Porous Co2VO4 Nanodisk as a High-Energy and Fast-Charging Anode for Lithium-Ion Batteries

Nano-Micro Letters

Chunming Niu¹  Zhenyu Wang²  Shupei Liu³  Xiang Liu³  Han Yang³  Fei Gao³  Cong Wang³  Di Wang³  Peng Xu³  Yusong Zhu³  Zhoulu Wang³  Jinghui Ren³  Yutong Wu³  Yi Zhang³  Decheng Zhao³ 

[1] Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, 710054, Xi’an, People’s Republic of China;Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi’an Jiaotong University, 710054, Xi’an, People’s Republic of China;Department of Computational Materials Design, Max-Planck-Insitut Für Eisenforschung GmbH, Max-Planck-Straße 1, 40237, Düsseldorf, Germany;School of Energy Science and Engineering, Nanjing Tech University, 211816, Nanjing, People’s Republic of China;

关键词: Lithium-ion batteries;    Anode;    Fast-charging;    High-energy;    Cobalt vanadate oxide;   

DOI  :  10.1007/s40820-021-00758-5

来源: Springer

【 摘 要 】

tsThe Li+ diffusion coefficient of Co2VO4 is evaluated by theoretical calculation to be as high as 3.15 × 10–10 cm2 s−1, theoretically proving Co2VO4 a promising anode in fast-charging lithium-ion batteries.A hexagonal porous Co2VO4 nanodisk (PCVO ND) structure is designed, featuring a high specific surface area of 74.57 m2 g−1 and numerous pores with a pore size of 14 nm.The PCVO ND shows excellent fast-charging performance (a high average capacity of 344.3 mAh g−1 at 10 C for 1000 cycles with only 0.024% capacity loss per cycle for 1000 cycles).

【 授权许可】

CC BY