Multiscale structural engineering of atomically dispersed FeN4 electrocatalyst for proton exchange membrane fuel cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
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Author(s)

  • Ruguang Wang
  • Yuanyuan Yang
  • Yang Zhao
  • Liujing Yang
  • Pengfei Yin
  • And 2 others
  • Jing Mao
  • Tao Ling

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)629-635
Journal / PublicationJournal of Energy Chemistry
Volume58
Online published9 Nov 2020
Publication statusPublished - Jul 2021

Abstract

Atomically dispersed iron–nitrogen–carbon (Fe–N–C) catalysts have emerged as the most promising alternative to the expensive Pt-based catalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs), however suffer from low site density of active Fe-N4 moiety and limited mass transport during the catalytic reaction. To address these challenges, we report a three-dimensional (3D) metal–organic frameworks (MOF)-derived Fe–N–C single-atom catalyst. In this well-designed Fe–N–C catalyst, the micro-scale interconnected skeleton, the nano-scale ordered pores and the atomic-scale abundant carbon edge defects inside the skeleton significantly enhance the site density of active Fe-N4 moiety, thus improving the Fe utilization in the final catalyst. Moreover, the combination of the above mentioned micro- and nano-scale structures greatly facilitates the mass transport in the 3D Fe–N–C catalyst. Therefore, the multiscale engineered Fe–N–C single-atom catalyst achieves excellent ORR performance under acidic condition and affords a significantly enhanced current density and power density in PEMFC. Our findings may open new opportunities for the rational design of Fe–N–C catalysts through multiscale structural engineering.

Research Area(s)

  • Fe-N4, Fe–N–C catalyst, Oxygen reduction reaction, Proton exchange membrane fuel cells, Single-atom catalyst

Citation Format(s)

Multiscale structural engineering of atomically dispersed FeN4 electrocatalyst for proton exchange membrane fuel cells. / Wang, Ruguang; Yang, Yuanyuan; Zhao, Yang; Yang, Liujing; Yin, Pengfei; Mao, Jing; Ling, Tao.

In: Journal of Energy Chemistry, Vol. 58, 07.2021, p. 629-635.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review