高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (9): 1680.

• 研究简报 • 上一篇    下一篇

高功率镍氢电池La1-xMgx(NiCoAl)3.6金属氢化物电极的电化学性能研究

张新波, 赵敏寿   

  1. 中国科学院长春应用化学研究所稀土化学与物理重点实验室, 长春 130022
  • 收稿日期:2002-05-22 出版日期:2003-09-24 发布日期:2003-09-24
  • 通讯作者: 赵敏寿(1941年出生),男,研究员,博士生导师,从事金属间化合物和镍氢电池负极材料研究.E-mail:eboat@qiac,jl.cn E-mail:eboat@qiac.jl.cn
  • 基金资助:

    国家自然科学基金(批准号:20171042)

Investigation on Electrochemical Properties of La1-xMgx(NiCoAl)3.6Alloy Employed as Negative Electrode in High Power MH-Ni Battery

ZHANG Xin-Bo, ZHAO Min-Shou   

  1. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2002-05-22 Online:2003-09-24 Published:2003-09-24

摘要: MH-Ni电池具有电化学比能量高、耐过充/放电性能好、无记忆效应和环境友好等优点而得到广泛应用.金属氢化物电极是MH-Ni电池的核心材料,其研究工作主要集中在稀土AB5系、钛系、锆系和镁基等合金作为MH-Ni电池金属氢化物电极方面.但这些体系合金的电化学容量低.

关键词: 金属氢化物电极, 电化学性能, 高倍率放电

Abstract: The La1-xMgx(NiCoAl)3.5system compounds, La0.9Mg0.1Ni3.1Co0.3Al0.2, La0.7Mg0.3Ni3.1· Co0.3Al0.2, La0.8Mg0.2Ni3.0Co0.4Al0.2and La0.9Mg0.1Ni3.1Co0.2Al0.3have been prepared by arc melting of constituent elements in Ar atmosphere. The electrochemical properties of these alloys have been studied through the charge-discharge recycle testing. The X-ray diffraction(XRD) analysis reveals that the as-prepared alloys have quite different crystal structures from that of AB5-type alloy. It can be found that La1-xMgx(NiCoAl)3.6system alloys are capable of performing a high rate discharge. The as-prepared alloys have much higher middle voltage than those of AB5-type alloy during the discharge period.

Key words: Metal hydride electrode, Electrochemical properties, High rate discharge

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