Molten salt synthesis of α-MnO_(2)/Mn_(2)O_(3) nanocomposite as a high-performance cathode material for aqueous zinc-ion batteries

作     者：Aixiang Huang Weijun Zhou Anran Wang Minfeng Chen Qinghua Tian Jizhang Chen Aixiang Huang;Weijun Zhou;Anran Wang;Minfeng Chen;Qinghua Tian;Jizhang Chen

作者机构：College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037JiangsuChina Department of ChemistrySchool of SciencesZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry UniversityNanjing 210037JiangsuChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第3期

页      面：475-481页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：funded by the National Natural Science Foundation of China(No.51902165) the Natural Science Foundation of Jiangsu Province(No.BK20170917) the Scientific Research Foundation for High-Level Talents of Nanjing Forestry University(No.GXL2016023) the Program of High-Level Talents in Six Industries of Jiangsu Province(No.XCL-040) the Jiangsu Specially-Appointed Professor Program。 

主　　题：Manganese oxides Molten salt synthesis Nanostructured composites Aqueous batteries Zinc ion storage 

摘      要：Thanks to low cost,high safety,and large energy density,aqueous zinc-ion batteries have attracted tremendous interest worldwide.However,it remains a challenge to develop high-performance cathode materials with an appropriate method that is easy to realize massive production.Herein,we use a molten salt method to synthesize nanostructured manganese oxides.The crystalline phases of the manganese oxides can be tuned by changing the amount of reduced graphene oxide added to the reactant mixture.It is found that the α-MnO_(2)/Mn_(2)O_(3) nanocomposite with the largest mass ratio of Mn_(2)O_(3) delivers the best electrochemical performances among all the products.And its rate capability and cyclability can be significantly improved by modifying the Zn anode with carbon black coating and nanocellulose binder.In this situation,the nanocomposite can deliver high discharging capacities of 322.1 and 213.6 mAh g^(-1) at 0.2 and 3 Ag^(-1),respectively.After 1000 cycles,it can retain 86.2% of the capacity at the 2 nd cycle.Thus,this nanocomposite holds great promise for practical applications.