Porous Co_(2)VO_(4) Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries

作     者：Jinghui Ren Zhenyu Wang Peng Xu Cong Wang Fei Gao Decheng Zhao Shupei Liu Han Yang Di Wang Chunming Niu Yusong Zhu Yutong Wu Xiang Liu Zhoulu Wang Yi Zhang Jinghui Ren;Zhenyu Wang;Peng Xu;Cong Wang;Fei Gao;Decheng Zhao;Shupei Liu;Han Yang;Di Wang;Chunming Niu;Yusong Zhu;Yutong Wu;Xiang Liu;Zhoulu Wang;Yi Zhang

作者机构：School of Energy Science and EngineeringNanjing Tech UniversityNanjing 211816People’s Republic of China Center of Nanomaterials for Renewable EnergyState Key Laboratory of Electrical Insulation and Power EquipmentSchool of Electrical EngineeringXi’an Jiaotong UniversityXi’an 710054People’s Republic of China Department of Computational Materials DesignMax-Planck-Insitut Für Eisenforschung GmbHMax-Planck-Straße 140237 DüsseldorfGermany 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2022年第14卷第1期

页      面：107-120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 Key Research and Development Project(2018YFE0124800) the National Nature Science Foundation of China(51702157,51873086,51673096) 

主　　题：Lithium-ion batteries Anode Fast-charging High-energy Cobalt vanadate oxide 

摘      要：High-energy–density lithium-ion batteries(LIBs)that can be safely fast-charged are desirable for electric ***,sub-optimal lithiation potential and low capacity of commonly used LIBs anode cause safety issues and low energy *** we hypothesize that a cobalt vanadate oxide,Co_(2)VO_(4),can be attractive anode material for fast-charging LIBs due to its high capacity(~1000 mAh g^(−1))and safe lithiation potential(~0.65 V ***^(+)/Li).The Li+diffusion coefficient of Co2VO4 is evaluated by theoretical calculation to be as high as 3.15×10^(-10) cm^(2) s^(−1),proving Co_(2)VO_(4) a promising anode in fast-charging LIBs.A hexagonal porous Co2VO4 nanodisk(PCVO ND)structure is designed accordingly,featuring a high specific surface area of 74.57 m^(2) g^(−1) and numerous pores with a pore size of 14 *** unique structure succeeds in enhancing Li^(+) and electron transfer,leading to superior fast-charging performance than current commercial *** a result,the PCVO ND shows a high initial reversible capacity of 911.0 mAh g^(−1) at 0.4 C,excellent fast-charging capacity(344.3 mAh g^(−1) at 10 C for 1000 cycles),outstanding long-term cycling stability(only 0.024% capacity loss per cycle at 10 C for 1000 cycles),confirming the commercial feasibility of PCVO ND in fast-charging LIBs.