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Highly active nitrogen-phosphorus co-doped carbon fiber@graphite felt electrode for high-performance vanadium redox flow battery.
Chen, Xingrong; Wu, Chang; Lv, Yanrong; Zhang, Shupan; Jiang, Yingqiao; Feng, Zemin; Wang, Ling; Wang, Yinhui; Zhu, Jing; Dai, Lei; He, Zhangxing.
Afiliación
  • Chen X; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
  • Wu C; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
  • Lv Y; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
  • Zhang S; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
  • Jiang Y; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
  • Feng Z; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China. Electronic address: fengzm@ncst.edu.cn.
  • Wang L; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
  • Wang Y; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China. Electronic address: wyh921517@163.com.
  • Zhu J; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China. Electronic address: tszhujing@163.com.
  • Dai L; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
  • He Z; School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
J Colloid Interface Sci ; 677(Pt B): 683-691, 2024 Aug 13.
Article en En | MEDLINE | ID: mdl-39159523
ABSTRACT
Heteroatom-doped electrodes offer promising applications for enhancing the longevity and efficiency of vanadium redox flow battery (VRFB). Herein, we controllably synthesized N, P co-doped graphite fiber electrodes with conductive network structure by introducing protonic acid and combining electrodeposition and high temperature carbonization. H2SO4 and H3PO4 act as auxiliary and dopant, respectively. The synergistic effect between N and P introduces additional defect structures and active sites on the electrodes, thereby enhancing the reaction rate, as confirmed by density functional theory calculations. Furthermore, the conductive network structure of carbon fibers improves electrode-to-electrode connectivity and reduces internal battery resistance. The optimized integration of these strategies enhances VRFB performance significantly. Consequently, the N, P co-doped carbon fiber modified graphite felt electrodes demonstrate remarkably high energy efficiency at 200 mA cm-2, surpassing that of the blank battery by 7.9 %. This integrated approach to in-situ controllable synthesis provides innovative insights for developing high-performance, stable electrodes, thereby contributing to advancements in the field of energy storage.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos