Constructing highly safe and long-life calcium ion batteries based on hydratedvanadium oxide cathodes featuring a pillar structure

作     者：Chun-Fang Wang Shi-Wei Zhang Lan Huang Yuan-Min Zhu Feng Liu Jian-Chuan Wang Li-Ming Tan Chun-Yi Zhi Cui-Ping Han Chun-Fang Wang;Shi-Wei Zhang;Lan Huang;Yuan-Min Zhu;Feng Liu;Jian-Chuan Wang;Li-Ming Tan;Chun-Yi Zhi;Cui-Ping Han

作者机构：Powder Metallurgy Research InstituteCentral South UniversityChangsha410083China Songshan Lake Materials LaboratoryDongguan 523808China Research Institute of Interdisciplinary Science and School of Materials Science and EngineeringDongguan University of TechnologyDongguan 523808China Department of Materials Science and EngineeringCity University of Hong KongHong Kong 999077China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2024年第43卷第6期

页      面：2597-2612页

核心收录：

学科分类：0808[工学-电气工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the Open Research Found of Songshan Lake Materials Laboratory(No.2021SLABFN04) National Natural Science Foundation of China(Nos.22109134 and 52171025) Guangdong Basic and Applied Basic Research Foundation(No.2022A1515010920) the Outstanding Youth Basic Research Project of Shenzhen(No.RCYX20221008092934093) 

主　　题：Multivalent batteries Calcium-ion batteries Layered structure Vanadium oxide Cathode materials 

摘      要：Calcium-ion batteries(CIBs)have generated intense interest due to the growing demand for safer,cheaper,and large-scale energy storage ***,their development is still in its infancy,owing to the lack of suitable cathodes for sustaining reversiblc Ca^(2+)intercalation/***,layered H_(2)V_(3)O_(8)(HVO)with Zn^(2+)pre-insertion(ZHVO)is reported as a high-rate and highly durable cathode material for *** existence of Zn^(2+)and H_(2)O pillars could expand the interlayer spacing up to 1.8 nm,which is favorable for the diffusion of bulky Ca^(2+).The formation of Zn-O bonds facilitates electron transfer and enhances electrical ***,the ZHVO cathode achieves superior capacity performance(213.9 mAh·g^(-1)at 0.2 A·g^(-1))and long lifespan(78.3%for 1,000 cycles at 5 A·g^(-1))compared to pristine *** functional theory(DFT)calculations revealed that Zn^(2+)moved during Ca^(2+)intercalation,thereby reducing the diffusion energy barrier and facilitating Ca^(2+)***,a safe aqueous calcium ion cell was successfully assembled.