Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- 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 Laboratory (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, Vol. 162, Issue 12; Related Information: Journal of the Electrochemical Society; ISSN 0013-4651
- Publisher:
- The Electrochemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Catalytic activities for methanol oxidation on ultrathin CuPt 3 wavy nanowires with/without smart polymer
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TePbPt alloy nanotube as electrocatalyst with enhanced performance towards methanol oxidation reaction
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journal | January 2018 |
Synthesis of Pt@TiO 2 nanocomposite electrocatalysts for enhanced methanol oxidation by hydrophobic nanoreactor templating
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journal | January 2019 |
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