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Title: Pt monolayer shell on nitrided alloy core — A path to highly stable oxygen reduction catalyst

Journal Article · · Catalysts
DOI:https://doi.org/10.3390/catal5031321· OSTI ID:1213365
 [1];  [2];  [2];  [2];  [3];  [3];  [4];  [2];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Chinese Academy of Sciences (CAS), Beijing (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Korea Institute of Energy Research, Daejeon (Korea)
  4. 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
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Cited By (5)

Core–Shell-Structured Low-Platinum Electrocatalysts for Fuel Cell Applications journal July 2018
Preparation of Ni@Pt core@shell conformal nanofibre oxygen reduction electrocatalysts via microwave-assisted galvanic displacement journal January 2019
Pt Monolayers on Electrodeposited Nanoparticles of Different Compositions for Ammonia Electro-Oxidation journal December 2018
Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction journal December 2016
Electrocatalysts Prepared by Galvanic Replacement journal March 2017