Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties

Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties

Proton-conducting ionomers are widespread materials for application in electrochemical energy storage devices. However, their properties depend strongly on operating conditions. In bio-fuel cells with a separator membrane, the swelling behavior as well as the conductivity need to be optimized with r...

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Main Authors: Luca Pasquini, Botagoz Zhakisheva, Emanuela Sgreccia, Riccardo Narducci, Maria Luisa Di Vona, Philippe Knauth
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Polymers
Subjects:
ionomer
blend
casting
SPEEK
SPPSU
crosslinking
Online Access:https://www.mdpi.com/2073-4360/13/3/475
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spelling doaj-150eea009d704ee284bdffcb993420d32021-02-03T00:06:53ZengMDPI AGPolymers2073-43602021-02-011347547510.3390/polym13030475Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical PropertiesLuca Pasquini0Botagoz Zhakisheva1Emanuela Sgreccia2Riccardo Narducci3Maria Luisa Di Vona4Philippe Knauth5Aix Marseille Univ, CNRS, MADIREL (UMR 7246) and International Laboratory: Ionomer Materials for Energy, Campus St Jérôme, 13013 Marseille, FranceAix Marseille Univ, CNRS, MADIREL (UMR 7246) and International Laboratory: Ionomer Materials for Energy, Campus St Jérôme, 13013 Marseille, FranceDepartment Industrial Engineering and International Laboratory: Ionomer Materials for Energy, University of Rome Tor Vergata, 00133 Roma, ItalyDepartment Industrial Engineering and International Laboratory: Ionomer Materials for Energy, University of Rome Tor Vergata, 00133 Roma, ItalyDepartment Industrial Engineering and International Laboratory: Ionomer Materials for Energy, University of Rome Tor Vergata, 00133 Roma, ItalyAix Marseille Univ, CNRS, MADIREL (UMR 7246) and International Laboratory: Ionomer Materials for Energy, Campus St Jérôme, 13013 Marseille, FranceProton-conducting ionomers are widespread materials for application in electrochemical energy storage devices. However, their properties depend strongly on operating conditions. In bio-fuel cells with a separator membrane, the swelling behavior as well as the conductivity need to be optimized with regard to the use of buffer solutions for the stability of the enzyme catalyst. This work presents a study of the hydrolytic stability, conductivity and mechanical behavior of different proton exchange membranes based on sulfonated poly(ether ether ketone) (SPEEK) and sulfonated poly(phenyl sulfone) (SPPSU) ionomers in phosphate buffer solution. The results show that the membrane stability can be adapted by changing the casting solvent (DMSO, water or ethanol) and procedures, including a crosslinking heat treatment, or by blending the two ionomers. A comparison with Nafion<sup>TM</sup> shows the different behavior of this ionomer versus SPEEK membranes.https://www.mdpi.com/2073-4360/13/3/475ionomerblendcastingSPEEKSPPSUcrosslinking
collection DOAJ
language English
format Article
sources DOAJ
author Luca Pasquini
Botagoz Zhakisheva
Emanuela Sgreccia
Riccardo Narducci
Maria Luisa Di Vona
Philippe Knauth
spellingShingle Luca Pasquini
Botagoz Zhakisheva
Emanuela Sgreccia
Riccardo Narducci
Maria Luisa Di Vona
Philippe Knauth
Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties
Polymers
ionomer
blend
casting
SPEEK
SPPSU
crosslinking
author_facet Luca Pasquini
Botagoz Zhakisheva
Emanuela Sgreccia
Riccardo Narducci
Maria Luisa Di Vona
Philippe Knauth
author_sort Luca Pasquini
title Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties
title_short Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties
title_full Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties
title_fullStr Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties
title_full_unstemmed Stability of Proton Exchange Membranes in Phosphate Buffer for Enzymatic Fuel Cell Application: Hydration, Conductivity and Mechanical Properties
title_sort stability of proton exchange membranes in phosphate buffer for enzymatic fuel cell application: hydration, conductivity and mechanical properties
publisher MDPI AG
series Polymers
issn 2073-4360
publishDate 2021-02-01
description Proton-conducting ionomers are widespread materials for application in electrochemical energy storage devices. However, their properties depend strongly on operating conditions. In bio-fuel cells with a separator membrane, the swelling behavior as well as the conductivity need to be optimized with regard to the use of buffer solutions for the stability of the enzyme catalyst. This work presents a study of the hydrolytic stability, conductivity and mechanical behavior of different proton exchange membranes based on sulfonated poly(ether ether ketone) (SPEEK) and sulfonated poly(phenyl sulfone) (SPPSU) ionomers in phosphate buffer solution. The results show that the membrane stability can be adapted by changing the casting solvent (DMSO, water or ethanol) and procedures, including a crosslinking heat treatment, or by blending the two ionomers. A comparison with Nafion<sup>TM</sup> shows the different behavior of this ionomer versus SPEEK membranes.
topic ionomer
blend
casting
SPEEK
SPPSU
crosslinking
url https://www.mdpi.com/2073-4360/13/3/475
work_keys_str_mv AT lucapasquini stabilityofprotonexchangemembranesinphosphatebufferforenzymaticfuelcellapplicationhydrationconductivityandmechanicalproperties
AT botagozzhakisheva stabilityofprotonexchangemembranesinphosphatebufferforenzymaticfuelcellapplicationhydrationconductivityandmechanicalproperties
AT emanuelasgreccia stabilityofprotonexchangemembranesinphosphatebufferforenzymaticfuelcellapplicationhydrationconductivityandmechanicalproperties
AT riccardonarducci stabilityofprotonexchangemembranesinphosphatebufferforenzymaticfuelcellapplicationhydrationconductivityandmechanicalproperties
AT marialuisadivona stabilityofprotonexchangemembranesinphosphatebufferforenzymaticfuelcellapplicationhydrationconductivityandmechanicalproperties
AT philippeknauth stabilityofprotonexchangemembranesinphosphatebufferforenzymaticfuelcellapplicationhydrationconductivityandmechanicalproperties
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