The Solid‐Phase Synthesis of an Fe‐N‐C Electrocatalyst for High‐Power Proton‐Exchange Membrane Fuel Cells |
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| Authors: | Qingtao Liu Prof Xiaofang Liu Dr Lirong Zheng Prof Jianglan Shui |
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| Institution: | 1. School of Materials Science and Engineering, Beihang University, Beijing, China;2. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China |
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| 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. |
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| Keywords: | electrocatalysis fuel cells iron oxygen reduction reaction solid-phase synthesis |
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