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Title: Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts

Abstract

We investigated platinum(Pt) nickel (Ni) nanowires (PtNiNWs) as methanol oxidation reaction (MOR) catalysts in rotating disk electrode (RDE) half-cells under acidic conditions. Pt-ruthenium (Ru) nanoparticles have long been the state of the art MOR catalyst for direct methanol fuel cells (DMFCs) where Ru provides oxophilic sites, lowering the potential for carbon monoxide oxidation and the MOR onset. Ru, however, is a precious metal that has long term durability concerns. Ni/Ni oxide species offer a potential to replace Ru in MOR electrocatalysis. PtNiNWs were investigated for MOR and oxygen annealing was investigated as a route to improve catalyst performance (mass activity 65% greater) and stability to potential cycling. Our results presented show that PtNiNWs offer significant promise in the area, but also result in Ni ion leaching that is a concern requiring further evaluation in fuel cells.

Authors:
 [1];  [2];  [1];  [1];  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Colorado School of Mines, Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1225971
Report Number(s):
NREL/JA-5900-65338
Journal ID: ISSN 0013-4651
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 162; Journal Issue: 12; Related Information: Journal of the Electrochemical Society; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; direct methanol fuel cells; methanol oxidation; nanostructures; platinum nickel

Citation Formats

Alia, Shaun M., Pylypenko, Svitlana, Neyerlin, Kenneth C., Kocha, Shyam S., and Pivovar, Bryan S.. Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts. United States: N. p., 2015. Web. doi:10.1149/2.0231512jes.
Alia, Shaun M., Pylypenko, Svitlana, Neyerlin, Kenneth C., Kocha, Shyam S., & Pivovar, Bryan S.. Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts. United States. https://doi.org/10.1149/2.0231512jes
Alia, Shaun M., Pylypenko, Svitlana, Neyerlin, Kenneth C., Kocha, Shyam S., and Pivovar, Bryan S.. Thu . "Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts". United States. https://doi.org/10.1149/2.0231512jes. https://www.osti.gov/servlets/purl/1225971.
@article{osti_1225971,
title = {Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts},
author = {Alia, Shaun M. and Pylypenko, Svitlana and Neyerlin, Kenneth C. and Kocha, Shyam S. and Pivovar, Bryan S.},
abstractNote = {We investigated platinum(Pt) nickel (Ni) nanowires (PtNiNWs) as methanol oxidation reaction (MOR) catalysts in rotating disk electrode (RDE) half-cells under acidic conditions. Pt-ruthenium (Ru) nanoparticles have long been the state of the art MOR catalyst for direct methanol fuel cells (DMFCs) where Ru provides oxophilic sites, lowering the potential for carbon monoxide oxidation and the MOR onset. Ru, however, is a precious metal that has long term durability concerns. Ni/Ni oxide species offer a potential to replace Ru in MOR electrocatalysis. PtNiNWs were investigated for MOR and oxygen annealing was investigated as a route to improve catalyst performance (mass activity 65% greater) and stability to potential cycling. Our results presented show that PtNiNWs offer significant promise in the area, but also result in Ni ion leaching that is a concern requiring further evaluation in fuel cells.},
doi = {10.1149/2.0231512jes},
journal = {Journal of the Electrochemical Society},
number = 12,
volume = 162,
place = {United States},
year = {Thu Aug 27 00:00:00 EDT 2015},
month = {Thu Aug 27 00:00:00 EDT 2015}
}

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Works referencing / citing this record:

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