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Author:

Wang, Yang (Wang, Yang.) | Chen, Ye (Chen, Ye.) | Wang, Ziwei (Wang, Ziwei.) | Li, Ping (Li, Ping.) | Zhao, Jianyun (Zhao, Jianyun.) | Zhao, Hongyang (Zhao, Hongyang.) | Li, Dan (Li, Dan.) | He, Tianxi (He, Tianxi.) | Wei, Yuantao (Wei, Yuantao.) | Su, Yaqiong (Su, Yaqiong.) | Xiao, Chunhui (Xiao, Chunhui.)

Indexed by:

EI SCIE Scopus Engineering Village

Abstract:

Developing non-precious metal-based catalysts as the substitution of precious catalysts (Pt/C) in oxygen reduction reaction (ORR) is crucial for energy devices. Herein, a template and organic solvent-free method was adopted to synthesize Fe, B, and N doped nanoflake-like carbon materials (Fe/B/N–C) by pyrolysis of monoclinic ZIF-8 coated with iron precursors and boric acid. Benefiting from introducing B into Fe–N–C, the regulated electron cloud density of Fe-Nx sites enhance the charge transfer and promotes the ORR process. The as-synthesized Fe/B/N–C electrocatalyst shows excellent ORR activity of a half-wave potential (0.90 V vs 0.87 V of Pt/C), together with superior long-term stability (95.5% current density retention after 27 h) in alkaline media and is even comparable to the commercial Pt/C catalyst (with a half-wave potential of 0.74 V vs 0.82 V of Pt/C) in an acidic electrolyte. A Zn-air battery assembled with Fe/B/N–C as ORR catalyst delivers a higher open-circuit potential (1.47 V), specific capacity (759.9 mA h g−1Zn at 10 mA cm−2), peak power density (62 mW cm−2), as well as excellent durability (5 mA cm−2 for more than 160 h) compared to those with commercial Pt/C. This work provides an effective strategy to construct B doped Fe–N–C materials as nonprecious ORR catalyst. Theoretical calculations indicate that introduction of B could induce Fe-Nx species electronic configuration and is favorable for activation of OH∗ intermediates to promote ORR process. © 2022

Keyword:

Boric acid Boron Carbon Charge transfer Doping (additives) Electrocatalysts Electrolytes Electrolytic reduction Iron compounds Oxygen Zinc air batteries Zinc compounds

Author Community:

  • [ 1 ] [Wang, Yang]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 2 ] [Chen, Ye]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 3 ] [Wang, Ziwei]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 4 ] [Li, Ping]CNNC Shaanxi Uranium Enrichment Co., Ltd., Hanzhong, China
  • [ 5 ] [Zhao, Jianyun]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 6 ] [Zhao, Hongyang]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 7 ] [Li, Dan]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 8 ] [He, Tianxi]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 9 ] [Wei, Yuantao]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 10 ] [Su, Yaqiong]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China
  • [ 11 ] [Xiao, Chunhui]Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xianning West Road, Xi'an; 710049, China

Reprint Author's Address:

  • C. Xiao;;Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an, Xianning West Road, 710049, China;;email: chunhuixiao@xjtu.edu.cn;;

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Source :

International Journal of Hydrogen Energy

ISSN: 0360-3199

Year: 2022

Issue: 43

Volume: 47

Page: 18663-18674

5 . 8 1 6

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:7

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 19

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 7

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