High performance of HNaV_(6)O_(16)·4H2_(O) nanobelts for aqueous zinc-ion batteries with in-situ phase transformation by Zn(CF_(3)SO_(3))_(2) electrolyte

作     者：Chao Guan Fang Hu Xin Yu Hai-Lian Chen Gui-Hong Song Kai Zhu Chao Guan;Fang Hu;Xin Yu;Hai-Lian Chen;Gui-Hong Song;Kai Zhu

作者机构：School of Materials Science and EngineeringShenyang University of TechnologyShenyang 110870China 202 PlantShandong Xinhua Pharmaceutical CO.LTD.Zibo 255005China Key Laboratory of Superlight Materials and Surface Technology of Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150010China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第2期

页      面：448-456页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 0806[工学-冶金工程] 08[工学] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：This study was financially supported by the National Natural Science Foundation of China(No.51772193) China Postdoctral Science Foundation(No.2019T250254) 

主　　题：HNaV_(6)O_(16)·4H2_(O) Zinc-ion batteries Zn(CF_(3)SO_(3))_(2) ZnSO_(4) Electrolyte 

摘      要：Zn(CF_(3)SO_(3))_(2)as an electrolyte has been widely used to improve the electrochemical performance for ZIBs due to that the bulky CF_(3)SO_(3)-can reduce the solvation effect of Zn^(2+)and promote the ionic ***,we found that Zn(CF_(3)SO_(3))_(2)electrolyte can induce different electrochemical mechanisms from ZnSO_(4)*** to the ZnSO^(4)electrolyte,the HNaV_(6)O_(16)·4H2_(O)electrode with Zn(CF_(3)SO_(3))_(2)electrolyte exhibits a high capacity of 444 mAh·g^(-1)at 500 mA·g^(-1)with a capacity retention of 92.3%after 80 ***,at a high rate of 5 Ag-1,the HNaV_(6)O_(16)·4H_(2)O electrode delivers an initial discharge capacity of 328 mAh·g^(-1)with a capacity retention of 93.7%after 1000 *** from the mechanism with ZnSO4 electrolyte,the excellent cycle stability of HNaV_(6)O_(16)·4H_(2)Oelectrode can be attributed to the in-situ phase transformation to ZnxV_(2)O_(5)·nH_(2)O based on the co-intercalation of Zn^(2+)/H^(+).