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author:

Wang, H. (Wang, H..) [1] | Kong, Z. (Kong, Z..) [2] | Wang, M. (Wang, M..) [3] | Huang, B. (Huang, B..) [4] | Guan, L. (Guan, L..) [5]

Indexed by:

Scopus

Abstract:

Manganese and nitrogen co-doped porous carbon (Mn-N-C) are proposed as one of the most up-and-coming non-precious metal electrocatalysts to substitute Pt-based in the oxygen reduction reaction (ORR). Herein, we chose metal triazole frameworks as carbon substrate with hierarchical porosity for trapping and anchoring Mn-containing gaseous species by a mild one-step pyrolysis method. The optimized Mn-N-C electrocatalyst with a large metal content of 1.71 wt% and a volume ratio of 0.86 mesopores pore delivers a superior ORR activity with a half-wave potential (E 1/2) of 0.92 V in 0.1 M KOH and 0.78 V in 0.1 M HClO4. Moreover, the modified Mn-N-C catalyst showed superior potential cyclic stability. The E 1/2 remained unchanged in 0.1 M KOH and only lost 6 mV in 0.1 M HClO4 after 5000 cycles. When applied as the cathode catalyst in Zn-air battery, it exhibited a maximum peak power density of 176 mW cm−2, demonstrating great potential as a usable ORR catalyst in practical devices. © 2023 IOP Publishing Ltd.

Keyword:

hierarchical porosity metal-triazole framework Mn-N-C catalyst oxygen reduction reaction

Community:

  • [ 1 ] [Wang, H.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 2 ] [Wang, H.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 3 ] [Kong, Z.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 4 ] [Kong, Z.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China
  • [ 5 ] [Wang, M.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 6 ] [Huang, B.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 7 ] [Guan, L.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fujian, Fuzhou, 350002, China
  • [ 8 ] [Guan, L.]College of Chemistry, Fuzhou University, Fuzhou, 350108, China

Reprint 's Address:

  • [Guan, L.]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian, China

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Related Keywords:

Source :

Nanotechnology

ISSN: 0957-4484

Year: 2023

Issue: 14

Volume: 34

2 . 9

JCR@2023

2 . 9 0 0

JCR@2023

ESI HC Threshold:49

JCR Journal Grade:2

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 2

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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