通过改变处理溶液中铜的含量和PH值等包覆条件，考查了Ab5型贮氢合金酸性包覆铜处理方法和相应金属氢化物电极的放电性能。研究表明该方法具有经济易操作的特点，处理溶液的PH值对铜包覆速度和电极初期放电性能有很大影响。通过循环伏安实验和紫外可见光谱技术研究了包覆铜层的稳定性，实验结果表明电极表面包覆层能通过形成氧化物，以CuO2-2的形式溶解到电解液中，并且溶解在电解液中的铜离子对氧化镍正极的电极性能产生不良影响。The coating conditions of copper on AB 5 type hydrogen storage alloy and the electrochemical performance of copper coated metal hydride electrodes have been investigated through changing the concentration of copper ions and pH value of the treatment solution.The results showed that the copper coating treatment improved the initial electrochemical performance of metal hydride electrodes,and the pH value of treatment solution was important to increase the coating rate of copper and improve the initial discharging behavior of electrodes.Furthermore,the stability of copper coated layer on metal hydride electrode also have been studied with the help of cyclic voltammetry and UV visible spectrophotometer.It was demonstrated that the copper coated layer was oxidized and dissolved into the electrolyte in the form of cupric oxide,and the redox behavior of nickel hydroxide/oxyhydroxide electrode is affected by the copper ions dissolved in the electrolyte.国家“863”计划;国家自然科学基
