with 1.5% Lu2O3 at high temperatures increases by adding rare earth oxide, as a result that the charge efficiency increases. |
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| Keywords: | Ni-MH battery nickel hydroxide positive electrode oxidation evolution potential charge efficiency at high temperature |
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