alexa Fuel Cell Performance Of SPEEK-PEG-PWA Composite Membrane | 71501
ISSN: 2090-4541

Journal of Fundamentals of Renewable Energy and Applications
Open Access

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2nd International Conference on Battery and Fuel Cell Technology

Mamta Kumari, H S Sodaye and R C Bindal
Homi Bhabha National Institute, India
ScientificTracks Abstracts: J Fundam Renewable Energy Appl
DOI: 10.4172/2090-4541-C1-035
Abstract
Proton exchange membrane fuel cell (PEMFC) is promising technology for clean and efficient power generation in the 21st century. Currently perfluorinated membranes are used as electrolyte that have high cost and complicated synthesis process which limits the commercialization of the PEMFC. Hydrocarbon polymers are good alternative for membranes and during last few decades research has been concentrated on that. The present work focuses on the development of composite membrane by using a thermoplastic polymer, partially sulfonated polyether ether ketone (SPEEK) and polyethylene glycol (PEG) as cross-linker along with varying amount of phosphotungstic acid (PWA) as an inorganic additive. The membranes are prepared using sulfonated PEEK with an ion exchange capacity of 2 meq/g and 33% of PEG having molecular weight of 600 Da was used as cross linker, the amount of PWA was varied from 5 to 50%. Among the various concentration of PWA in membranes, the 10 wt% PWA gave highest conductivity (90 mS/ cm), less swelling and good stability in water up to 60ºC. The fuel cell performance of these membranes was measured using a 25 cm2 membrane electrode assembly made using commercial carbon paper based electrode (0.2 mg/cm2 Pt loading). The cell performance tests were carried out (H2/O2 at 2 bar pressure) at 30 and 60ºC (Figure 1). The maximum power density obtained at 30ºC was 75 mW/ cm2 at current density of 200 mA/cm2 and voltage 375 mV which increased at 60ºC to 173 mW/cm2 at current density of 440 mA/ cm2 and voltage 400 mV. The cell gave stable performance after running for 40 hours at its maximum power. The present membrane performance is comparable with the reported value for commercial membranes (power density of 360 mW/cm2 to 420 mW/cm2 at 600 mV and 80ºC). Hence, the SPEEK-PEG-PWA membranes can be an alternative solid polymer electrolyte for fuel cell.
Biography

Mamta Kumari is currently working as a Senior Research Fellow in the Membrane Development Section of Chemical Engineering Group at Homi Bhabha National Institute, India. She has expertise in the field of development of solid polymer electrolyte for electrochemical applications, e.g., fuel cells. Her studies are in the field of development of structurally modified membranes with high conductivity.

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