A novel fuel cell membrane with high efficiency

Flexible organic–inorganic polymer nanocomposite membranes with uniformly distributed metal oxide nanoparticles were prepared using sulfonated poly(ether ether ketone) (SPEEK) as a base material and praseodymium oxide (PSO) as an inorganic additive. The degree of sulfonation of SPEEK was determined by proton nuclear magnetic resonance (NMR) analysis and found to be 60%. The characteristic properties of the polymer nanocomposite membranes were examined by thermogravimetric analysis, X-ray diffraction, ion exchange capacity, water uptake ability, and proton conductivity. The incorporation of metal oxide into the polymer matrix was confirmed by scanning electron microscope with energy dispersive X-ray spectroscopy and X-ray diffraction analyses. The nanocomposite membrane exhibits good thermal stability when compared to that of the pristine membrane and SPEEK with 10 wt% of PSO loading was found to be stable up to 450°C. The assessment of polymer electrolyte membrane is accomplished by fabricating membrane electrode assemblies of pure SPEEK and SP-PSO-10 membranes and the latter produced maximum peak power density of 622 mW cm−2. The constructed SPEEK/PSO nanocomposite membranes offered superior physicochemical properties while applying these materials in an H2-O2 fuel cell.

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“…The detailed procedure for the electrochemical performance studies was reported in our earlier article. 34…”

Section: Experimental Methodsmentioning

confidence: 99%

New series of organic–inorganic polymer nanocomposite membranes for fuel cell applications

Sivasubramanian¹,

Hariharasubramanian²,

Deivanayagam

2019

High Performance Polymers

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“…The proton conductivity measurements of the samples were carried out by our earlier reported article. 23…”

Section: Experimental Methodsmentioning

confidence: 99%

Development of proton-exchange polymer nanocomposite membranes for fuel cell applications

Sivasubramanian¹,

Hariharasubramanian²,

Deivanayagam

2019

Polymers and Polymer Composites

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The design and development of proton conducting polymer electrolyte membranes from a linear constituent, sulfonated poly (ether ether ketone) (SPEEK), and inorganic additive, niobium oxide (NBO), have been achieved. The degree of sulfonation of SPEEK was measured by back titration method and found to be 57%. The physicochemical properties such as water uptake ability, ion-exchange capacity, swelling ratio, proton conductivity, and thermal stability of the prepared polymer nanocomposite membranes were studied in detail. The distribution of NBO throughout the polymer matrix has been examined by scanning electron microscopic and X-ray diffraction analyses and found to be uniform. The SP-NBO-10 composite membrane shows 38.4% of water uptake, whereas the pristine membrane limits to 27.1%. The prepared electrolyte membranes exhibit good proton conductivity at temperature varying from 30°C to 90°C and possess less activation energy for the transportation of proton by the incorporation of NBO filler. The thermal studies demonstrated that the stability of the composite membranes was significantly enhanced by the impregnation of NBO. The filler NBO shows excellent improvements on the polymer nanocomposite, making it a very promising additive for other polymers and offers new roads for energy applications.

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“…Water uptake ability and swelling ratio of the electrolyte membranes were measured as per the procedure reported in our previous study. 42 Thermogravimetric analysis (TGA) was used to investigate the thermal stability of the polymers. Samples were heated from room temperature to 600 C at the rate of 10 C min À1 under a N 2 atmosphere.…”

Section: Measurementsmentioning

confidence: 99%

Novel cross-linked poly(vinyl alcohol)-based electrolyte membranes for fuel cell applications

2020

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A novel fuel cell membrane with high efficiency

Abstract: A novel polymer containing an azo based ionic diol has been successfully fabricated as an electrolyte membrane to yield a good fuel cell performance in the whole range of current density.

Cited by 14 publications

References 55 publications

New series of organic–inorganic polymer nanocomposite membranes for fuel cell applications

New series of organic–inorganic polymer nanocomposite membranes for fuel cell applications

Development of proton-exchange polymer nanocomposite membranes for fuel cell applications

Novel cross-linked poly(vinyl alcohol)-based electrolyte membranes for fuel cell applications

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