Natural and synthetic solid polymer hybrid dual network membranes as electrolytes for direct methanol fuel cells

Meenakshi, S.; Bhat, Santoshkumar D.; Sahu, A. K.; Alwin, S.; Sridhar, P.; Pitchumani, S.

doi:10.1007/s10008-011-1587-1

Cited by 31 publications

(12 citation statements)

References 71 publications

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“…Nevertheless, most recent studies were more successful. Few composite electrolytes have been developed with selectivity up to several times higher and proton conductivity only slightly lower than the same of Nafion (7). Similar achievements were demonstrated in organically modified PVA electrolytes without fillers (3,(8)(9)(10).…”

Section: Introductionmentioning

confidence: 75%

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Polyvinyl Alcohol Based Nanocomposite Membranes Containing Aluminum Hydroxide Gel

2013

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Cross-linked PVA/Al(OH) 3 nanocomposite polymer membranes with a very small thickness were produced by diluted acidic solution casting. Dry and wet membranes were characterized by impedance spectroscopy and densitometry. Wet membranes had shown pure ionic conductivity of the order of 10 -3 S/cm at 90 o C and optimal filler content between 3 and 7 wt. % corresponding to pre-coagulation condition as revealed by hydrostatic densitometry. Temperature dependence of conductivity was in good accordance with VTF model. Considering very small thickness of cross-linked films, such membranes are promising for use in DMFC due to high expected specific power.

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Section: Introductionmentioning

confidence: 75%

“…Dual chitosan/PVA electrolyte filled with 10 wt. % SWA and crosslinked with sulfosuccinic acid and glutaraldehyde had demonstrated at the same conditions load current density 400 mA⋅cm -2 and specific power about 156 mW⋅cm -2 (7).…”

Section: Introductionmentioning

confidence: 98%

Polyvinyl Alcohol Based Nanocomposite Membranes Containing Aluminum Hydroxide Gel

2013

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“…Meenakshi et al fabricated hybrid dual‐network membranes comprising CS‐PVA networks crosslinked with SSA and glutaraldehyde and modified with stabilized SiWA for DMFC applications . The maximum proton conductivity of 1.6 S m −1 at 100 °C was higher than that of NAFION 117 under the same conditions.…”

Section: Achievements Of the Nanophase Separation Technologiesmentioning

confidence: 99%

Improving the Overall Characteristics of Proton Exchange Membranes via Nanophase Separation Technologies: A Progress Review

Yan

et al. 2017

Fuel Cells

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Proton exchange membrane (PEM) is one of the essential materials for proton exchange membrane fuel cells (PEMCF). The improvement of comprehensive characteristics of proton exchange membrane represents one of the most critical challenges for the large scale commercialization of proton exchange membrane fuel cells. In this paper, we review the recent developments of proton exchange membrane via nanophase separation technologies.

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“…The proton conductivity of the composite membranes was calculated from the membrane resistance using alternating current impedance spectroscopy using a multipotentiostat (Bio-Logic SAS, France) [20]. Fully hydrated membranes with 1-cm 2 effective area were sandwiched between two stainless steel electrodes.…”

Section: Proton Conductivitymentioning

confidence: 99%

SPEES/PEI-based highly selective polymer electrolyte membranes for DMFC application

Neelakandan

Kanagaraj

Sabarathinam

et al. 2015

J Solid State Electrochem

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Polymer composite membranes based on sulfonated poly(phenylene ether ether sulfone) (SPEES) membrane with varying concentrations of poly(ether imide) (PEI) were prepared. The sulfonation of PEES was carried out with concentrated sulfuric acid at 10°C, and the sulfonation degree was maintained as 70 %. The introduction of PEI into the hydrophilic SPEES matrix provided good chemical stability to the membrane. The water uptake, ion exchange capacity, and proton conductivity decrease with increasing PEI content. Scanning electron microscopy (SEM) indicates that PEI particles are homogeneously dispersed into the composite membrane. Thermogravimetric analysis (TGA) showed that all the composite membranes exhibited good thermal stability. On the other hand, the methanol permeability of the composite membranes gradually decreases from 4.23 × 10 −7 cm 2 s −1 to 8.84 × 10 −8 cm 2 s −1 , which is lower than that of the Nafion 117 membrane. The relative selectivity of the PEI-incorporated SPEES membranes was higher than that of the Nafion membranes. From the observed results, the prepared SPEES/ PEI-15 composite membrane can be considered as apposite polymer electrolyte membranes for the application of direct methanol fuel cells (DMFCs).

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Natural and synthetic solid polymer hybrid dual network membranes as electrolytes for direct methanol fuel cells

Cited by 31 publications

References 71 publications

Polyvinyl Alcohol Based Nanocomposite Membranes Containing Aluminum Hydroxide Gel

Polyvinyl Alcohol Based Nanocomposite Membranes Containing Aluminum Hydroxide Gel

Improving the Overall Characteristics of Proton Exchange Membranes via Nanophase Separation Technologies: A Progress Review

SPEES/PEI-based highly selective polymer electrolyte membranes for DMFC application

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