Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel Cells
Proton-exchange membranes based on gamma-irradiated films of PVDF and radiation-grafted sulfonated polystyrene with an ion-exchange capacity of 1.8 meq/g and crosslinking degrees of 0 and 3% were synthesized. A solvent-free, environmentally friendly method of styrene grafting from its aqueous emulsi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/18/3833 |
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| author | Daniil V. Golubenko Oleg V. Korchagin Daria Yu. Voropaeva Vera A. Bogdanovskaya Andrey B. Yaroslavtsev |
| author_facet | Daniil V. Golubenko Oleg V. Korchagin Daria Yu. Voropaeva Vera A. Bogdanovskaya Andrey B. Yaroslavtsev |
| author_sort | Daniil V. Golubenko |
| collection | DOAJ |
| description | Proton-exchange membranes based on gamma-irradiated films of PVDF and radiation-grafted sulfonated polystyrene with an ion-exchange capacity of 1.8 meq/g and crosslinking degrees of 0 and 3% were synthesized. A solvent-free, environmentally friendly method of styrene grafting from its aqueous emulsion, with a styrene content of only 5 vol.% was used. Energy dispersive X-ray mapping analysis showed that the grafted sulfonated polystyrene is uniformly distributed throughout the membrane thickness. The obtained materials had a proton conductivity up to 132 mS/cm at 80 °C and a hydrogen permeability of up to 5.2 cm<sup>2</sup>/s at 30 °C, which significantly exceeded similar values for Nafion<sup>®</sup>-212 membranes. The resulting membranes exhibited a H<sub>2</sub>/O<sub>2</sub> fuel cell peak power density of up to 0.4 W/cm<sup>2</sup> at 65 °C. Accelerated stability tests showed that adding a crosslinking agent could significantly increase the stability of the membranes in the fuel cells. The thermal properties and crystallinity of the membranes were investigated through differential scanning calorimetry and X-ray powder diffraction methods. The conductivity, water uptake, and mechanical properties of the membranes (stress–strain curves) were also characterized. |
| first_indexed | 2024-03-09T22:45:30Z |
| format | Article |
| id | doaj.art-6c6ea8ffbf254fb390fedfe37b55ccdb |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T22:45:30Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-6c6ea8ffbf254fb390fedfe37b55ccdb2023-11-23T18:30:39ZengMDPI AGPolymers2073-43602022-09-011418383310.3390/polym14183833Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel CellsDaniil V. Golubenko0Oleg V. Korchagin1Daria Yu. Voropaeva2Vera A. Bogdanovskaya3Andrey B. Yaroslavtsev4Kurnakov Institute of General and Inorganic Chemistry RAS, 31 Leninsky Avenue, 119991 Moscow, RussiaFrumkin Institute of Physical Chemistry and Electrochemistry RAS, 31 Leninsky Avenue, 119071 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry RAS, 31 Leninsky Avenue, 119991 Moscow, RussiaFrumkin Institute of Physical Chemistry and Electrochemistry RAS, 31 Leninsky Avenue, 119071 Moscow, RussiaKurnakov Institute of General and Inorganic Chemistry RAS, 31 Leninsky Avenue, 119991 Moscow, RussiaProton-exchange membranes based on gamma-irradiated films of PVDF and radiation-grafted sulfonated polystyrene with an ion-exchange capacity of 1.8 meq/g and crosslinking degrees of 0 and 3% were synthesized. A solvent-free, environmentally friendly method of styrene grafting from its aqueous emulsion, with a styrene content of only 5 vol.% was used. Energy dispersive X-ray mapping analysis showed that the grafted sulfonated polystyrene is uniformly distributed throughout the membrane thickness. The obtained materials had a proton conductivity up to 132 mS/cm at 80 °C and a hydrogen permeability of up to 5.2 cm<sup>2</sup>/s at 30 °C, which significantly exceeded similar values for Nafion<sup>®</sup>-212 membranes. The resulting membranes exhibited a H<sub>2</sub>/O<sub>2</sub> fuel cell peak power density of up to 0.4 W/cm<sup>2</sup> at 65 °C. Accelerated stability tests showed that adding a crosslinking agent could significantly increase the stability of the membranes in the fuel cells. The thermal properties and crystallinity of the membranes were investigated through differential scanning calorimetry and X-ray powder diffraction methods. The conductivity, water uptake, and mechanical properties of the membranes (stress–strain curves) were also characterized.https://www.mdpi.com/2073-4360/14/18/3833proton conducting membranesradiation-induced graft copolymerizationpolystyrene sulfonatepolyvinylidene fluorideproton-exchange membrane fuel cells |
| spellingShingle | Daniil V. Golubenko Oleg V. Korchagin Daria Yu. Voropaeva Vera A. Bogdanovskaya Andrey B. Yaroslavtsev Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel Cells Polymers proton conducting membranes radiation-induced graft copolymerization polystyrene sulfonate polyvinylidene fluoride proton-exchange membrane fuel cells |
| title | Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel Cells |
| title_full | Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel Cells |
| title_fullStr | Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel Cells |
| title_full_unstemmed | Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel Cells |
| title_short | Membranes Based on Polyvinylidene Fluoride and Radiation-Grafted Sulfonated Polystyrene and Their Performance in Proton-Exchange Membrane Fuel Cells |
| title_sort | membranes based on polyvinylidene fluoride and radiation grafted sulfonated polystyrene and their performance in proton exchange membrane fuel cells |
| topic | proton conducting membranes radiation-induced graft copolymerization polystyrene sulfonate polyvinylidene fluoride proton-exchange membrane fuel cells |
| url | https://www.mdpi.com/2073-4360/14/18/3833 |
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