SPEEK/PPSU-based organic-inorganic membranes: proton conducting electrolytes in anhydrous and wet environments

M. Luisa Di Vona; Alessandra D'Epifanio; Debora Marani; Marcella Trombetta; Enrico Traversa; Silvia Licoccia

doi:10.1016/j.memsci.2005.12.003

SPEEK/PPSU-based organic-inorganic membranes: proton conducting electrolytes in anhydrous and wet environments

M. Luisa Di Vona^*, Alessandra D'Epifanio, Debora Marani, Marcella Trombetta, Enrico Traversa, Silvia Licoccia

^*Corresponding author for this work

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

59 Scopus citations

Abstract

A telechelic organic-inorganic polymer (SiPPSU) where -SiPh(OH)₂ groups are covalently linked to the polymeric chain of polyphenylsulfone (PPSU) was prepared and characterized. The polymer was sulfonated up to a degree of sulfonation (DS) equal to 2 (SiSPPSU), then used to prepare blends with sulfonated polyetheretherketone (SPEEK) having DS = 0.9 in 5 and 10 wt.% concentration. The synthesized polymers and the blends were characterized by ATR/FT-IR spectroscopy. Membranes were prepared with these materials and their proton conductivity was measured using electrochemical impedance spectroscopy (EIS). The formation of the blends substantially altered the physicochemical characteristics of SPEEK: the membrane prepared with the blend at the concentration of 5 wt.% exhibited high and stable conductivity values at 120 °C: both when dry (σ = 6.1 × 10^-3 S/cm) and wet conditions (σ = 6.4 × 10^-2 S/cm for a 50% water uptake), hence, being suitable for application as electrolyte in intermediate temperature polymer electrolyte membrane fuel cells (PEMFCs).

Original language	English (US)
Pages (from-to)	186-191
Number of pages	6
Journal	Journal of Membrane Science
Volume	279
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2005.12.003
State	Published - Aug 1 2006
Externally published	Yes

Bibliographical note

Funding Information:
Thanks are due to Ms. Cadia D’Ottavi for her valuable technical assistance. This work has been supported by MIUR (FISR Project Development of composite protonic membranes and innovative electrode configuration for PEFCs).

Keywords

Blend
Organic-inorganic telechelic polymer
Polyetheretherketone (PEEK)
Polyphenylsulfone (PPSU)
Proton exchange membrane

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/j.memsci.2005.12.003

Cite this

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title = "SPEEK/PPSU-based organic-inorganic membranes: proton conducting electrolytes in anhydrous and wet environments",

abstract = "A telechelic organic-inorganic polymer (SiPPSU) where -SiPh(OH)2 groups are covalently linked to the polymeric chain of polyphenylsulfone (PPSU) was prepared and characterized. The polymer was sulfonated up to a degree of sulfonation (DS) equal to 2 (SiSPPSU), then used to prepare blends with sulfonated polyetheretherketone (SPEEK) having DS = 0.9 in 5 and 10 wt.% concentration. The synthesized polymers and the blends were characterized by ATR/FT-IR spectroscopy. Membranes were prepared with these materials and their proton conductivity was measured using electrochemical impedance spectroscopy (EIS). The formation of the blends substantially altered the physicochemical characteristics of SPEEK: the membrane prepared with the blend at the concentration of 5 wt.% exhibited high and stable conductivity values at 120 °C: both when dry (σ = 6.1 × 10-3 S/cm) and wet conditions (σ = 6.4 × 10-2 S/cm for a 50% water uptake), hence, being suitable for application as electrolyte in intermediate temperature polymer electrolyte membrane fuel cells (PEMFCs).",

keywords = "Blend, Organic-inorganic telechelic polymer, Polyetheretherketone (PEEK), Polyphenylsulfone (PPSU), Proton exchange membrane",

author = "{Di Vona}, {M. Luisa} and Alessandra D'Epifanio and Debora Marani and Marcella Trombetta and Enrico Traversa and Silvia Licoccia",

note = "Funding Information: Thanks are due to Ms. Cadia D{\textquoteright}Ottavi for her valuable technical assistance. This work has been supported by MIUR (FISR Project Development of composite protonic membranes and innovative electrode configuration for PEFCs).",

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doi = "10.1016/j.memsci.2005.12.003",

language = "English (US)",

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T1 - SPEEK/PPSU-based organic-inorganic membranes

T2 - proton conducting electrolytes in anhydrous and wet environments

AU - Di Vona, M. Luisa

AU - D'Epifanio, Alessandra

AU - Marani, Debora

AU - Trombetta, Marcella

AU - Traversa, Enrico

AU - Licoccia, Silvia

N1 - Funding Information: Thanks are due to Ms. Cadia D’Ottavi for her valuable technical assistance. This work has been supported by MIUR (FISR Project Development of composite protonic membranes and innovative electrode configuration for PEFCs).

PY - 2006/8/1

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N2 - A telechelic organic-inorganic polymer (SiPPSU) where -SiPh(OH)2 groups are covalently linked to the polymeric chain of polyphenylsulfone (PPSU) was prepared and characterized. The polymer was sulfonated up to a degree of sulfonation (DS) equal to 2 (SiSPPSU), then used to prepare blends with sulfonated polyetheretherketone (SPEEK) having DS = 0.9 in 5 and 10 wt.% concentration. The synthesized polymers and the blends were characterized by ATR/FT-IR spectroscopy. Membranes were prepared with these materials and their proton conductivity was measured using electrochemical impedance spectroscopy (EIS). The formation of the blends substantially altered the physicochemical characteristics of SPEEK: the membrane prepared with the blend at the concentration of 5 wt.% exhibited high and stable conductivity values at 120 °C: both when dry (σ = 6.1 × 10-3 S/cm) and wet conditions (σ = 6.4 × 10-2 S/cm for a 50% water uptake), hence, being suitable for application as electrolyte in intermediate temperature polymer electrolyte membrane fuel cells (PEMFCs).

AB - A telechelic organic-inorganic polymer (SiPPSU) where -SiPh(OH)2 groups are covalently linked to the polymeric chain of polyphenylsulfone (PPSU) was prepared and characterized. The polymer was sulfonated up to a degree of sulfonation (DS) equal to 2 (SiSPPSU), then used to prepare blends with sulfonated polyetheretherketone (SPEEK) having DS = 0.9 in 5 and 10 wt.% concentration. The synthesized polymers and the blends were characterized by ATR/FT-IR spectroscopy. Membranes were prepared with these materials and their proton conductivity was measured using electrochemical impedance spectroscopy (EIS). The formation of the blends substantially altered the physicochemical characteristics of SPEEK: the membrane prepared with the blend at the concentration of 5 wt.% exhibited high and stable conductivity values at 120 °C: both when dry (σ = 6.1 × 10-3 S/cm) and wet conditions (σ = 6.4 × 10-2 S/cm for a 50% water uptake), hence, being suitable for application as electrolyte in intermediate temperature polymer electrolyte membrane fuel cells (PEMFCs).

KW - Blend

KW - Organic-inorganic telechelic polymer

KW - Polyetheretherketone (PEEK)

KW - Polyphenylsulfone (PPSU)

KW - Proton exchange membrane

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ER -

SPEEK/PPSU-based organic-inorganic membranes: proton conducting electrolytes in anhydrous and wet environments

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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