球形超细锌粉用于碱锰电池理化特性研究  

Study on physico-chemical characteristics of ultrafine spherical zinc powder applied in alkaline Zn/MnO_2 battery

作　　者：王鹏[1] 张振忠[1,2] 赵芳霞[1] 陈银[1] 林峰 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]国家特种矿物材料工程技术研究中心,广西桂林541004

出　　处：《电源技术》2014年第1期44-46,共3页Chinese Journal of Power Sources

基　　金：桂林市科技攻关项目(1107003-8);江苏省科技厅社会发展计划(BS2007120);国家中小型企业创新项目(08026213700982)

摘　　要：针对直流电弧蒸发法制备的球形亚微米级及纳米级超细锌粉作为碱锰电池负极活性物质的应用问题,研究了不同粒径的超细锌粉形貌、成分、松装密度、电解液吸收量和析氢特性的物理化学特性。结果表明:超细锌粉微观上为球状形貌,颗粒分散均匀,纯度高,粉体松装密度较微米级粉体大幅度降低,平均粒径为0.360μm的超细锌粉吸液性能最佳,粒径较粗或较细均对吸液性能不利;但超细锌粉在电解液中的自腐蚀现象严重,尤其纳米锌粉,随着平均粒径的降低,自腐蚀呈现减缓趋势,需加强缓蚀处理研究。综合理化特性结果,推荐平均粒径为0.360μm的超细锌粉作为碱锰电池的负极活性物质。According to the problems of meso- and nanoscale zinc powders of DC arc plasma evaporation method, applied in alkaline Zn/MnO2 batteries as negative active material, the ultrafine zinc powders physico-chemical characteristics, such as morphology, structure, chemical composition ,apparent density, absorption of electrolyte and hydrogen evolution, were investigated. The results show that the powders are spherical, dispersed uniform and have high purity. The apparent density of ultrafine zinc powders compared with micron zinc powders is decreased dramatically. The most is 0.360 μm, and too small or large of mean particle size is bad for the absorption of electrolyte. However, the, especially nano-zinc powders, in alkaline electrolyte were serious, but with the decrease of particle size, the slow down trend of self-corrosion of ultrafine zinc powder was presented, then the transaction study of relax corrosion must be enhanced. With all above results, the ultrafine zinc powders with mean particle size of 0.360 μm was recommended as negative active material in alkaline Zn/MnO2 batteries.

关 键 词：直流电弧等离子体蒸发 超细锌粉 碱锰电池 物理化学特性 

分 类 号：TM911[电气工程—电力电子与电力传动]