Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts

Shaun Alia; Kenneth Neyerlin; Bryan Pivovar; Svitlana Pylypenko; Shyam Kocha

doi:10.1149/2.0231512jes

Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts

Shaun Alia, Kenneth Neyerlin, Bryan Pivovar, Svitlana Pylypenko, Shyam Kocha

Chemistry and Nanoscience

Colorado School of Mines

Research output: Contribution to journal › Article › peer-review

19 Scopus Citations

Abstract

Platinum (Pt) nickel (Ni) nanowires (PtNiNWs) are investigated 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. The 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.

Original language	American English
Pages (from-to)	F1299-F1304
Journal	Journal of the Electrochemical Society
Volume	162
Issue number	12
DOIs	https://doi.org/10.1149/2.0231512jes https://doi.org/10.1149/2.0231512jes
State	Published - 2015

Bibliographical note

Publisher Copyright:
© The Author(s) 2015.

NREL Publication Number

NREL/JA-5900-65338

Keywords

direct methanol fuel cells
methanol oxidation
nanostructures
platinum nickel

Access to Document

Cite this

@article{3667e3368b5c4cbd8a705a8fcfa6c120,

title = "Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts",

abstract = "Platinum (Pt) nickel (Ni) nanowires (PtNiNWs) are investigated 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. The 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.",

keywords = "direct methanol fuel cells, methanol oxidation, nanostructures, platinum nickel",

author = "Shaun Alia and Kenneth Neyerlin and Bryan Pivovar and Svitlana Pylypenko and Shyam Kocha",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2015.",

year = "2015",

doi = "10.1149/2.0231512jes",

language = "American English",

volume = "162",

pages = "F1299--F1304",

journal = "Journal of the Electrochemical Society",

issn = "0013-4651",

publisher = "Institute of Physics",

number = "12",

}

TY - JOUR

T1 - Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts

AU - Alia, Shaun

AU - Neyerlin, Kenneth

AU - Pivovar, Bryan

AU - Pylypenko, Svitlana

AU - Kocha, Shyam

N1 - Publisher Copyright: © The Author(s) 2015.

PY - 2015

Y1 - 2015

N2 - Platinum (Pt) nickel (Ni) nanowires (PtNiNWs) are investigated 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. The 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.

AB - Platinum (Pt) nickel (Ni) nanowires (PtNiNWs) are investigated 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. The 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.

KW - direct methanol fuel cells

KW - methanol oxidation

KW - nanostructures

KW - platinum nickel

UR - http://www.scopus.com/inward/record.url?scp=84942627499&partnerID=8YFLogxK

U2 - 10.1149/2.0231512jes

DO - 10.1149/2.0231512jes

M3 - Article

AN - SCOPUS:84942627499

SN - 0013-4651

VL - 162

SP - F1299-F1304

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 12

ER -

Platinum Nickel Nanowires as Methanol Oxidation Electrocatalysts

Abstract

Bibliographical note

NREL Publication Number

Keywords

Access to Document

Other files and links

Fingerprint

Cite this