The low solubility of calcium zincate produced from the chemical reaction of zinc oxide and calcium hydroxide in alkaline solution can improve the cycling life the zinc electrode , and the discharge capacity will tend to be stable . furthermore , the effects of la2o3 additives on the electrochemical performances of zinc electrodes were investigated . the results shows that the addition of la2o3 , in zinc electrode can improve the area of reduction peak and the hydrogen evolution potential which means the cathodic hydrogen evolution reaction can be hindered 氧化锌与氢氧化钙在碱性溶液中化学反应生成的难溶于碱的锌酸钙可以使锌电极的循环寿命得到提高，放电容量也趋于平稳，此外还考察了氧化镧对锌酸钙电极电化学性能的影响，结果表明：添加适量氧化镧能明显改善锌电极的电化学性能，使锌电极的还原峰电位正移，电极反应可逆性得到改善，同时也可抑制锌电极析氢反应的发生，提高了锌电极的阳极电流，对阳极反应有一定的活化作用；同时还可以改善锌电极的放电特性，增加电极的放电容量。
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