一种基于PTVE正极的高电压钾-有机自由基电池  

A High-Voltage Potassium-Organic Radical Battery Enabled by PTVE Cathode

作　　者：罗玉文 史继富 雷凯翔 徐刚[1,4,5] LUO Yu-wen;SHI Ji-fu;LEI Kai-xiang;XU Gang(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;Jinan University,Guangzhou 510632,China;Nankai University,Tianjin 300071,China;CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院广州能源研究所,广州510640 [2]暨南大学,广州510632 [3]南开大学,天津300071 [4]中国科学院可再生能源重点实验室,广州510640 [5]广东省新能源和可再生能源研究开发与应用重点实验室,广州510640 [6]中国科学院大学,北京100049

出　　处：《新能源进展》2019年第3期271-276,共6页Advances in New and Renewable Energy

基　　金：国家重点研发项目(2018YFD0700200);国家自然科学基金项目(21673243,21603108)

摘　　要：钾/钾离子电化学储能系统具有诸多优势,如钾资源丰富、K^+/K标准电位低及K+导电性高等。钾离子电池/超级电容器、K//O2电池和K//S电池正受到越来越多的关注,同时也在实际应用中面临许多挑战,如缺乏高电压储钾材料等。因此,构建新型钾/钾离子电化学储能体系具有重要意义。本文成功组装了钾-有机自由基(K//PTVE)电池,并对其电化学性能进行了研究。结果显示,该电池表现出较高的放电电压(3.63V),具有良好的倍率性能和循环稳定性。Potassium/potassium-ion based electrochemical energy storage systems have many advantanges,such as high abundance of potassium,low equilibrium potential of K^+/K,high ionic conductivity of K^+,and so on.Potassium-ion battery/supercapacitor,K//O2 battery and K//S battery are catching massive attentions and facing challenge of lacking high-voltage potassium-ion storage materials for practical application.Thus,it is of great significance to construction of novel potassium/potassium-ion based electrochemical energy storage systems.In this work,a potassium-organic radical battery of K^+/PTVE was successfully constructed,and its electrochemical performance was investigated.K//PTVE showed high discharge voltage of 3.63 V,good rate capability and cycle stability.

关 键 词：电池 有机自由基 密度泛函理论 高电压 

分 类 号：TK02[动力工程及工程热物理]