Electrolyte effect on electrochemical behaviors of manganese fluoride material for aqueous asymmetric and symmetric supercapacitors

作     者：Zheng-Hua He Jian-Fei Gao Ling-Bin Kong Zheng-Hua He;Jian-Fei Gao;Ling-Bin Kong

作者机构：State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous MetalsLanzhou University of TechnologyLanzhou730050China School of Materials Science and EngineeringLanzhou University of TechnologyLanzhou730050China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2024年第43卷第3期

页      面：1048-1061页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 081704[工学-应用化学] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(No.52261040 and 51971104) 

主　　题：Manganese fluoride Potential window Hybrid supercapacitors Electrochemical performance 

摘      要：Exploring wide voltage window materials is not only an available measure to enhance the energy density of hybrid supercapacitor(HSCs),but also avoids the dynamic mismatch caused by different energy storage mechanisms of two electrodes in assembled symmetrical ***,there are few reports about the wide potential window materials except Bi_(2)O_(3)and VO_(2).Therefore,the MnF_(2)synthesized by solvothermal reaction was served as the electrode for *** MnF_(2)exhibited electrochemical activity in alkaline solution in three-electrode system,especially with a wide potential window from-0.8 to+0.5 V in 2 mol·L^(-1)***,the assembled MnF_(2)//MnF_(2)symmetrical HSC had a potential window of 1.5 V,and it exhibited outstanding long-cycle ***,when MnF_(2)was taken as the negative and positive respectively,the potential windows of asymmetric devices CoMoO_(4)//MnF_(2)and MnF_(2)//Activated Carbon(AC)could reach 1.3 and 1.45 V,respectively,showing excellent cycle *** work shows that MnF_(2)material has great research value in HSC,and provides a new research direction for developing high-performance devices.