Ultrafast Synthesis of Calcium Vanadate for Superior Aqueous Calcium-Ion Battery

作     者：Liyuan Liu Yih-Chyng Wu Patrick Rozier Pierre-Louis Taberna Patrice Simon 

作者机构：CIRIMATUMR CNRS 5085UniversitéPaul Sabatier Toulouse III118 route de Narbonne31062 ToulouseFrance RS2ERéseau Français sur le Stockage Electrochimique de l’EnergieFR CNRS 345980039 Amiens CEDEXFrance 

出 版 物：《Research》 (研究（英文）)

年 卷 期：2019年第2019卷第1期

页      面：85-95页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：This work was supported by the French Agence Nationale de la Recherche(Labex STOREX program) L.Liu is supported by the China Scholarship Council(CSC) 

主　　题：method. retention reversible 

摘      要：Recently,multivalent aqueous calcium-ion batteries(CIBs)have attracted considerable attention as a possible alternative to Li-ion ***,traditional Ca-ion storage materials show either limited rate capabilities and poor cycle life or insufficient specific ***,we tackle these limitations by exploring materials having a large interlayer distance to achieve decent specific capacities and one-dimensional architecture with adequate Ca-ion passages that enable rapid reversible(de)intercalation *** this work,we report the high-yield,rapid,and low-cost synthesis of 1D metal oxides MV_(3)O_(8)(M=Li,K),CaV_(2)O_(6),and CaV_(6)O_(16)·7H_(2)O(CVO)via a molten salt ***,using 1D CVO as electrode materials,we show high capacity 205 mA h g^(-1),long cycle life(97%capacity retention after 200 cycles at 3.0 C),and high-rate performance(117 mA h g^(-1) at 12 C)for Ca-ion(de)*** work represents a step forward for the development of the molten salt method to synthesize nanomaterials and to help pave the way for the future growth of Ca-ion batteries.