Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers
This paper is focused on the determination of the physicochemical properties of a composite inorganic–organic modified membrane. The electrical conductivity of a family of glassy protonic electrolytes defined by the general formula (P<sub>2</sub>O<sub>5</sub>)<sub>x<...
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2020-07-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/13/3004 |
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| author | Maciej Siekierski Maja Mroczkowska-Szerszeń Rafał Letmanowski Dariusz Zabost Michał Piszcz Lidia Dudek Michał M. Struzik Magdalena Winkowska-Struzik Renata Cicha-Szot Magdalena Dudek |
| author_facet | Maciej Siekierski Maja Mroczkowska-Szerszeń Rafał Letmanowski Dariusz Zabost Michał Piszcz Lidia Dudek Michał M. Struzik Magdalena Winkowska-Struzik Renata Cicha-Szot Magdalena Dudek |
| author_sort | Maciej Siekierski |
| collection | DOAJ |
| description | This paper is focused on the determination of the physicochemical properties of a composite inorganic–organic modified membrane. The electrical conductivity of a family of glassy protonic electrolytes defined by the general formula (P<sub>2</sub>O<sub>5</sub>)<sub>x</sub>(SiO<sub>2</sub>)<sub>y</sub>, where x/y is 3/7 are studied by Alternating Current electrochemical impedance spectroscopy (AC EIS) method. The reference glass was doped with polymeric additives—poly(ethylene oxide) (PEO) and poly(vinyl alcohol) (PVA), and additionally with a titanium-oxide-based filler. Special attention was paid to determination of the transport properties of the materials thus modified in relation to the charge transfer phenomena occurring within them. The electrical conductivities of the ‘dry’ material ranged from 10<sup>−4</sup> to 10<sup>−9</sup> S/cm, whereas for ‘wet’ samples the values were ~10<sup>−3</sup> S/cm. The additives also modified the pore space of the samples. The pore distribution and specific surface of the modified glassy systems exhibited variation with changes in electrolyte chemical composition. The mechanical properties of the samples were also examined. The Young’s modulus and Poisson’s ratio were determined by the continuous wave technique (CWT). Based on analysis of the dispersion of the dielectric losses, it was found that the composite samples exhibit mixed-type proton mobility with contributions related to both the bulk of the material and the surface of the pore space. |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T18:39:07Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-02c144d374f64967a7fd249b0e1c81442023-11-20T05:57:11ZengMDPI AGMaterials1996-19442020-07-011313300410.3390/ma13133004Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based FillersMaciej Siekierski0Maja Mroczkowska-Szerszeń1Rafał Letmanowski2Dariusz Zabost3Michał Piszcz4Lidia Dudek5Michał M. Struzik6Magdalena Winkowska-Struzik7Renata Cicha-Szot8Magdalena Dudek9Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3 Str., 00-640 Warsaw, PolandOil and Gas Institute-National Research Institute, Lubicz 25a Str., 31-503 Cracow, PolandFaculty of Chemistry, Warsaw University of Technology, Noakowskiego 3 Str., 00-640 Warsaw, PolandFaculty of Chemistry, Warsaw University of Technology, Noakowskiego 3 Str., 00-640 Warsaw, PolandFaculty of Chemistry, Warsaw University of Technology, Noakowskiego 3 Str., 00-640 Warsaw, PolandOil and Gas Institute-National Research Institute, Lubicz 25a Str., 31-503 Cracow, PolandFaculty of Physics, Warsaw University of Technology, 75 Koszykowa Str., 00-662 Warsaw, PolandŁukasiewicz Research Network-Institute of Electronic Materials Technology, 133 Wólczyńska Str., 01-919 Warsaw, PolandOil and Gas Institute-National Research Institute, Lubicz 25a Str., 31-503 Cracow, PolandFaculty of Energy and Fuels, AGH University of Science and Technology, Av. A. Mickiewicza 30, 30-059 Krakow, PolandThis paper is focused on the determination of the physicochemical properties of a composite inorganic–organic modified membrane. The electrical conductivity of a family of glassy protonic electrolytes defined by the general formula (P<sub>2</sub>O<sub>5</sub>)<sub>x</sub>(SiO<sub>2</sub>)<sub>y</sub>, where x/y is 3/7 are studied by Alternating Current electrochemical impedance spectroscopy (AC EIS) method. The reference glass was doped with polymeric additives—poly(ethylene oxide) (PEO) and poly(vinyl alcohol) (PVA), and additionally with a titanium-oxide-based filler. Special attention was paid to determination of the transport properties of the materials thus modified in relation to the charge transfer phenomena occurring within them. The electrical conductivities of the ‘dry’ material ranged from 10<sup>−4</sup> to 10<sup>−9</sup> S/cm, whereas for ‘wet’ samples the values were ~10<sup>−3</sup> S/cm. The additives also modified the pore space of the samples. The pore distribution and specific surface of the modified glassy systems exhibited variation with changes in electrolyte chemical composition. The mechanical properties of the samples were also examined. The Young’s modulus and Poisson’s ratio were determined by the continuous wave technique (CWT). Based on analysis of the dispersion of the dielectric losses, it was found that the composite samples exhibit mixed-type proton mobility with contributions related to both the bulk of the material and the surface of the pore space.https://www.mdpi.com/1996-1944/13/13/3004protonic composite conductorsmedium temperature PEM fuel cellsol–gelphosphosilicate glassPVAPEO polymeric additives |
| spellingShingle | Maciej Siekierski Maja Mroczkowska-Szerszeń Rafał Letmanowski Dariusz Zabost Michał Piszcz Lidia Dudek Michał M. Struzik Magdalena Winkowska-Struzik Renata Cicha-Szot Magdalena Dudek Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers Materials protonic composite conductors medium temperature PEM fuel cell sol–gel phosphosilicate glass PVA PEO polymeric additives |
| title | Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers |
| title_full | Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers |
| title_fullStr | Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers |
| title_full_unstemmed | Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers |
| title_short | Ionic Transport Properties of P<sub>2</sub>O<sub>5</sub>-SiO<sub>2</sub> Glassy Protonic Composites Doped with Polymer and Inorganic Titanium-based Fillers |
| title_sort | ionic transport properties of p sub 2 sub o sub 5 sub sio sub 2 sub glassy protonic composites doped with polymer and inorganic titanium based fillers |
| topic | protonic composite conductors medium temperature PEM fuel cell sol–gel phosphosilicate glass PVA PEO polymeric additives |
| url | https://www.mdpi.com/1996-1944/13/13/3004 |
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