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Interfacial Engineering of Na3V2(PO4)2O2F Cathode for Low-Temperature (-40 °C) Sodium-Ion Batteries.
Xu, Shitan; Yao, Kaitong; Yang, Donghua; Chen, Dong; Lin, Chaohui; Liu, Chuanbang; Wu, Hebin; Zeng, Jingling; Liu, Lin; Zheng, Yun; Rui, Xianhong.
Afiliación
  • Xu S; School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
  • Yao K; School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
  • Yang D; School of Mechanical and Electrical Engineering, Shandong Polytechnic College, Jining 272067, China.
  • Chen D; School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
  • Lin C; State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China.
  • Liu C; Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China.
  • Wu H; State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China.
  • Zeng J; State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment, Guangdong University of Technology, Guangzhou 510006, China.
  • Liu L; School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
  • Zheng Y; Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China.
  • Rui X; School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
ACS Appl Mater Interfaces ; 2023 Mar 08.
Article en En | MEDLINE | ID: mdl-36884346
Na3V2(PO4)2O2F (NVPOF) is considered a promising cathode material for sodium-ion batteries (SIBs) on account of its attractive electrochemical properties such as high theoretical capacity, stable structure, and high working platform. Nevertheless, the inevitable interface problems like sluggish interfacial electrochemical reaction kinetics and poor interfacial ion storage capacity seriously hinder its application. Construction of chemical bonding is a highly effective way to solve interface problems. Herein, NVPOF with interfacial V-F-C bonding (CB-NVPOF) is developed. The CB-NVPOF cathode exhibits high rate capability (65 mA h g-1 at 40C) and long-term cycling stability (a capacity retention of 77% after 2000 cycles at 20C). Furthermore, it shows impressive electrochemical performance at temperatures as low as -40 °C, delivering a capacity of 56 mA h g-1 at 10C and a capacity retention of ∼80% after 500 cycles at 2C. The interfacial V-F-C bond engineering significantly advances the electronic conductivity, Na+ diffusion, as well as interface compatibility at -40 °C. This study provides a novel idea for improving the electrochemical performance of NVPOF-based cathodes for SIBs aiming for low-temperature applications.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos