Formation and evaluation of semi-IPN of nafion 117 membrane for direct methanol fuel cell

Kundu, Patit Paban; Kim, Beom Taek; Ahn, Ji Eun; Han, Hye Sung; Shul, Yong Gun

doi:10.1016/j.jpowsour.2006.10.099

Cited by 53 publications

(27 citation statements)

References 19 publications

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“…The PVC/PSSA semi-IPN membrane showed a high power density (maximum power density = 740 mW•cm 2 ) which is twice than that of Nafion ® 117 (380 mW•cm 2 ). In addition, a PSSA-DVB polymer network has also been combined with a Nafion ® 117 linear polymer using a similar approach and showed a dramatic improvement in power density performance [141]. These results indicate that the formation of semi-IPN membranes offers promise for PEMFC applications.…”

Section: Sulfonated Polymer Network Based Semi-ipn Membranesmentioning

confidence: 90%

“…However, the PVA/PAMPS based semi-IPN system needs to introduce a third medium by grafting or blending into the PVA network to overcome the membrane's shortcomings of being stiff and brittle. When PSSA or PAMPS is formed as crosslinked structure, it requires to be associated with another polymer, such as poly (vinylidene fluoride) (PVDF) [88,136], poly (tetrafluoroethylene) (PTFE) [137,138], poly (vinyl chloride) (PVC) [139], Nafion ® [140,141], and PVA [88], in order to obtain adequate mechanical and swelling properties.…”

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confidence: 99%

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Water Soluble Polymers as Proton Exchange Membranes for Fuel Cells

2012

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Abstract:The relentless increase in the demand for useable power from energy-hungry economies continues to drive energy-material related research. Fuel cells, as a future potential power source that provide clean-at-the-point-of-use power offer many advantages such as high efficiency, high energy density, quiet operation, and environmental friendliness. Critical to the operation of the fuel cell is the proton exchange membrane (polymer electrolyte membrane) responsible for internal proton transport from the anode to the cathode. PEMs have the following requirements: high protonic conductivity, low electronic conductivity, impermeability to fuel gas or liquid, good mechanical toughness in both the dry and hydrated states, and high oxidative and hydrolytic stability in the actual fuel cell environment. Water soluble polymers represent an immensely diverse class of polymers. In this comprehensive review the initial focus is on those members of this group that have attracted publication interest, principally: chitosan, poly (ethylene glycol), poly (vinyl alcohol), poly (vinylpyrrolidone), poly (2-acrylamido-2-methyl-1-propanesulfonic acid) and poly (styrene sulfonic acid). The paper then considers in detail the relationship of structure to functionality in the context of polymer blends and polymer based networks together with the effects of membrane crosslinking on IPN and semi IPN architectures. This is followed by a review of pore-filling and other impregnation approaches. Throughout the paper detailed numerical results are given for comparison to today's state-of-the-art Nafion ® based materials.

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Section: Sulfonated Polymer Network Based Semi-ipn Membranesmentioning

confidence: 90%

mentioning

confidence: 99%

Water Soluble Polymers as Proton Exchange Membranes for Fuel Cells

2012

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“…After a crosslinking treatment, the polymer matrix forms a network where the macromolecular chain of polyelectrolyte is immobilized and compacted [16][17][18][19]. Plenty of work has been done to use the cross-linking method in the area of PEMs to reduce the methanol crossover successfully for DMFCs [20][21][22]. However, in most of these cases, proton conductivity decreased significantly due to diminishing the free protons of conductive materials or the addition of non-conductive materials.…”

Section: Introductionmentioning

confidence: 99%

Novel hybrid polymer electrolyte membranes with high proton conductivity prepared by a silane-crosslinking technique for direct methanol fuel cells

Lin

Zhao

Jiang

et al. 2011

Journal of Power Sources

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“…Indeed, the DMFC performances are at least equal to that of Nafion ® when more than 60 wt% of AMPS are introduced in the Nafion ® /AMPS semi-IPN and the methanol permeability of these semi-IPNs is similar to that of Nafion ® . By contrast, the performances of a DMFC operating with a semi-IPN made of a poly (styrene sulfonate) network is significantly lower than those obtained with Nafion ® [15]. Thereby, associate a polyelectrolyte network with Nafion ® does not seem to lead to reduce its sensitivity to aging and swellingedeswelling cycles in DMFC.…”

Section: Introductionmentioning

confidence: 82%