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Activating and Stabilizing a Reversible four Electron Redox Reaction of I-/I+ for Aqueous Zn-Iodine Battery.
Wang, Chenggang; Ji, Xiaoxing; Liang, Jianing; Zhao, Shunshun; Zhang, Xixi; Qu, Guangmeng; Shao, Wenfeng; Li, Chuanlin; Zhao, Gang; Xu, Xijin; Li, Huiqiao.
Afiliación
  • Wang C; School of Physics and Technology, University of Jinan, Jinan, 250022, China.
  • Ji X; School of Physics and Technology, University of Jinan, Jinan, 250022, China.
  • Liang J; State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, P. R. China.
  • Zhao S; State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology of Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
  • Zhang X; School of Physics and Technology, University of Jinan, Jinan, 250022, China.
  • Qu G; School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.
  • Shao W; School of Physics and Technology, University of Jinan, Jinan, 250022, China.
  • Li C; School of Physics and Technology, University of Jinan, Jinan, 250022, China.
  • Zhao G; School of Physics and Technology, University of Jinan, Jinan, 250022, China.
  • Xu X; School of Physics and Technology, University of Jinan, Jinan, 250022, China.
  • Li H; State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, P. R. China.
Angew Chem Int Ed Engl ; 63(25): e202403187, 2024 Jun 17.
Article en En | MEDLINE | ID: mdl-38501218
ABSTRACT
Low capacity and poor cycle stability greatly inhibit the development of zinc-iodine batteries. Herein, a high-performance Zn-iodine battery has been reached by designing and optimizing both electrode and electrolyte. The Br- is introduced as the activator to trigger I+, and coupled with I+ forming interhalogen to stabilize I+ to achieve a four-electron reaction, which greatly promotes the capacity. And the Ni-Fe-I LDH nanoflowers serve as the confinement host to enable the reactions of I-/I+ occurring in the layer due to the spacious and stable interlayer spacing of Ni-Fe-I LDH, which effectively suppresses the iodine-species shuttle ensuring high cycling stability. As a result, the electrochemical performance is greatly enhanced, especially in specific capacity (as high as 350 mAh g-1 at 1 A g-1 far higher than two-electron transfer Zn-iodine batteries) and cycling performance (94.6 % capacity retention after 10000 cycles). This strategy provides a new way to realize high capacity and long-term stability of Zn-iodine batteries.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania