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. 2018 Jan 26;57(5):1204-1208.
doi: 10.1002/anie.201709597. Epub 2018 Jan 8.

The Solid-Phase Synthesis of an Fe-N-C Electrocatalyst for High-Power Proton-Exchange Membrane Fuel Cells

Qingtao Liu  1 , Xiaofang Liu  1 , Lirong Zheng  2 , Jianglan Shui  1
Affiliations

The Solid-Phase Synthesis of an Fe-N-C Electrocatalyst for High-Power Proton-Exchange Membrane Fuel Cells

Qingtao Liu et al. Angew Chem Int Ed Engl. .

Abstract

The environmentally friendly synthesis of highly active Fe-N-C electrocatalysts for proton-exchange membrane fuel cells (PEMFCs) is desirable but remains challenging. A simple and scalable method is presented to fabricate FeII -doped ZIF-8, which can be further pyrolyzed into Fe-N-C with 3 wt % of Fe exclusively in Fe-N4 active moieties. Significantly, this Fe-N-C derived acidic PEMFC exhibits an unprecedented current density of 1.65 A cm-2 at 0.6 V and the highest power density of 1.14 W cm-2 compared with previously reported NPMCs. The excellent PEMFC performance can be attributed to the densely and atomically dispersed Fe-N4 active moieties on the small and uniform catalyst nanoparticles.

Keywords: electrocatalysis; fuel cells; iron; oxygen reduction reaction; solid-phase synthesis.

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