Proton-conductive membranes based on CsH2PO4 and ultra-dispersed polytetrafluoroethylene

Irina N. Bagryantseva; Valentina G. Ponomareva; Natalia P. Lazareva

doi:10.1016/j.ssi.2018.11.010

Proton-conductive membranes based on CsH₂PO₄ and ultra-dispersed polytetrafluoroethylene

Irina N. Bagryantseva, Valentina G. Ponomareva, Natalia P. Lazareva

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

6 Citations (Scopus)

Abstract

Proton conductivity, structural and morphological characteristics of new polymer containing composite membranes based on CsH2PO4 and ultra-dispersed polytetrafluoroethylene (UPTFE) have been investigated. Optimization of the preparation method of membranes was carried out. The CsH2PO4 (P2(1)/m) phase was shown to persist in the UPTFE polymer matrix in a whole range of compositions. The proton conductivity of (1 - x)CsH2PO4 - xUPTFE (x = 0.035-0.3 x-weight fraction) electrolytes with various composition was studied as a function of temperature and partial pressure of water vapor. The conductivity values were close to the pure CsH2PO4 at x <0.1. With x increase the conductivity decreased due to the "conductor-insulator" percolation effect within one order of magnitude. The unit cell parameters of CsH2PO4 in polymer matrix were calculated and microstructure of electrolytes was studied.

Original language	English
Pages (from-to)	61-66
Number of pages	6
Journal	Solid State Ionics
Volume	329
DOIs	https://doi.org/10.1016/j.ssi.2018.11.010
Publication status	Published - 1 Jan 2019

Keywords

Acid salt
Cesium dihydrogen phosphate
Composite polymer electrolyte
Polytetrafluoroethylene
Proton conductivity
CRYSTAL-STRUCTURE
CESIUM DIHYDROGEN PHOSPHATE
SUPERPROTONIC CONDUCTIVITY
SALTS
COMPOSITE ELECTROLYTES
DIFFRACTION
SILICA
HIGH-TEMPERATURE BEHAVIOR

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10.1016/j.ssi.2018.11.010

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title = "Proton-conductive membranes based on CsH2PO4 and ultra-dispersed polytetrafluoroethylene",

abstract = "Proton conductivity, structural and morphological characteristics of new polymer containing composite membranes based on CsH2PO4 and ultra-dispersed polytetrafluoroethylene (UPTFE) have been investigated. Optimization of the preparation method of membranes was carried out. The CsH2PO4 (P2(1)/m) phase was shown to persist in the UPTFE polymer matrix in a whole range of compositions. The proton conductivity of (1 - x)CsH2PO4 - xUPTFE (x = 0.035-0.3 x-weight fraction) electrolytes with various composition was studied as a function of temperature and partial pressure of water vapor. The conductivity values were close to the pure CsH2PO4 at x <0.1. With x increase the conductivity decreased due to the {"}conductor-insulator{"} percolation effect within one order of magnitude. The unit cell parameters of CsH2PO4 in polymer matrix were calculated and microstructure of electrolytes was studied.",

keywords = "Acid salt, Cesium dihydrogen phosphate, Composite polymer electrolyte, Polytetrafluoroethylene, Proton conductivity, CRYSTAL-STRUCTURE, CESIUM DIHYDROGEN PHOSPHATE, SUPERPROTONIC CONDUCTIVITY, SALTS, COMPOSITE ELECTROLYTES, DIFFRACTION, SILICA, HIGH-TEMPERATURE BEHAVIOR",

author = "Bagryantseva, {Irina N.} and Ponomareva, {Valentina G.} and Lazareva, {Natalia P.}",

year = "2019",

month = jan,

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doi = "10.1016/j.ssi.2018.11.010",

language = "English",

volume = "329",

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journal = "Solid State Ionics",

issn = "0167-2738",

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AU - Bagryantseva, Irina N.

AU - Ponomareva, Valentina G.

AU - Lazareva, Natalia P.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Proton conductivity, structural and morphological characteristics of new polymer containing composite membranes based on CsH2PO4 and ultra-dispersed polytetrafluoroethylene (UPTFE) have been investigated. Optimization of the preparation method of membranes was carried out. The CsH2PO4 (P2(1)/m) phase was shown to persist in the UPTFE polymer matrix in a whole range of compositions. The proton conductivity of (1 - x)CsH2PO4 - xUPTFE (x = 0.035-0.3 x-weight fraction) electrolytes with various composition was studied as a function of temperature and partial pressure of water vapor. The conductivity values were close to the pure CsH2PO4 at x <0.1. With x increase the conductivity decreased due to the "conductor-insulator" percolation effect within one order of magnitude. The unit cell parameters of CsH2PO4 in polymer matrix were calculated and microstructure of electrolytes was studied.

AB - Proton conductivity, structural and morphological characteristics of new polymer containing composite membranes based on CsH2PO4 and ultra-dispersed polytetrafluoroethylene (UPTFE) have been investigated. Optimization of the preparation method of membranes was carried out. The CsH2PO4 (P2(1)/m) phase was shown to persist in the UPTFE polymer matrix in a whole range of compositions. The proton conductivity of (1 - x)CsH2PO4 - xUPTFE (x = 0.035-0.3 x-weight fraction) electrolytes with various composition was studied as a function of temperature and partial pressure of water vapor. The conductivity values were close to the pure CsH2PO4 at x <0.1. With x increase the conductivity decreased due to the "conductor-insulator" percolation effect within one order of magnitude. The unit cell parameters of CsH2PO4 in polymer matrix were calculated and microstructure of electrolytes was studied.

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KW - COMPOSITE ELECTROLYTES

KW - DIFFRACTION

KW - SILICA

KW - HIGH-TEMPERATURE BEHAVIOR

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M3 - Article

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