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Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0231512jes· OSTI ID:1225971
 [1];  [2];  [1];  [1];  [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Colorado School of Mines, Golden, CO (United States)

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.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1225971
Report Number(s):
NREL/JA--5900-65338
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 12 Vol. 162; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Catalytic activities for methanol oxidation on ultrathin CuPt 3 wavy nanowires with/without smart polymer journal January 2016
TePbPt alloy nanotube as electrocatalyst with enhanced performance towards methanol oxidation reaction journal January 2018
Synthesis of Pt@TiO 2 nanocomposite electrocatalysts for enhanced methanol oxidation by hydrophobic nanoreactor templating journal January 2019

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