Jump to main content
Jump to site search

Issue 18, 2017
Previous Article Next Article

Out-of-plane FeII–N4 moiety modified Fe–N co-doped porous carbons as high-performance electrocatalysts for the oxygen reduction reaction

Author affiliations

Abstract

Exploring high-performance iron and nitrogen co-doped carbon (Fe–N–C) electrocatalysts with desirable active sites toward the oxygen reduction reaction (ORR) is extremely important for future applications of fuel cells and metal–air batteries. Herein, we demonstrate a facile and effective strategy for the synthesis of high-performance Fe–N–C electrocatalysts by pyrolyzing a physical mixture of conventional carbon black (Black Pearls 2000, BP2000) and Hemin followed by a post-treatment procedure including acid-washing and heat-treatment. The resultant Fe–N–C electrocatalysts possessed numerous out-of-plane FeII–N4 moieties (D1 sites) uniformly distributed in the porous carbon matrix, and a well-defined micro/mesoporous structure that is expected to significantly improve the ORR activity in both alkaline and acidic electrolytes. In an alkaline electrolyte, the Fe–N–C electrocatalyst exhibited a remarkable ORR activity with a high onset potential of 0.942 V and a half-wave potential of 0.848 V, which were 9 mV and 12 mV more positive than those of the commercial Pt/C, respectively, while its half-wave potential was 0.73 V, only 60 mV less than that of Pt/C in an acidic electrolyte. Furthermore, the Fe–N–C electrocatalyst also demonstrated better electrochemical durability and methanol tolerance in comparison with Pt/C in both alkaline and acidic electrolytes. This work opens a new avenue for the rational design and synthesis of highly active and durable TM–N–C electrocatalysts towards ORR.

Graphical abstract: Out-of-plane FeII–N4 moiety modified Fe–N co-doped porous carbons as high-performance electrocatalysts for the oxygen reduction reaction

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Jun 2017, accepted on 01 Aug 2017 and first published on 16 Aug 2017


Article type: Paper
DOI: 10.1039/C7CY01290J
Citation: Catal. Sci. Technol., 2017,7, 4017-4023
  •   Request permissions

    Out-of-plane FeII–N4 moiety modified Fe–N co-doped porous carbons as high-performance electrocatalysts for the oxygen reduction reaction

    Z. Qian, Z. Hu, Z. Zhang, Z. Li, M. Dou and F. Wang, Catal. Sci. Technol., 2017, 7, 4017
    DOI: 10.1039/C7CY01290J

Search articles by author

Spotlight

Advertisements