A new mixed-matrix membrane for DMFCs

Mohanapriya, S and Bhat, SD and Sahu, AK and Pitchumani, S and Sridhar, P and Shukla, AK (2009) A new mixed-matrix membrane for DMFCs. In: Energy And Environmental Science, 2 (11). pp. 1210-1216.

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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/cm(2) at a load current-density of 210 mA/cm(2) with a lower methanol cross-over than that observed for a DMFC operating with a Nafion membrane electrolyte.

Item Type:	Journal Article
Publication:	Energy And Environmental Science
Publisher:	Royal Society of Chemistry
Additional Information:	Copyright for this article belongs to Royal Society of Chemistry.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	07 Dec 2009 07:10
Last Modified:	19 Sep 2010 05:52
URI:	http://eprints.iisc.ac.in/id/eprint/24960

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