PVA-NH_(4)Cl-X中性凝胶电解质对柔性锌空气电池性能的影响  

Effect of PVA-NH_(4)Cl-X neutral gel electrolyte on the performance of flexible zinc-air batteries

作　　者：韦威风 马景灵[1,2] 王广欣 张志康[1,2] 姚一帆 Wei Weifeng;Ma Jingling;Wang Guangxin;Zhang Zhikang;Yao Yifan(Research Center for High Purity Materials,Henan University of Science and Technology,Luoyang 471023;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology,Luoyang 471023)

机构地区：[1]河南科技大学高纯材料研究中心,洛阳471023 [2]有色金属新材料与先进加工技术省部共建协同创新中心,洛阳471023

出　　处：《化工新型材料》2025年第1期125-130,143,共7页New Chemical Materials

基　　金：国外高层次人才千人计划(WQ20154100278);国家自然科学基金(U1804146)

摘　　要：采用聚乙烯醇(PVA)为聚合物基体,以氯化铵(NH_(4)Cl)为电解质主要成分,添加ZnCl_(2)、KI、KCl、KOH制备了3种中性凝胶电解质PVA-NH_(4)Cl-ZnCl_(2)、PVA-NH_(4)Cl-KI、PVA-NH_(4)Cl-KCl和碱性凝胶电解质PVA-KOH,分析了中性、碱性凝胶电解质的傅里叶红外光谱、电化学性能、保水性能和拉伸性能。结果表明:中性凝胶电解质及其组装的锌空气电池自放电性能、放电时长、比容量以及循环时长优于碱性凝胶电解质及其组装的电池;中性凝胶电解质PVA-NH_(4)Cl-KCl及其组装的电池性能最优,电解质抗拉强度可达101.40kPa,伸长率为196.43%,组装的锌空气电池比容量为793.40mAh/g,最大功率密度为1.38mW/cm^(2)。Three neutral gel electrolytes,PVA-NH_(4)Cl-ZnCl_(2),PVA-NH_(4)Cl-KI and PVA-NH_(4)Cl-KCl,as well as an alkaline gel electrolyte,PVA-KOH,were prepared using polyvinyl alcohol(PVA)as the polymer matrix,NH_(4)Cl as the main component of electrolyte,and ZnCl_(2),KI,KCl and KOH as additives.The Fourier infrared spectra,electrochemical properties,water retention and tensile properties of the neutral and alkaline gel electrolytes were analyzed.The results showed that the self-discharge performance,discharge duration,specific capacity and cycle time of the neutral gel electrolytes and their assembled zinc air batteries were better than those of the alkaline gel electrolyte and its assembled battery.The neutral gel electrolyte PVA-NH_(4)Cl-KCl and its assembled battery had the best performance,with a tensile strength of 101.40kPa and an elongation of 196.43%.The specific capacity of the assembled zinc-air battery was 793.40mAh/g,and the maximum power density was 1.38mW/cm^(2).

关 键 词：聚乙烯醇 锌空气电池 中性凝胶电解质 电化学性能 

分 类 号：TM911[电气工程—电力电子与电力传动]