Proton-conducting membranes based on CsH2PO4 and copolymer of tetrafluoroethylene with vinylidene fluoride

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Proton-conducting membranes based on CsH₂PO₄ and copolymer of tetrafluoroethylene with vinylidene fluoride. / Bagryantseva, Irina N.; Kungurtsev, Yuri E.; Ponomareva, Valentina G.

In: Chimica Techno Acta, Vol. 9, No. 3, 20229303, 2022.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{e9591ef749e74aec91840c7e8a14e21e,

title = "Proton-conducting membranes based on CsH2PO4 and copolymer of tetrafluoroethylene with vinylidene fluoride",

abstract = "In this work, proton conductivity, morphology and mechanical properties of (1–x)CsH2PO4–xF-42 (x=0.05–0.3, weight ratio) membranes were investigated for the first time. Thin flexible membranes for x≥0.15 with the uniform distribution of the components were obtained by a tape casting method. Mechanical properties of the membranes were measured by Vickers microhardness tests for a low polymer content (x<0.15), also the tensile strength for membranes with high polymer content x=0.2–0.3 were evaluated. Proton conductivity of the (1–x)CsH2PO4–xpF-42 composite polymer electrolytes decreases monotonically with increasing x due to the effect of a «conductor-insulator» percolation. The combination of conductivity, mechanical strength and hydrophobic properties of (1–x)CsH2PO4–xF-42 makes certain compositions of proton-conducting membranes (x~0.2–0.25) promising for their use in intermediate-temperature fuel cells, despite decreased conductivity.",

keywords = "cesium dihydrogen phosphate, fluoropolymer, p(VDF/TFE), proton conductivity, tape casting",

author = "Bagryantseva, {Irina N.} and Kungurtsev, {Yuri E.} and Ponomareva, {Valentina G.}",

note = "Funding Information: This work was supported by the Russian Science Foundation (grant no. 21-73-00298). Publisher Copyright: {\textcopyright} 2022, the Authors.",

year = "2022",

doi = "10.15826/chimtech.2022.9.3.03",

language = "English",

volume = "9",

journal = "Chimica Techno Acta",

issn = "2409-5613",

publisher = "Ural Federal University",

number = "3",

}

RIS

TY - JOUR

T1 - Proton-conducting membranes based on CsH2PO4 and copolymer of tetrafluoroethylene with vinylidene fluoride

AU - Bagryantseva, Irina N.

AU - Kungurtsev, Yuri E.

AU - Ponomareva, Valentina G.

PY - 2022

Y1 - 2022

N2 - In this work, proton conductivity, morphology and mechanical properties of (1–x)CsH2PO4–xF-42 (x=0.05–0.3, weight ratio) membranes were investigated for the first time. Thin flexible membranes for x≥0.15 with the uniform distribution of the components were obtained by a tape casting method. Mechanical properties of the membranes were measured by Vickers microhardness tests for a low polymer content (x<0.15), also the tensile strength for membranes with high polymer content x=0.2–0.3 were evaluated. Proton conductivity of the (1–x)CsH2PO4–xpF-42 composite polymer electrolytes decreases monotonically with increasing x due to the effect of a «conductor-insulator» percolation. The combination of conductivity, mechanical strength and hydrophobic properties of (1–x)CsH2PO4–xF-42 makes certain compositions of proton-conducting membranes (x~0.2–0.25) promising for their use in intermediate-temperature fuel cells, despite decreased conductivity.

AB - In this work, proton conductivity, morphology and mechanical properties of (1–x)CsH2PO4–xF-42 (x=0.05–0.3, weight ratio) membranes were investigated for the first time. Thin flexible membranes for x≥0.15 with the uniform distribution of the components were obtained by a tape casting method. Mechanical properties of the membranes were measured by Vickers microhardness tests for a low polymer content (x<0.15), also the tensile strength for membranes with high polymer content x=0.2–0.3 were evaluated. Proton conductivity of the (1–x)CsH2PO4–xpF-42 composite polymer electrolytes decreases monotonically with increasing x due to the effect of a «conductor-insulator» percolation. The combination of conductivity, mechanical strength and hydrophobic properties of (1–x)CsH2PO4–xF-42 makes certain compositions of proton-conducting membranes (x~0.2–0.25) promising for their use in intermediate-temperature fuel cells, despite decreased conductivity.

KW - cesium dihydrogen phosphate

KW - fluoropolymer

KW - p(VDF/TFE)

KW - proton conductivity

KW - tape casting

UR - http://www.scopus.com/inward/record.url?scp=85139968934&partnerID=8YFLogxK

UR - https://www.elibrary.ru/item.asp?id=49453968

UR - https://www.mendeley.com/catalogue/0203304c-c39e-336e-bcf7-839d2418930f/

U2 - 10.15826/chimtech.2022.9.3.03

DO - 10.15826/chimtech.2022.9.3.03

M3 - Article

AN - SCOPUS:85139968934

VL - 9

JO - Chimica Techno Acta

JF - Chimica Techno Acta

SN - 2409-5613

IS - 3

M1 - 20229303

ER -

ID: 38182752