| MLNi_(4-x)MnAl_x贮氢电极的交流阻抗研究 |
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| 引用本文： | 赵东江,马松艳,蔡称心,王宝忱. MLNi_(4-x)MnAl_x贮氢电极的交流阻抗研究[J]. 电源技术, 1994, 0(2) |
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| 作者姓名： | 赵东江 马松艳 蔡称心 王宝忱 |
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| 作者单位： | 黑龙江省绥化师专化学系(赵东江，马松艳)，中国科学院长春应用化学研究所(蔡称心，王宝忱) |
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| 摘 要： | MH电极的交流抗阴搞图谱由两个半圆组成,低频区大半圆对应于氢的吸收过程,高频区小半圆对应于电化学反应过程.对于MLNi_(4-x)MnAl_x电极,随着Al含量的增加,阻抗图谱低频半圆明显增大,而高频半圆几乎不变;此外、电极的循环次数、充放电状态等对阻抗图谱均有较大影响.
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| 关 键 词： | 贮氢电极 吸附 氧化膜 |
AC impedance study of MLNi_(4-x) MnAl_x hydrogen storage electrodes |
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| Zhao Dongjiang and Ma Songyan. AC impedance study of MLNi_(4-x) MnAl_x hydrogen storage electrodes[J]. Chinese Journal of Power Sources, 1994, 0(2) |
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| Authors: | Zhao Dongjiang and Ma Songyan |
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| Affiliation: | Zhao Dongjiang and Ma Songyan Department of Chemistry,Suihua Normal College,152061Cai Chenxin and Wang Baochen Changchun Institute of Applied Chemistry,Academia Sinica,130022 |
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| Abstract: | The electrochemical properties of MLNi4_xMnAlx hydrogen Storage electrodes have been studied by AC impedance nuethod The AC impedance measurement shows that MH electrode reaction is a multistep reaction process including charge transfer, adsorption and diffusion of hydrogen atoms in hydrogen storage alloy. The impedance diagram displays two semi-circles. The high frequency one is corresponding to electrochemical reaction process and the low frequency one is to process of hydrogen adsorption. The low frequency semi-circle is effected by cycle number charge state and composition of MH electrode. |
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| Keywords: | hydrogen storage electrode adsorption oxide film |
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