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Cited by 28Fuel Cells and Related MaterialsElectrocatalysts for Energy ConversionCatalytic Processes in Materials Science

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A Durable Graphitic-Carbon Support for Pt and Pt3Co Cathode Catalysts in Polymer Electrolyte Fuel Cells

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Selvaganesh, S. Vinod, Sridhar, P., Pitchumani, S., Shukla, A. K.·2013·Journal of The Electrochemical Society
DOI 10.1149/2.051301jes
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Abstract

The high efficiency of fuel-cell-powered electric vehicles makes them a potentially viable option for future transportation. Polymer Electrolyte Fuel Cells (PEFCs) are most promising among various fuel cells for electric traction due to their quick start-up and low-temperature operation. In recent years, the performance of PEFCs has reached the acceptable level both for automotive and stationary applications and efforts are now being expended in increasing their durability, which remains a major concern in their commercialization. To make PEFCs meet automotive targets an understanding of the factors affecting the stability of carbon support and platinum catalyst is critical. Alloying platinum (Pt) with first-row transition metals such as cobalt (Co) is reported to facilitate both higher degree of crystallinity and enhanced activity in relation to pristine Pt. But a major challenge for the application of Pt-transition metal alloys in PEFCs is to improve the stability of these binary catalysts. Dissolution of the non-precious metal in the acidic environment could alleviate the activity of the catalysts and hence cell performance. The use of graphitic carbon as cathode-catalyst support enhances the long-term stability of Pt and its alloys in relation to non-graphitic carbon as the former exhibits higher resistance to carbon corrosion in relation to the latter in PEFC cathodes during accelerated-stress test (AST). Changes in electrochemical surface area (ESA), cell performance and charge-transfer resistance are monitored during AST through cyclic voltammetry, cell polarization and impedance measurements, respectively. Studies on catalytic electrodes with X-ray diffraction, Raman spectroscopy and transmission electron microscopy reflect that graphitic carbon-support resists carbon corrosion and helps mitigating aggregation of Pt and Pt 3 Co catalyst particles.

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Metadata

Authors
Selvaganesh, S. V., Sridhar, P., Pitchumani, S., & Shukla, A. K.
Affiliations
  • Central Electrochemical Research Institute (IN)
  • Indian Institute of Science Bangalore (IN)
ORCID
Venue
Journal of The Electrochemical Society
Publisher
The Electrochemical Society
Published
2012-11-08
Volume
160
Issue
1
Pages
F49-F59
ISSN
  • 0013-4651 (ISSN-L)
  • 1945-7111
DOI
10.1149/2.051301jes
OpenAlex
W2017256139
Cited by
28
References
2
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 1 · 2022: 1 · 2021: 4 · 2020: 3 · 2019: 2 · 2018: 1 · 2017: 1 · 2016: 3 · 2015: 1 · 2014: 4 · 2013: 1
FWCI
1.23
Type
journal article
Language
en
Open access
Locations
  • Journal of The Electrochemical Society (publishedVersion)
  • NOT FOUND REPOSITORY (Indian Institute of Science Bangalore) (acceptedVersion)
Funders
  • Neurosurgery Research and Education Foundation
  • Ministry of New and Renewable Energy India
  • Central ElectroChemical Research Institute
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
Keywords
proton exchange membrane fuel cells, graphitic carbon support, platinum catalysts, cathode catalysts, catalyst stability, carbon corrosion, accelerated stress testing, electrochemically active surface area, charge transfer resistance

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