Hierarchically porous carbons as supports for fuel cell electrocatalysts with atomically dispersed Fe-Nx moieties

Tong L, Wang YC, Chen MX, Chen ZQ, Yan QQ, Yang CL, Zhou ZY, Chu SQ, Feng X, Liang HW (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Chemical Science Royal Society of Chemistry

Book Volume: 10

Pages Range: 8236-8240

Journal Issue: 35

DOI: 10.1039/c9sc01154d

Abstract

The development of high-performance non-platinum group metal (non-PGM) catalysts for the oxygen reduction reaction (ORR) is still of significance in promoting the commercialization of proton exchange membrane fuel cells (PEMFCs). In this work, a "hierarchically porous carbon (HPC)-supporting" approach was developed to synthesize highly ORR active Fe-phenanthroline (Fe-phen) derived Fe-Nx-C catalysts. Compared to commercial carbon black supports, utilizing HPCs as carbon supports can not only prevent the formation of inactive iron nanoparticles during pyrolysis but also optimize the porous morphology of the catalysts, which eventually increases the amount of reactant-accessible and atomically dispersed Fe-Nx active sites. The prepared catalyst therefore exhibits a remarkable ORR activity in both half-cells (half-wave potential of 0.80 V in 0.5 M H2SO4) and H2-air PEMFCs (442 mA cm-2 at a working voltage of 0.6 V), making it among the best non-PGM catalysts for PEMFCs.

Involved external institutions

University of Science and Technology of China (USTC) CN China (CN) Xiamen University CN China (CN) Chinese Academy of Sciences (CAS) / 中国科学院 CN China (CN) Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Tong, L., Wang, Y.-C., Chen, M.-X., Chen, Z.-Q., Yan, Q.-Q., Yang, C.-L.,... Liang, H.-W. (2019). Hierarchically porous carbons as supports for fuel cell electrocatalysts with atomically dispersed Fe-Nx moieties. Chemical Science, 10(35), 8236-8240. https://doi.org/10.1039/c9sc01154d

MLA:

Tong, Lei, et al. "Hierarchically porous carbons as supports for fuel cell electrocatalysts with atomically dispersed Fe-Nx moieties." Chemical Science 10.35 (2019): 8236-8240.

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