应用化学 ›› 1993, Vol. 0 ›› Issue (3): 85-87.

• 研究简报 • 上一篇    下一篇

电解液浓度对氢化物电极性能的影响

赵东江, 王宝忱, 蔡称心   

  1. 中国科学院长春应用化学研究所 130022 长春
  • 收稿日期:1992-04-20 修回日期:1992-09-18 出版日期:1993-06-10 发布日期:1993-06-10

INFLUENCES OF ELECTROLYTE CONCENTRATION ON THE PERFORMANCES OF METAL HYDRIDE ELECTRODE

Zhao Dongjiang, Wang Baochen, Cai Chengxin   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun
  • Received:1992-04-20 Revised:1992-09-18 Published:1993-06-10 Online:1993-06-10

摘要: 镍/氢化物(Ni/MH)电池以其洁净、安全、高容量、大功率、长寿命而受到人们的极大关注。贮氢电极材料的研究是开发Ni/MH电池的中心,已有较多报道。Boonstra等研究了氧化、粉末的处理等对LaNi5电极性能的影响。本文探讨电解液浓度对MLNi3.5MnCO0.4Al0.1(ML代表富镧混合稀土)电极放电性能的影响,并对其循环伏安性能进行了研究。

关键词: 氢化物电极, 稀土镍合金, 电解液浓度, 性能

Abstract: The discharge characteristics of MLNi3.5MnCo0.4Al0.1 (ML=mixed rare earths rich in lanthanum) hydrogen storage electrode were studied in the KOH solution of different concentration. The discharge capacity, fast discharge ability, selfdischarge rate of MH electrode were found to be improved by increasing the electrolyte concentration. The linear relationship between Ip and υ1/2 values obtained from cyclic voltammetry curves indicated that the reactions at the electrode were controlled by diffusion process.

Key words: metal hydride electrode, rare earth-nickel alloy, electrolyte concentration, performance