PVA碱性凝胶聚合物电解质电化学稳定性及其在锌镍二次电池中的应用  

Electrochemical Stability of PVAalkaline Gelpolymer Electrolyte and Its Application in Ni/Zn Secondary Battery

作　　者：刘建敏[1] 王军红[1] 杨化滨[1] 周作祥[1] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071

出　　处：《南开大学学报（自然科学版）》2005年第4期37-41,共5页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：教育部科学技术研究重点项目(01048)

摘　　要：溶解铸膜法制备了PVA(聚乙烯醇)-KOH碱性聚合物电解质.用循环伏安和激光拉曼光谱对其电化学稳定性进行了研究,并将其应用于锌镍二次模拟电池.结果表明,该固态电解质具有较好的稳定性,循环寿命远远高于以5 m o l/L KOH水溶液为电解质的锌镍电池.Polyvinyl alcohol （PVA）alkaline gel polymer electrolyte （GPE）membranes were successfully prepared by a solution-casting technique and applied in secondary Ni/Zn batteries. Their electrochemical stabilities had been investigated by cyclic voltammograms （CV） and Raman spectra. The results indicated that the GPE membranes had promising electrochemical stabilities. Compared with the one employing a 5 mol/L KOH aqueous solution as the electrolyte, the Ni/Zn secondary battery with the PVA alkaline gel polymer as the electrolyte had longer cycle life.

关 键 词：聚乙烯醇 碱性聚合物电解质 电化学稳定性 锌镍二次电池 

分 类 号：TM912.2[电气工程—电力电子与电力传动] O646[理学—物理化学]