| 镍-氢电池充放电过程中的化学物理现象及机制 |
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| 引用本文： | 杨传铮,娄豫皖,夏保佳.镍-氢电池充放电过程中的化学物理现象及机制[J].吉首大学学报(自然科学版),2009,30(6):54-58. |
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| 作者姓名： | 杨传铮 娄豫皖 夏保佳 |
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| 作者单位： | （中国科学院上海微系统与信息技术研究所，上海 200050） |
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| 基金项目： | 上海科学技术专项基金，上海博士后科研基金 |
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| 摘 要： | 用X射线衍射等方法分析了MH/Ni电池电极过程中电极活性材料β-Ni(OH)2和AB5合金的精细结构和微结构的变化，并把其与电池性能联系起来，从而揭示了充放电过程的物理现象和物理机制.分析发现：MH/Ni电池的物理导电机制是氢离子在正负极间的定向迁移和运动，氢离子是由氢原子离开和β-Ni(OH)2来提供，而不是由β-Ni(OH)2→β-NiOOH的相变来提供.
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| 关 键 词： | 化学物理 MH/Ni电池 相结构和微结构 X射线衍射 |
Chemical Physical Phenomena During Charge-Discharge Processes of MH/Ni Battery and Its Mechanism |
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| YANG Chuan-zheng,LOU Yu-wan,XIA Bao-jia.Chemical Physical Phenomena During Charge-Discharge Processes of MH/Ni Battery and Its Mechanism[J].Journal of Jishou University(Natural Science Edition),2009,30(6):54-58. |
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| Authors: | YANG Chuan-zheng LOU Yu-wan XIA Bao-jia |
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| Institution: | （Shanghai Institute of Micro-System and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China） |
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| Abstract: | The fine structure and microstructure changes of electrode active materials β-Ni(OH)2 and AB5 alloy during charge-discharge processes are studied in detail by X-ray diffraction (XRD).Chemical physical of electrode active materials and physical conductive mechanism are elucidated.To be brief,the physical conductive mechanism of MH/Ni battery is the directional migrating and moving of hydrogen ions between the positive and negative electrodes because hydrogen atoms are deviating from the β-Ni(OH)2 lattice and inserting into AB5. |
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| Keywords: | chemical physics MH/Ni battery phase structure and microstructure X-ray diffraction (XRD) |
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