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High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives
The study is devoted to one of the important problems of hydrogen energy—the comparative analysis and creation of novel highly conductive and durable medium-temperature proton membranes based on cesium dihydrogen phosphate and fluoropolymers. The proton conductivity, structural characteristics and m...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385413/ https://www.ncbi.nlm.nih.gov/pubmed/37504983 http://dx.doi.org/10.3390/membranes13070617 |
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author | Bagryantseva, Irina Ponomareva, Valentina Kungurtsev, Yuri |
author_facet | Bagryantseva, Irina Ponomareva, Valentina Kungurtsev, Yuri |
author_sort | Bagryantseva, Irina |
collection | PubMed |
description | The study is devoted to one of the important problems of hydrogen energy—the comparative analysis and creation of novel highly conductive and durable medium-temperature proton membranes based on cesium dihydrogen phosphate and fluoropolymers. The proton conductivity, structural characteristics and mechanical properties of (1 − x)CsH(2)PO(4)-x fluoropolymer electrolytes (x-mass fraction, x = 0–0.3) have been investigated and analyzed. UPTFE and PVDF-based polymers (F2M, F42, and SKF26) with high thermal stability and mechanical properties have been chosen as polymer additives. The used fluoropolymers are shown to be chemical inert matrices for CsH(2)PO(4). According to the XRD data, a monoclinic CsH(2)PO(4) (P2(1)/m) phase was retained in all of the polymer electrolytes studied. Highly conductive and mechanically strong composite membranes with thicknesses of ~50–100 μm were obtained for the soluble fluoropolymers (F2M, F42, and SKF26). The size and shape of CsH(2)PO(4) particles and their distribution have been shown to significantly affect proton conductivity and the mechanical properties of the membranes. The thin-film polymer systems with uniform distributions of salt particles (up to ~300 nm) were produced via the use of different methods. The best results were achieved via the pretreatment of the suspension in a bead mill. The ability of the membranes to resist plastic deformation increases with the growth of the polymer content in comparison with the pure CsH(2)PO(4), and the values of the mechanical strength characteristics are comparable to the best low-temperature polymer membranes. The proton-conducting membranes (1 − x)CsH(2)PO(4)-x fluoropolymer with the optimal combination of the conductivity and mechanical and hydrophobic properties are promising for use in solid acid fuel cells and other medium-temperature electrochemical devices. |
format | Online Article Text |
id | pubmed-10385413 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103854132023-07-30 High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives Bagryantseva, Irina Ponomareva, Valentina Kungurtsev, Yuri Membranes (Basel) Article The study is devoted to one of the important problems of hydrogen energy—the comparative analysis and creation of novel highly conductive and durable medium-temperature proton membranes based on cesium dihydrogen phosphate and fluoropolymers. The proton conductivity, structural characteristics and mechanical properties of (1 − x)CsH(2)PO(4)-x fluoropolymer electrolytes (x-mass fraction, x = 0–0.3) have been investigated and analyzed. UPTFE and PVDF-based polymers (F2M, F42, and SKF26) with high thermal stability and mechanical properties have been chosen as polymer additives. The used fluoropolymers are shown to be chemical inert matrices for CsH(2)PO(4). According to the XRD data, a monoclinic CsH(2)PO(4) (P2(1)/m) phase was retained in all of the polymer electrolytes studied. Highly conductive and mechanically strong composite membranes with thicknesses of ~50–100 μm were obtained for the soluble fluoropolymers (F2M, F42, and SKF26). The size and shape of CsH(2)PO(4) particles and their distribution have been shown to significantly affect proton conductivity and the mechanical properties of the membranes. The thin-film polymer systems with uniform distributions of salt particles (up to ~300 nm) were produced via the use of different methods. The best results were achieved via the pretreatment of the suspension in a bead mill. The ability of the membranes to resist plastic deformation increases with the growth of the polymer content in comparison with the pure CsH(2)PO(4), and the values of the mechanical strength characteristics are comparable to the best low-temperature polymer membranes. The proton-conducting membranes (1 − x)CsH(2)PO(4)-x fluoropolymer with the optimal combination of the conductivity and mechanical and hydrophobic properties are promising for use in solid acid fuel cells and other medium-temperature electrochemical devices. MDPI 2023-06-22 /pmc/articles/PMC10385413/ /pubmed/37504983 http://dx.doi.org/10.3390/membranes13070617 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Bagryantseva, Irina Ponomareva, Valentina Kungurtsev, Yuri High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives |
title | High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives |
title_full | High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives |
title_fullStr | High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives |
title_full_unstemmed | High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives |
title_short | High-Conductive CsH(2)PO(4) Membranes with PVDF-Based Polymers Additives |
title_sort | high-conductive csh(2)po(4) membranes with pvdf-based polymers additives |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10385413/ https://www.ncbi.nlm.nih.gov/pubmed/37504983 http://dx.doi.org/10.3390/membranes13070617 |
work_keys_str_mv | AT bagryantsevairina highconductivecsh2po4membraneswithpvdfbasedpolymersadditives AT ponomarevavalentina highconductivecsh2po4membraneswithpvdfbasedpolymersadditives AT kungurtsevyuri highconductivecsh2po4membraneswithpvdfbasedpolymersadditives |