Hyperporous-Carbon-Supported Nonprecious Metal Electrocatalysts for the Oxygen Reduction Reaction.

Authors :: Zhai TL
Xuan C
Xu J
Ban L
Cheng Z
Wang S
Wang D
Tan B
Zhang C
Source :: Chemistry, an Asian journal [Chem Asian J] 2018 Sep 17; Vol. 13 (18), pp. 2671-2676. Date of Electronic Publication: 2018 Aug 01.
Publication Year :: 2018
Abstract: Highly porous carbonaceous nonprecious metal catalysts for the oxygen reduction reaction are prepared by carbonization of low-cost metalloporphyrin-based hyper-crosslinked polymers (MPH-X). With high surface area (2768 m <superscript>2</superscript> g <superscript>-1</superscript> ), hierarchical porous structure, and high metal loading (9.97 wt %), the obtained hyperporous carbon MPH-Fe/C catalyst exhibits high oxygen reduction reaction (ORR) activity with a half-wave potential (0.816 V) that is comparable to the 0.819 V of commercial Pt/C. Stability tests reveal that MPH-Fe/C also exhibits outstanding long-term durability and methanol tolerance. Our findings may offer an alternative approach to produce nonprecious metal ORR catalysts on a large scale owing to the low-cost MPH-X precursors with diverse metal types.<br /> (© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

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