Degradation of sulfonated polyimide membranes in fuel cell conditions

Meyer, Gilles; Gebel, Gérard; Gonon, Laetitia; Capron, P.; Marscaq, Didier; Marestin, Catherine; Merçier, Régis

doi:10.1016/j.jpowsour.2005.07.049

Cited by 66 publications

(52 citation statements)

References 19 publications

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“…One approach is to prepare new polyelectrolytes as Nafion ® alternatives. Most PEM materials are based on non-fluorinated or partially fluorinated aromatic polymers such as sulfonated polyimides [2][3][4][5][6] and sulfonated poly(aryl ether)s [7][8][9][10][11][12]. However, many of the reported hydrocarbonbased PEM prepared as alternatives to Nafion ® still do not ଝ NRCC Publication 49114.possess the full range or combination of desired properties for application in DMFC.…”

Section: Introductionmentioning

confidence: 99%

Proton exchange membranes modified with sulfonated silica nanoparticles for direct methanol fuel cells☆

Liu

Sun

et al. 2007

Journal of Membrane Science

153

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Nanocomposite proton exchange membranes were prepared from sulfonated poly(phthalazinone ether ketone) (sPPEK) and various amounts of sulfonated silica nanoparticles (silica-SO 3 H). The use of silica-SO 3 H compensates for the decrease in ion exchange capacity of membranes observed when non-sulfonated nano-fillers are utilized. The strong -SO 3 H/-SO 3 H interaction between sPPEK chains and silica-SO 3 H particles leads to ionic cross-linking in the membrane structure, which increases both the thermal stability and methanol resistance of the membranes. The membrane with 7.5 phr of silica-SO 3 H (phr = g of silica-SO 3 H/100 g of sPPEK in membranes) exhibits low methanol crossover, high bound-water content, and a proton conductivity of 3.6 fold increase to that of the pristine sPPEK membrane.

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Section: Introductionmentioning

confidence: 99%

Proton exchange membranes modified with sulfonated silica nanoparticles for direct methanol fuel cells☆

Liu

Sun

et al. 2007

Journal of Membrane Science

153

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“…19,20 Recently, the research group of Mercier and Diat et al has reported on the aging of the BDSA-based block copolyimide membranes in PEFCs and in hot water. 21,22 The predominant aging mechanism was imide group hydrolysis, which was significantly accelerated above 80 C. These results lead us to the view that a series of copolyimide membranes derived from NTDA, BDSA and different nonsulfonated diamines generally have poor water stability at temperatures above 80 C. This review presents an overview of the synthesis, membrane stability, chemical and electrochemical properties, and fuel cell applications of new protonconducting polymer electrolyte membranes based on sulfonated polyimides that have been made during the past decade.…”

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confidence: 99%

On the Development of Naphthalene-Based Sulfonated Polyimide Membranes for Fuel Cell Applications

Yin

Yamada

Tanaka

et al. 2006

Polym J

178

109

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ABSTRACT:This article reviews the recent progress made over the past years based on naphthalene-based sulfonated polyimides (SPIs) in terms of proton conductivity, membrane swelling behavior, membrane stability toward water, and fuel cell performance in polymer electrolyte fuel cells (PEFCs) or direct methanol fuel cells (DMFCs). The structure-property relationship of SPI membranes is discussed in details with respect to the chemical structure of various sulfonated diamines and morphology of SPI membranes from the viewpoints of viscosity, mechanical strength and proton conductivity. Ion exchange capacity (IEC), basicity of sulfonated diamine, configuration (para-, meta-, or ortho-orientation) and chemical structure of polymer chain (linear or net-work) show great influence on the water stability and mechanical strength of SPI membrane. The SPIs with a branched/crosslinked structure and derived from highly basic sulfonated diamines display reasonably high water stability of more than 200-300 h in water at 130 C, suggesting high potential as PEMs operating at temperatures up to 100 C. The SPI membranes have fairly high proton conductivity at higher relative humidities and low methanol permeability. The water and methanol crossover through membrane under the fuel cell operation conditions is not controlled by electro-osmosis due to proton transport but by diffusion due to activity difference. This is quite different from the case of perfluorosulfonated membranes such as Nafion and results in the advantageous effects on fuel cell performance. SPI membranes displayed high PEFC performances comparable to those of Nafion 112. In addition, SPI membranes displayed higher performances in DMFC systems with higher methanol concentration (20-50 wt %), which is superior to Nafion and have high potential for DMFC applications at mediate temperatures (40-80 C In the past decades, great interest has been focused on the development of polymer electrolyte fuel cells (PEFCs) and direct methanol fuel cells (DMFCs) as a clean power source of energy for transportation, stationary and portable power applications.1,2 Fuel cells with high performance, high durability and potentially lower cost are greatly required. Polymer electrolyte membrane (PEM) is one of the key components in PEFC and DMFC systems. Perfluorosulfonic acid copolymer membranes, such as DuPont's Nafion membrane, are the state-of-the-art PEMs commercially available due to their high proton conductivity and excellent chemical stability.3,4 However, because of their high cost, low operational temperature below 80 C and large methanol crossover, there has been much interest in alternative PEMs. Many efforts have been done in the development of PEMs based on sulfonated aromatic hydrocarbon polymers. [5][6][7][8][9] The main problem existed in the hydrocarbon PEMs is the membrane stability under fuel cell conditions and low conducting performance at low moisture atmosphere. The balance between ion exchange capacity (IEC), proton conductivity and mechanical stability of a PEM ...

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“…Use of polyimides with flexible main chains can reduce the stress in water arising from matrix swelling, while the mechanical properties of the polymer remain unchanged in much larger quantities of absorbed water [87][88][89] , however, the mobility of the main chain inhibits repeated recyclization of hydrolyzed imide cycles of polymer.…”

Section: P Ro T O N -Ex C H a N G E M E M B R A N E B A S E D O N Polmentioning

confidence: 99%

Proton-Exchange Membranes Based on Sulfonated Polymers

Sedesheva¹,

Ivanov²,

Wozniak³

et al. 2016

Orient. J. Chem

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Review is dedicated to discussion of different types of proton-exchange membranes used in fuel cells (FC). One of the most promising electrolytes is polymer electrolyte membrane (PEM). In recent years, researchers pay great attention to various non-fluorinated or partially fluorinated hydrocarbon polymers, which may become a real alternative to Nafion. Typical examples are sulfonated polyetheretherketones, polyarylene ethers, polysulphones, polyimides. A class of polyimides-based hydrocarbon proton-exchange membranes is separately considered as promising for widespread use in fuel cell, such membranes are of interest for our further experimental development.

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Degradation of sulfonated polyimide membranes in fuel cell conditions

Cited by 66 publications

References 19 publications

Proton exchange membranes modified with sulfonated silica nanoparticles for direct methanol fuel cells☆

Proton exchange membranes modified with sulfonated silica nanoparticles for direct methanol fuel cells☆

On the Development of Naphthalene-Based Sulfonated Polyimide Membranes for Fuel Cell Applications

Proton-Exchange Membranes Based on Sulfonated Polymers

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