Journal ArticleDOI
Sulfonated poly(ether sulfone)/phosphotungstic acid/attapulgite composite membranes for direct methanol fuel cells
TLDR
In this article, a novel composite sulfonated poly(ether sulfone)(SPES)/phosphotungstic acid (PWA)/attapulgite (AT) membranes were investigated for direct methanol fuel cells (DMFCs).Abstract:
Novel composite sulfonated poly(ether sulfone)(SPES)/phosphotungstic acid (PWA)/attapulgite (AT) membranes were investigated for direct methanol fuel cells (DMFCs). Physical–chemical properties of the composite membranes were characterized by FTIR, DSC, TGA, SEM-EDX, water uptake, tensile test, proton conductivity, and methanol permeability. Compared with a pure SPES membrane, PWA, and AT doping in the membrane led to a higher thermal stability and glass transition temperature (Tg) as revealed by TGA and DSC. Tensile test indicated that lower AT content (3%) in the composite can significantly increase the tensile strength, while higher AT loading demonstrated a smaller contribution on strength. Proper PWA and AT loadings in the composite membranes can increase the proton conductivity and lower the methanol cross-over. The proton conductivity of the SPES-P-A 10% composite membrane reached 60% of the Nafion 112 membrane conductivity at room temperature while the methanol permeability was only one-fourth of that of Nafion 112 membrane. This excellent performances of SPES/PWA/AT composite membranes could indicate a potential feasibility as a promising electrolyte for DMFC. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011read more
Citations
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Journal ArticleDOI
A review of polymer–nanocomposite electrolyte membranes for fuel cell application
TL;DR: In this article, the authors have reviewed several alternatives for the fabrication and evaluation of polymer electrolyte and composite membranes for fuel cell applications, including hybrid organic-inorganic composite membrane.
Journal ArticleDOI
High level of solid superacid coated poly(vinylidene fluoride) electrospun nanofiber composite polymer electrolyte membranes
Gong Chunli,Hai Liu,Zhang Bingqing,Guangjin Wang,Cheng Fan,Zheng Genwen,Sheng Wen,Zhigang Xue,Xiaolin Xie +8 more
TL;DR: In this article, a polydopamine-assisted polyvinylidene fluoride (PVDF/PWA) coating was used to construct a three-dimensional proton conducting network.
Journal ArticleDOI
Novel sulfonated poly (ether ether ketone)/silica coated carbon nanotubes high-performance composite membranes for direct methanol fuel cell
TL;DR: In this article, silica-coated carbon nanotubes (SiO2@CNTs) were successfully prepared by a simple sol-gel process and then used as a new additive in the preparation of sulfonated poly (ether ether ketone) (SPEEK)-based composite membranes.
Journal ArticleDOI
A poly(vinyl alcohol)-based composite membrane with immobilized phosphotungstic acid molecules for direct methanol fuel cells
TL;DR: In this article, carbon nanotubes (CNTs) and poly(diallyldimethylammonium chloride) (PDDA) were used to construct a methanol-blocking membrane for direct methanoline fuel cell (DMFC) application.
Journal ArticleDOI
Hybrid proton exchange membrane of sulfonated poly(ether ether ketone) containing polydopamine-coated carbon nanotubes loaded phosphotungstic acid for vanadium redox flow battery
TL;DR: In this article, a hybrid membrane of sulfonated poly(ether ether ketone)/polydopamine-coated carbon nanotubes loaded with phosphotungstic acid (S/DCNTs-HPW) is proposed for vanadium redox flow battery (VRFB).
References
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Journal ArticleDOI
Alternative Polymer Systems for Proton Exchange Membranes (PEMs)
TL;DR: Devising systems that can conduct protons with little or no water is perhaps the greatest challenge for new membrane materials, and new membranes that have significantly reduced methanol permeability and water transport (through diffusion and electro-osmotic drag) are required for automotive applications.
Journal ArticleDOI
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TL;DR: In this paper, the authors present an overview of the synthesis, chemical and electrochemical properties, and polymer electrolyte fuel cell applications of new proton-conducting polymers based on hydrocarbon polymers.
Journal ArticleDOI
Methanol oxidation and direct methanol fuel cells: a selective review
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TL;DR: A status report on development of the direct methanol fuel cell (DMFC) and relevant fundamental and applied electrochemistry is the objective of as discussed by the authors, where emphasis is put on strategies and approaches rather than on individual results.
Journal Article
The structural scheme of attapulgite
TL;DR: The name attapulgite was applied in 1935 by J. De Lapparentl to a clay mineral which he encountered in fuller's earths from Attapulegus, Georgia and Mormoiron, France as mentioned in this paper.
Journal ArticleDOI
Partially sulfonated poly(arylene ether sulfone) : a versatile proton conducting membrane material for modern energy conversion technologies
TL;DR: In this article, a versatile in-situ crosslinking technique was developed to crosslink the sulfonated poly (arylene ether sulfone) electrolytes during membrane processing in order to substantially reduce water swelling without impairing other membrane properties such as proton conductivity.