Fe and N Codoped Mesoporous Carbon Nanofiber as a Nonprecious Metal Catalyst for Oxygen Reduction Reaction and a Durable Support for Pt Nanoparticles

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Cost reduction and long-term durability are crucial issues for the commercialization of polymer electrolyte membrane fuel cells. To accomplish these goals, herein, we report an electrospun iron and nitrogen codoped mesoporous carbon nanofiber (Fe-N-MCNF) for use as both a low-cost nonprecious metal catalyst and a durable support of platinum nanoparticles. Silica nanoparticles and polyvinyl acetate are used together as porogens to create mesopores. As a synergetic effect of these two types of porogens, numerous mesopores are successfully formed inside of the carbon nanofibers. The highly mesoporous structure increases the specific surface area and improves the diffusion kinetics of the reactants, leading to an increase in the effective surface area of the Fe-N-MCNFs for electrochemical reactions. Therefore, the Fe-N-MCNFs can have high oxygen reduction reaction activity alone in an acidic solution and the ability to provide a large surface area for platinum nanoparticles as a support. The platinum nanoparticles on the Fe-N-MCNFs are highly stable under an oxidative potential condition of fuel cells due to the high corrosion resistance of the graphitized carbon structure. This work demonstrates that Fe-N-MCNF can be utilized as both a low-cost catalyst and a durable support in practical fuel cell applications.
Publisher
AMER CHEMICAL SOC
Issue Date
2019-10
Language
English
Article Type
Article
Citation

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v.7, no.20, pp.17544 - 17552

ISSN
2168-0485
DOI
10.1021/acssuschemeng.9b05118
URI
http://hdl.handle.net/10203/268315
Appears in Collection
MS-Journal Papers(저널논문)
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