Abstract
Poly(AAc-co-DMAPMA) membrane (PADMA) is synthesized by free radical aqueous copolymerization of acrylic acid (AAc) and N-3-[dimethylamino)propyl]-methacrylamide (DMAPMA) to check its stability and conductivity. The hydrogel membrane characterized physically to study morphology by SEM, thermal stability by TGA and mechanical stability by measuring compressive strength and ionic conductivity by electrochemical impedance spectroscopy in alkaline as well as in acidic environment at different temperatures. The compression modulus of the hydrogel membrane is 24 kPa at pH = 1.0 and 16 kPa at pH = 7.0, and stable (no fracture) till 72% deformation. The PADMA hydrogel membrane ionic conductivity increased with the increase in temperature and structurally stable up to 190°C. Improvement in ionic conductivity is observed after the heat treatment of the membrane. Compared with ionic conductivity of Nafion® (SE512), the PADMA membrane found to be inferior. However, the PADMA hydrogel membrane conductivity was greater (~1 × 10-4S/cm) at low and high pH compared with neutral pH (~1 × 10-5S/cm) indicating the possibility of using the membrane as either a proton and hydroxyl ion conductor.
Highlights
Fuel cell technology has been considered as a clean source of energy compared to conventional energy convert-How to cite this paper: Das, A., Basu, S., Verma, A. and Scott, K. (2015) Characterization of Low Cost Ion Conducting Poly(AAc-co-DMAPMA) Membrane for Fuel Cell Application
The present study focuses on the synthesis of the poly(AAc-co-DMAPMA) membrane (PADMA), which is cheap and easy to prepare from acrylic acid and N-3-[dimethylamino)propyl]-methacrylamide
The morphology of PADMA hydrogel membrane indicates that its matrix may be used similar to polybenzimidazole membrane soaked in phosphoric acid [10]
Summary
How to cite this paper: Das, A., Basu, S., Verma, A. and Scott, K. (2015) Characterization of Low Cost Ion Conducting Poly(AAc-co-DMAPMA) Membrane for Fuel Cell Application. There has been effort to develop new cost effective polymer electrolyte membrane (proton exchange type) for the application in PEMFC, which can be operated at high temperature. The development of high temperature polymer electrolyte membrane fuel cells is a recent research area. The present study is focused on the development of a novel and low cost polymer electrolyte membrane. These are hydrogel types of membranes, and to date the hydrogel membrane is rarely applied as PEM for fuel cell application. The PADMA hydrogel membrane is preliminary characterized by SEM, TGA, mechanical strength, and ionic conductivity at different temperature and pH for the possible use as electrolyte in fuel cells
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