Surface modification of sulfonated poly(ether ether ketone) membranes using Nafion solution for direct methanol fuel cells

Ren, Shan; Li, Chennan; Zhao, Xinsheng; Wu, Zhimo; Wang, Suli; Sun, Gongquan; Xin, Qin; Yang, Xuefeng

doi:10.1016/j.memsci.2004.09.006

Cited by 93 publications

(33 citation statements)

References 15 publications

(20 reference statements)

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“…This concept was based on the performance difference between homogenous membrane and heterogenous membrane reported in [25,30,31]. Multilayered membranes containing five thin layers of SPEEK are found to significantly reduce the swelling ratio and maintain high proton transfer ability; five thin layers of PVA are determined to block methanol crossover piece by piece efficiently.…”

Section: Resultsmentioning

confidence: 99%

“…Recent years, a few researches have been conducted on the heterogeneous membranes such as multilayered membrane [25,30,31], which can offer satisfactory performance. Ren immersed SPEEK into Nafion containing casting solution to prepared Nafion-SPEEK-Nafion composite membranes.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the separations in practical application might be an anxious problem. Moreover, the proton conductivity of the multilayered membrane might be restricted by the layer with poor proton transfer ability just as the major dependence of methanol crossover upon the layer with low methanol permeability [25,30,31]. In view of these problems, we present here a multilayered membrane containing five thin SPEEK layers and five thin PVA layers, above two kinds of layers were located alternatively.…”

Section: Introductionmentioning

confidence: 99%

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Multilayer Membranes Based on Sulfonated Poly(Ether Ether Ketone) and Poly(Vinyl Alcohol) for Direct Methanol Membrane Fuel Cells

Yang¹,

Zhang²,

Gao³

et al. 2009

TOFCJ

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Much work has been conducted on the substitutes for Nafion as proton exchange membrane materials. Some researches are focused on the heterogeneous multilayered membranes reported by R. Jiang [J. Electrochem. Soc. 153 (2006) (2005) 59]. However, just as the dependence of methanol crossover upon the layer with the lowest permeability, the proton transfer ability is major confined by the layer with the poorest conductivity. Moreover, various swelling ratio and contractibility of sub-layers will make the hidden problems of separation between catalyst layer and proton exchange membrane become more obvious. We present here a multilayered membranes containing five thin layers of sulfonated poly(ether ether ketone)(SPEEK) and five thin layers of poly(vinyl alcohol)(PVA). SPEEK layers and PVA layers were located alternatively in the composite membrane. The swelling behaviors of PVA layer are restrained by both sideward SPEEK layers. Methanol crossover is efficiently alleviated piece by piece without visible proton conductivity loss. The preliminary investigation in DMFC suggests its promising application as resisting methanol and proton exchange membrane.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multilayer Membranes Based on Sulfonated Poly(Ether Ether Ketone) and Poly(Vinyl Alcohol) for Direct Methanol Membrane Fuel Cells

Yang¹,

Zhang²,

Gao³

et al. 2009

TOFCJ

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“…The acid-base Nafion composite membranes include blends of Nafion with polypyrrole (PPy) [98][99][100][101][102][103][104], polybenzimidazole (PBI) [105][106][107], poly (propyleneoxide) (PPO) [108,109], polyfurfuryl alcohol (PFA) [110], poly(vinyl alcohol) (PVA) [111][112][113][114][115], sulfonated phenol-formaldehyde (sPF) [116], polyvinylidene fluoride (PVdF) [117][118][119][120][121][122], poly(p-phenylene vinylene) (PPV) [123], poly(vinyl pyrrolidone) (PVP) [124] polyaniline (PANI) [125][126][127][128], polyethylene (PE) [129], poly(ethylene-terephtalate) [130], sulfated β-cyclodextrin (sCD) [131], sulfonated poly(ether ether ketone) (sPEEK) [132][133][134][135], sulfonated poly(aryl ether ketone) (sPAEK) [136], poly(arylene ether sulfone) (PAES) [137], poly(vinylimidazole) (PVI) [138], poly(vinyl pyridine) (PVPy) [139], poly (tetrafluoroethylene) (PTFE) [140][141]<...>…”

Section: Polymer/nafion Blendsmentioning

confidence: 99%

Membranes for Direct Alcohol Fuel Cells

Corti

2013

Direct Alcohol Fuel Cells

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This chapter is devoted to summarize and discuss the main properties of ionomeric membranes used in direct alcohol PEM fuel cells. Although Nafion is the proton exchange membrane commonly used in methanol and other direct alcohol fuel cells, other proton and alkaline membranes are being investigated in order to improve the efficiency of DAFC. The goals in the development of this critical component of DAFC are: low cost, long durability, low alcohol permeability and high electrical conductivity. The last two properties can be combined in a single parameter, the membrane selectivity that accounts for the ratio between the proton and alcohol transport through the membrane. This parameter can be compared to that measured for Nafion to define a relative selectivity, which is a primary parameter to evaluate the potentiality of a ionomer material to be used in alcohol feed fuel cells.The vast catalogue of polymeric materials reviewed here included Nafion composite with inorganic and organic fillers, and non-fluorinated proton conducting membranes such as sulfonated polyimides, poly(arylene ether)s, polysulfones, poly (vinyl alcohol), polystyrenes, and acid-doped polybenzimidazoles. Anionexchange membranes are also discussed because of the facile electro-oxidation of alcohols in alkaline media and because of the minimization of alcohol crossover in alkaline direct alcohol fuel cells.The performance of different types of membranes in direct alcohol fuel cells, mainly methanol, are summarized and discussed in order to identify the most promissory ones. The lack of correlation between the relative selectivity and fuel cell performance of the membranes indicates that the architecture of the three

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“…In recent years, some new proton exchange membranes (PEMs) have been successfully proposed such as polymer blend membranes [8]- [12] and polymer composite membranes. Several inorganic materials have been applied for this purpose such as montmorillonite [13], [14], silicon dioxide, titanium dioxide and zirconium oxide [4].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Sulfonated Poly (Ether Ether Ketone) Nanocomposite Membranes

Sonpingkam¹,

Pattavarakorn²

2014

IJCEA

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Surface modification of sulfonated poly(ether ether ketone) membranes using Nafion solution for direct methanol fuel cells

Cited by 93 publications

References 15 publications

Multilayer Membranes Based on Sulfonated Poly(Ether Ether Ketone) and Poly(Vinyl Alcohol) for Direct Methanol Membrane Fuel Cells

Multilayer Membranes Based on Sulfonated Poly(Ether Ether Ketone) and Poly(Vinyl Alcohol) for Direct Methanol Membrane Fuel Cells

Membranes for Direct Alcohol Fuel Cells

Mechanical Properties of Sulfonated Poly (Ether Ether Ketone) Nanocomposite Membranes

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