Mohanapriya, S. and Sridhar, P. and Pitchumani, S. and Shukla, A.K. (2010) Influence of Surface Pre-treatment of MWNTs Support on PEFC Performance. ECS Transactions, 28 (17). pp. 43-53. ISSN 1938-5862

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Abstract

The influence of surface characteristics of multi-walled carbon nanotubes (MWNTs) support on the catalytic performance of PEFC electrodes is investigated by using oxidized and nonoxidized MWNTs as the supports for platinum. The defect-free morphology, high electrical conductivity and favorable pore-size distribution of non-oxidized MWNTs ameliorate catalytic activity and electrochemical stability of platinum. Physico-chemical properties of oxidized and non-oxidized MWNTs and the respective catalysts are studied by BET surface-area, XRD, XPS and TEM measurements. Electrochemical stability of MWNTssupported platinum as PEFC electrodes is assessed using potential cycling and potentiostatic techniques. Owing to the higher corrosion-resistance, platinum on non-oxidized MWNTs show lower loss in electrochemical surface area (ESA) and also exhibit 22% lower corrosion current than oxidized MWNTs.

Item Type:	Article
Uncontrolled Keywords:	carbon nanotubes; fuel cells
Subjects:	Fuel Cells Nanotechnology
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	18 Jan 2012 03:50
Last Modified:	18 Jan 2012 03:50
URI:	http://cecri.csircentral.net/id/eprint/214

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