ZnO/CNFs锂硫电池隔膜的制备及其电化学性能研究  

Study on preparation and electrochemical performance of ZnO/CNFs lithium-sulfur battery separator

作　　者：李金宝 黎金桂 修慧娟 杜晓云 王芝 张天聪 赵海芝 LI Jin-bao;LI Jin-gui;XIU Hui-juan;DU Xiao-yun;WANG-Zhi;ZHANG Tian-cong;ZHAO Hai-zhi(College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, Shaanxi University of Science & Technology, Xi′an 710021, China)

机构地区：[1]陕西科技大学轻工科学与工程学院轻化工程国家级实验教学示范中心陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021

出　　处：《陕西科技大学学报》2022年第1期13-18,24,共7页Journal of Shaanxi University of Science & Technology

基　　金：国家“十三五”重点研发计划项目(2017YFB0307901)。

摘　　要：利用碳纳米纤维(CNFs)网络结构固定三维针状氧化锌(ZnO)晶须,从而制备得到ZnO/CNFs中间层,并通过中间层曲折的孔隙通道,延长多硫化锂的穿梭路径,使其能稳定的通过化学吸附和物理吸附对锂硫电池的“穿梭效应”进行抑制,通过充放电测试和循环测试等表征结果表明,在0.1 C的电流密度下,电池初始放电容量达1458 mAh·g^(-1),库仑效率保持在99.4%;在0.5 C的电流密度下,初始放电容量仍能达到1113 mAh·g^(-1),经过300次的充放电循环后,放电容量依然维持在734 mAh·g^(-1).Using carbon nanofibers(CNFs)network structure to fix three-dimensional acicular zinc oxide(ZnO)whiskers,thereby preparing an intermediate layer of ZnO/CNFs,and through the tortuous pore channels of the intermediate layer,the shuttle path of lithium polysulfide is prolonged,so that it can Stably inhibits the"shuttle effect"of lithium-sulfur batteries through chemical adsorption and physical adsorption.Characterization results such as charge-discharge test and cycle test show that the initial discharge capacity of the battery reaches 1458 mAh·g^(-1) at a current density of 0.1 C,The coulombic efficiency remains at 99.4%;at a current density of 0.5 C,the initial discharge capacity can still reach 1113 mAh·g^(-1),and after 300 cycles of charge and discharge,the discharge capacity remains at 734 mAh·g^(-1).

关 键 词：氧化锌晶须 碳纳米纤维 隔膜 锂硫电池 

分 类 号：TM912[电气工程—电力电子与电力传动]