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Title: Recent Advances in Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction: Scale-up Synthesis Structure and Activity of Pt Shells on Pd Cores

Abstract

We have established a scale-up synthesis method to produce gram-quantities of Pt monolayer electrocatalysts. The core-shell structure of the Pt/Pd/C electrocatalyst has been verified using the HAADF-STEM Z-contrast images, STEM/EELS, and STEM/EDS line profile analysis. The atomic structure of this electrocatalyst and formation of a Pt monolayer on Pd nanoparticle surfaces were examined using in situ EXAFS. The Pt mass activity of the Pt/Pd/C electrocatalyst for ORR is considerably higher than that of commercial Pt/C electrocatalysts. The results with Pt monolayer electrocatalysts may significantly impact science of electrocatalysis and fuel-cell technology, as they have demonstrated an exceptionally effective way of using Pt that can resolve problems of other approaches, including electrocatalysts inadequate activity and high Pt content.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1042936
Report Number(s):
BNL-93704-2010-JA
Journal ID: ISSN 0013-4686; ELCAAV; TRN: US201212%%1210
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Electrochimica Acta
Additional Journal Information:
Journal Volume: 55; Journal Issue: 8; Journal ID: ISSN 0013-4686
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; ELECTROCATALYSTS; FUEL CELLS; OXYGEN; PLATINUM; SYNTHESIS; PEMFC; oxygen reduction reaction; core-shell nanoparticles

Citation Formats

Sasaki, K, Wang, J X, Naohara, H, Marinkovic, N, More, K, Inada, H, and Adzic, R R. Recent Advances in Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction: Scale-up Synthesis Structure and Activity of Pt Shells on Pd Cores. United States: N. p., 2010. Web. doi:10.1016/j.electacta.2009.11.106.
Sasaki, K, Wang, J X, Naohara, H, Marinkovic, N, More, K, Inada, H, & Adzic, R R. Recent Advances in Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction: Scale-up Synthesis Structure and Activity of Pt Shells on Pd Cores. United States. doi:10.1016/j.electacta.2009.11.106.
Sasaki, K, Wang, J X, Naohara, H, Marinkovic, N, More, K, Inada, H, and Adzic, R R. Mon . "Recent Advances in Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction: Scale-up Synthesis Structure and Activity of Pt Shells on Pd Cores". United States. doi:10.1016/j.electacta.2009.11.106.
@article{osti_1042936,
title = {Recent Advances in Platinum Monolayer Electrocatalysts for Oxygen Reduction Reaction: Scale-up Synthesis Structure and Activity of Pt Shells on Pd Cores},
author = {Sasaki, K and Wang, J X and Naohara, H and Marinkovic, N and More, K and Inada, H and Adzic, R R},
abstractNote = {We have established a scale-up synthesis method to produce gram-quantities of Pt monolayer electrocatalysts. The core-shell structure of the Pt/Pd/C electrocatalyst has been verified using the HAADF-STEM Z-contrast images, STEM/EELS, and STEM/EDS line profile analysis. The atomic structure of this electrocatalyst and formation of a Pt monolayer on Pd nanoparticle surfaces were examined using in situ EXAFS. The Pt mass activity of the Pt/Pd/C electrocatalyst for ORR is considerably higher than that of commercial Pt/C electrocatalysts. The results with Pt monolayer electrocatalysts may significantly impact science of electrocatalysis and fuel-cell technology, as they have demonstrated an exceptionally effective way of using Pt that can resolve problems of other approaches, including electrocatalysts inadequate activity and high Pt content.},
doi = {10.1016/j.electacta.2009.11.106},
journal = {Electrochimica Acta},
issn = {0013-4686},
number = 8,
volume = 55,
place = {United States},
year = {2010},
month = {3}
}