大功率碱性Zn-MnO₂二次电池的研究（Ⅴ）——某些金属氧化物添加剂对MnO₂电极性能的影响

大功率碱性Zn-MnO 2 二次电池的研究（Ⅴ）——某些金属氧化物添加剂对MnO 2 电极性能的影响 A STUDY OF HIGH POWER SEGONDARY ALKALINE MnO 2 -Zn CELL（Ⅴ） 李国栋 first-author 白力军 李宁先 廖丹雄 高佑才 本文报告利用动电位扫描法和x-射线衍射分析法研究MnO 2 电极的实验结果,着重讨论诸如Ni（OH） 2 ,PbO,ZnO,CaO和TiO 2 等金属氧化物添加剂对MnO 2 电极行为的影响。结果表明,Ni（OH） 2 和PbO以及它们混合物的添加有利于改善MnO 2 电极的特性,CaO和TiO 2 对MnO 2 的电化学行为影响不大。ZnO能够抑制Mn（OH） 2 的生成,但当电位低于0.7伏时容易形成ZnMn 2 O 4 ,因此对MnO 2 电极的可逆性反而是有害的。 The method of linear potential sweep technique （2.5mV/ses） and x-ray diffraction were employed in the study of the effect of addition of metaloxides on the output behavior of MnO 2 electrode. It was found that both Ni（OH） 2 and PbO, especially their mixture, could improve the Charge-discharge characteristics of MnO 2 electrode, On the other hand, CaO and TiO 2 were found to be uneffective. The addition of ZnO could also suppress somewhat the formation of Mn （OH） 2 during dischare process. However, ZnMn 2 O 4 was found at potenlial more negative than 0.7V. For this reason ZnO should be considered as a detrimental substance that could seriously affect the reversibility of MnO 2 electrode. 1981-04-01 2021-04-01 4