【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.更多还原

【Abstract】 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.更多还原