Durability of Pt/C and Pt/MC-PEDOT catalysts under simulated start-stop cycles in polymer electrolyte fuel cells

Tintula, KK and Jalajakshi, A and Sahu, AK and Pitchumani, S and Sridhar, P and Shukla, AK (2013) Durability of Pt/C and Pt/MC-PEDOT catalysts under simulated start-stop cycles in polymer electrolyte fuel cells. In: Fuel Cells, 13 (2). pp. 158-166.

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Abstract

A composite of mesoporous carbon (MC) with poly(3,4-ethylenedioxythiophene) (PEDOT) is studied as catalyst support for platinum nanoparticles. The durability of commercial Pt/carbon and Pt/MC-PEDOT as cathode catalyst is investigated by invoking air-fuel boundary at the anode side so as to foster carbon corrosion at the cathode side of a polymer electrolyte fuel cell (PEFC). Pt/MC-PEDOT shows higher resistance to carbon corrosion in relation to Pt/C. Electrochemical techniques such as cyclic voltammetry (CV) and impedance measurements are used to evaluate the extent of degradation in the catalyst layer. It is surmised that the resistance of MC-PEDOT as catalyst support toward electrochemical oxidation makes Pt/MC-PEDOT a suitable and stable cathode catalyst for PEFCs.

Item Type:	Journal Article
Publication:	Fuel Cells
Publisher:	WILEY-VCH Verlag GmbH
Additional Information:	Copyright of this article belongs to WILEY-VCH Verlag GmbH.
Keywords:	Carbon Corrosion; Durability; MC-PEDOT Composite; PEFCs; Start-Stop Cycles
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	30 May 2013 11:24
Last Modified:	31 May 2013 05:32
URI:	http://eprints.iisc.ac.in/id/eprint/46602

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