Organic silica/Nafion® composite membrane for direct methanol fuel cells

任素贞,; 孙公权,; 李辰楠,; 梁振兴,; 吴智谋,; 金巍,; Qin, Xin; 杨雪峰,

doi:10.1016/j.memsci.2006.05.050

Cited by 74 publications

(28 citation statements)

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“…For other works that reported the conversion of -SH group to -SO3H group by oxidation were the works from Ren [37] and Kim [38]. Ren and coworkers (2006) used silane coupling agent to enhance the proton conductivity of composite membrane [37].…”

Section: Ftir Characterizationmentioning

confidence: 99%

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Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Prapainainar

Kongkachuichay

et al. 2017

Applied Surface Science

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Highlight Mordenite and analcime were used as fillers in Nafion composite membranes for DMFC. The composite membranes were fabricated by spray method. Methanol permeability was reduced up to 2-3 times using the composite membranes. Mordenite/Naifon membrane showed 2 times higher DMFC performance than Nafion117. AbstractThe aim of this work was to improve proton exchange membranes (PEMs) used in direct methanol fuel cells (DMFCs). A membrane with a high proton conductivity and low methanol permeability was required. Zeolite filler in Nafion (NF matrix) composite membranes were prepared using two types of zeolite, mordenite (MOR) and analcime (ANA). Spray method was used to prepare the composite membranes, and properties of the membranes were investigated: mechanical properties, solubility, water and methanol uptake, ion-exchange capacity (IEC), proton conductivity, methanol permeability, and DMFC performance. It was found that MOR filler showed higher performance than ANA. The MOR/Nafion composite membrane gave better properties than ANA/Nafion composite membrane, including a higher proton conductivity and a methanol permeability that was 2 -3 times lower. The highest DMFC performance (10.75 mW·cm -2 ) was obtained at 70 °C and with 2 M methanol, with a value 1.5 times higher than that of ANA/Nafion composite membrane and two times higher than that of commercial Nafion 117 (NF 117).

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Section: Ftir Characterizationmentioning

confidence: 99%

“…Ren and coworkers (2006) used silane coupling agent to enhance the proton conductivity of composite membrane [37]. They reported the treatment of thiol group (-SH) in mercaptopropyl methyldimethoxysilane using H2O2.…”

Section: Ftir Characterizationmentioning

confidence: 99%

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Prapainainar

Kongkachuichay

et al. 2017

Applied Surface Science

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“…1 Several strategies have been pursued to lower methanol permeability in Nafion membranes. A few examples are incorporation of organic Si or inorganic silica additives into Nafion membrane, 2,3 partial substitution of the sulfonic acid groups by Cs + ions, 4 impregnation of Pd or PtRu into Nafion membrane, 5,6 applying a plasma 7 or electron beam 8 to modify the surface structure of Nafion, creation of a thin methanol impermeable barrier at the membrane surface, and addition of polymers such as polyfurfuryl alcohol, 9 poly͑vinyl alcohol͒, 10 and poly͑3,4-ethylenedioxythiophene͒ 11 to form a composite membrane. Although these approaches reduce methanol crossover, they generally tend to decrease proton conductivity and sometimes lead to a loss in the mechanical strength.…”

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confidence: 99%

Blend Membranes Consisting of Sulfonated Poly(ether ether ketone) and Polysulfone Bearing 4-Nitrobenzimidazole for Direct Methanol Fuel Cells

Li¹,

Fu²,

Manthiram³

et al. 2009

J. Electrochem. Soc.

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=1884314&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=1884314&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1149/1.3040242 Society, 156, 2, pp. B258-B263, 2009 Blend Low-cost blend membranes consisting of sulfonated poly͑ether ether ketone͒͑ SPEEK͒͑ an acidic polymer͒ and polysulfone-4-nitrobenzimidazole ͑PSf-NBIm͒͑ a basic polymer͒ have been prepared with various PSf-NBIm contents ͑0-5.0 wt %͒ and characterized by ion-exchange capacity, proton conductivity, and water uptake measurements. The blend membranes with PSf-NBIm contents of 2.5 and 5.0 wt % show higher proton conductivity and lower water uptake in water and methanol/water solutions at a given temperature than plain SPEEK. The blend membranes also exhibit better electrochemical performance and lower methanol crossover in a direct methanol fuel cell than plain SPEEK and Nafion 115 membranes due to an enhancement in proton conductivity through acid-base interactions and an insertion of the benzimidazole side groups into the ionic clusters of SPEEK, as indicated by small-angle X-ray scattering. The maximum power density of the blend membrane with a PSf-NBIm content of 2.5 wt % is 1.5 times higher than that of the Nafion 115 in 1 M methanol solution at 80°C. Journal of te Electrochemical

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“…65 summarized the materials which commonly used in DAFC membrane, which are the Nafion from Dupont, Sulfonated Poly ether ether ketone (SPEEK), and polyvinyl acetate (PVA). A lot of researchers [69][70][71][72][73][74][75][76][77][78][79][80] developed composites based on those materials to improve the efficiency of the DAFC. The development occurred in both PEM and AEM.…”

Section: Membrane In Direct Alcohol Fuel Cellsmentioning

confidence: 99%

Recent advances on Zeolite modification for direct alcohol fuel cells (DAFCs)

Makertihartha¹,

Zunita²,

Rizki³

et al. 2017

AIP Conference Proceedings

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Abstract. The increase of energy demand and global warming issues has driven studies of alternative energy sources. The polymer electrolyte membrane fuel cell (PEMFC) can be an alternative energy source by (partially) replacing the use of fossil fuel which is in line with the green technology concept. However, the usage of hydrogen as a fuel has several disadvantages mainly transportation and storage related to its safety aspects. Recently, alcohol has gained attention as an energy source for fuel cell application, namely direct alcohol fuel cell (DAFC). Among alcohols, high-mass energy density methanol and ethanol are widely used as direct methanol fuel cell (DMFC) and direct ethanol fuel cell (DEFC), respectively. Currently, the performance of DMFC is still rudimentary. Furthermore, the use of ethanol gives some additional privileges such as non-toxic property, renewable, ease of production in great quantity by the fermentation of sugar-containing raw materials. Direct alcohol fuel cell (DAFC) still has weakness in the low proton conductivity and high alcohol crossover. Therefore, to increase the performance of DAFC, modification using zeolite has been performed to improve proton conductivity and decrease alcohol crossover. Zeolite also has high thermal resistance properties, thereby increasing DAFC performance. This paper will discuss briefly about modification of catalyst and membrane for DAFC using zeolite. Zeolite modification effect on fuel cell performance especially proton conductivity and alcohol crossover will be presented in detail.

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Organic silica/Nafion® composite membrane for direct methanol fuel cells

Cited by 74 publications

References 0 publications

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Blend Membranes Consisting of Sulfonated Poly(ether ether ketone) and Polysulfone Bearing 4-Nitrobenzimidazole for Direct Methanol Fuel Cells

Recent advances on Zeolite modification for direct alcohol fuel cells (DAFCs)

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