Electrolyte Concentration Regulation Boosting Zinc Storage Stability of High-Capacity K0.486V2O5 Cathode for Bendable Quasi-Solid-State Zinc Ion Batteries

Nano-Micro Letters

Shuailei Liu¹  Wencong Liu¹  Yao Chen¹  Qiuyue Gui¹  Wenyi Liu¹  Jinping Liu²  Zuoqi Hu³  Yuanyuan Li³  Deliang Ba⁴  Linpo Li⁴ 

[1] School of Chemistry, Chemical Engineering and Life Science, and State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, People’s Republic of China;School of Chemistry, Chemical Engineering and Life Science, and State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, People’s Republic of China;Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, 150025, Harbin, People’s Republic of China;School of Optical and Electronic Information, Huazhong University of Science and Technology, 430074, Wuhan, People’s Republic of China;School of Optical and Electronic Information, Huazhong University of Science and Technology, 430074, Wuhan, People’s Republic of China;School of Chemistry, Chemical Engineering and Life Science, and State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, People’s Republic of China;

关键词: Electrolyte concentration regulation;    Quasi-solid-state Zn ion battery;    KVO;    Large interlayer spacing;    Cycling stability;   

DOI  :  10.1007/s40820-020-00554-7

来源: Springer

【 摘 要 】

tsModerate-concentration ZnCl2 (15 m) was found to be effective for suppressing the dissolution of vanadate cathode, which was more stable and had 4 times higher ionic conductivity than 30 m “water-in-salt” electrolyte.K0.486V2O5 with huge interlayer space of ~ 0.95 nm was chosen for the first time to assemble aqueous Zn ion batteries, giving rise to excellent rate performance and high energy and power densities.A novel sodium carboxymethyl cellulose-15 m ZnCl2 hydrogel electrolyte with high ionic conductivity of 10.08 mS cm−1 was designed, enabling a bendable Zn ion battery with outstanding resistance to temperature and pressure.

【 授权许可】

CC BY