Methylene blue intercalated vanadium oxide with synergistic energy storage mechanism for highly efficient aqueous zinc ion batteries

作     者：Yunxiao Tong Ying Zang Senda Su Yinggui Zhang Junzhuo Fang Yongqing Yang Xiaoman Li Xiang Wu Fuming Chen Jianhua Hou Min Luo Yunxiao Tong;Ying Zang;Senda Su;Yinggui Zhang;Junzhuo Fang;Yongqing Yang;Xiaoman Li;Xiang Wu;Fuming Chen;Jianhua Hou;Min Luo

作者机构：State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical EngineeringSchool of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021NingxiaChina School of Materials Science and EngineeringShenyang University of TechnologyShenyang 110870LiaoningChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum MaterialsSchool of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou 510006GuangdongChina College of Environment Science and EngineeringYangzhou UniversityYangzhou 225009JiangsuChina 

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

年 卷 期：2023年第77卷第2期

页      面：269-279,I0007页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(21965027 and 22065030) the Natural Science Foundation of Ningxia Province(2022AAC03109) the National First-rate Discipline Construction Project of Ningxia:Chemical Engineering and Technology(NXY-LXK2017A04) 

主　　题：Synergistic energy storage mechanism Aqueous zinc-ion batteries Vanadium oxides Pre-intercalation strategy Methylene blue 

摘      要：With the rise of aqueous multivalent rechargeable batteries,inorganic-organic hybrid cathodes have attracted more and more attention due to the complement of each other’s ***,a strategy of designing hybrid cathode is adopted for high efficient aqueous zinc-ion batteries(AZIBs).Methylene blue(MB)intercalated vanadium oxide(HVO-MB)was synthesized through sol-gel and ion exchange *** with other organic-inorganic intercalation cathode,not only can the MB intercalation enlarge the HVO interlayer spacing to improve ion mobility,but also provide coordination reactions with the Zn^(2+)to enhance the intrinsic electrochemical reaction kinetics of the hybrid *** a key component for the cathode of AZIBs,HVO-MB contributes a specific capacity of 418 mA h g^(-1) at 0.1 A g^(-1),high rate capability(243 mA h g^(-1) at 5 A g^(-1))and extraordinary stability(88%of capacity retention after 2000cycles at a high current density of 5 A g^(-1))in 3 M Zn(CF_(3)SO_(3))_(2) aqueous *** electrochemical kinetics reveals HVO-MB characterized with large pseudocapacitance charge storage behavior due to the fast ion migration provided by the coordination reaction and expanded interlayer ***,a mixed energy storage mechanism involving Zn^(2+)insertion and coordination reaction is confirmed by various ex-situ ***,this work opens up a new path for constructing the high performance cathode of AZIBs through organic-inorganic hybridization.