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The Solid‐Phase Synthesis of an Fe‐N‐C Electrocatalyst for High‐Power Proton‐Exchange Membrane Fuel Cells
Author(s) -
Liu Qingtao,
Liu Xiaofang,
Zheng Lirong,
Shui Jianglan
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201709597
Subject(s) - proton exchange membrane fuel cell , electrocatalyst , catalysis , chemical engineering , fuel cells , pyrolysis , materials science , membrane , phase (matter) , nanoparticle , proton , power density , nanotechnology , chemistry , electrochemistry , organic chemistry , power (physics) , electrode , biochemistry , physics , quantum mechanics , engineering
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 Fe II ‐doped ZIF‐8, which can be further pyrolyzed into Fe‐N‐C with 3 wt % of Fe exclusively in Fe‐N 4 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‐N 4 active moieties on the small and uniform catalyst nanoparticles.