Mohanapriya, S. and Bhat, S.D. and Sahu, AK. and Pitchumani, S. and Sridhar, P. and Shukla, A.K. (2009) A new mixed-matrix membrane for DMFCs. Energy & Environmental Science, 2 (11). pp. 1210-1216. ISSN 1754-5692

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Abstract

A new mixed-matrix membrane based on stabilized phosphotungstic acid (PTA) incorporated to chitosan (CS)-hydroxy ethyl cellulose (HEC) for application in direct methanol fuel cells (DMFCs) is reported. Membranes are characterised using Fourier Transform Spectroscopy (FTIR), Thermo-Gravimetric Analysis (TGA), Scanning Electron Microscopy (SEM) and their mechanical properties are evaluated. The PTA content in the CS-HEC blend and its influence on proton conductivity, water/methanol sorption, and methanol cross-over in the DMFC is studied. The DMFC with 3 wt. % stabilized PTA-CS-HEC mixed-matrix membrane delivers peak power-density of 58 mW/cm2 at a load current-density of 210 mA/cm2 with a lower methanol cross-over than that observed for a DMFC operating with a Nafion membrane electrolyte.

Item Type:	Article
Subjects:	Fuel Cells
Divisions:	UNSPECIFIED
Depositing User:	TTBD CECRI
Date Deposited:	20 Jan 2012 23:33
Last Modified:	05 Mar 2012 10:28
URI:	http://cecri.csircentral.net/id/eprint/351

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