羟基氧化镍的研究进展

Research progress of nickel oxyhydroxides

羟基氧化镍作为锌镍电池和MH-Ni电池的正极活性物质已经逐步成为电池材料领域一个新的研究热点。综述了锌镍电池和MH-Ni电池的工作原理及羟基氧化镍的制备、结构、电性能;分析了羟基氧化镍的放电比容量及Ni(OH)2/NiOOH电极的可逆电极电势;围绕高放电比容量、自放电率低、高密度羟基氧化镍的发展前景,建议了今后的研究方向。

In recent years, as a cathode active material of Zn-Ni battery and Ni-MH battery, nickel oxyhydroxide has gradually become a new research issue in the area of the battery materials. The mechanism of Zn-Ni battery and Ni-MH battery, and the preparations, the crystal structures and the electrochemical properties of nickel oxyhydroxides were reviewed, and the discharging specific capacity of nickel oxyhydroxide and reversible electrode potential of Ni（OH）JNiOOH electrode were also analyzed. At last, according to the perspectives of high discharging specific capacity, low self-discharging rate and high density NiOOH, the research directions in the future were suggested.