密封锌镍电池发展评述

Review of the progress in sealed nickel-zinc battery

简述了锌镍电池的发展历史和锌镍电池的优缺点。评述了目前国际上密封锌镍电池的研究工作。讨论了抑制锌镍电池的锌电极在循环过程中的变形问题。论述了在正负极间插入多孔薄镍网片抑制锌枝晶生长的原理 ,并认为这是提高锌镍电池循环寿命的有效方法 ;同时应尽可能消除锌电极自放电产生的氢气和防止镍电极在充放电过程中发生膨胀。讨论了充电方法 ,认为采用脉冲电流充电可抑制锌电极产生枝晶 。

The development history of nickel zinc battery was introduced briefly as well as its advantages and disadvantages.The global development status of sealed nickel zinc battery at present was also reviewed.In addition,the method of restraining the deformation of zinc electrode of nickel zinc battery during its cycles was discussed.The principle of preventing the growth of zinc dendrites by inserting a thin porous nickel membrane between the elerodes was expounded.It was proved to be an effective method for increasing the cycle life of nickel zinc battery and for eliminating the producing of hydrogen caused by the self discharge of zinc electrode as well as for preventing the expand of nickel electrode during charge/discharge cycle as far as possible.The charge methods were also discusssed and the pulse current charge method was beneficial to restrain the growth of zinc dendrites and to depress the producing of oxygen on the nickel electrode.