Pt monolayer shell on nitrided alloy core — A path to highly stable oxygen reduction catalyst
- Brookhaven National Lab. (BNL), Upton, NY (United States); Chinese Academy of Sciences (CAS), Beijing (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Korea Institute of Energy Research, Daejeon (Korea)
- Chinese Academy of Sciences (CAS), Beijing (China)
The inadequate activity and stability of Pt as a cathode catalyst under the severe operation conditions are the critical problems facing the application of the proton exchange membrane fuel cell (PEMFC). Here we report on a novel route to synthesize highly active and stable oxygen reduction catalysts by depositing Pt monolayer on a nitrided alloy core. The prepared PtMLPdNiN/C catalyst retains 89% of the initial electrochemical surface area after 50,000 cycles between potentials 0.6 and 1.0 V. By correlating electron energy-loss spectroscopy and X-ray absorption spectroscopy analyses with electrochemical measurements, we found that the significant improvement of stability of the PtMLPdNiN/C catalyst is caused by nitrogen doping while reducing the total precious metal loading.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC00112704
- OSTI ID:
- 1213365
- Report Number(s):
- BNL-108200-2015-JA; CATACJ; R&D Project: MA510MAEA; KC0302010
- Journal Information:
- Catalysts, Vol. 5, Issue 3; ISSN 2073-4344
- Publisher:
- MDPICopyright Statement
- Country of Publication:
- United States
- Language:
- English
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journal | January 2019 |
Pt Monolayers on Electrodeposited Nanoparticles of Different Compositions for Ammonia Electro-Oxidation
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journal | December 2018 |
Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction
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journal | December 2016 |
Electrocatalysts Prepared by Galvanic Replacement
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journal | March 2017 |
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