Proton Conductivity and Methanol Permeability of Cellulose Sulfate Membranes

Kasai, Yutaka; Akahira, Akira; Abudula, Abuliti; Urayama, Kenji; Takigawa, Toshikazu

doi:10.1295/koron.66.130

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…32 Kasai et al showed that cross-linked cellulose sulfate membranes have half the methanol permeation compared to that of Nafion 112 while exhibiting proton conductivity of 81 mS cm −1 at room temperature. 33 Ladhar et al mixed nanocllulose with natural rubber and reported a maximum conductivity of 6 × 10 −3 mS cm −1 for a 15 wt % CNC-containing composite. 34 However, the conductivity of pure nanocellulose was not reported.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Lin et al modified bacterial cellulose membranes with 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) using ultraviolet light-induced grafting polymerization, resulting in membranes with approximately half the methanol permeability of Nafion 115 and a DMFC power density of 16 mW cm –2 . Kasai et al showed that cross-linked cellulose sulfate membranes have half the methanol permeation compared to that of Nafion 112 while exhibiting proton conductivity of 81 mS cm –1 at room temperature . Ladhar et al mixed nanocllulose with natural rubber and reported a maximum conductivity of 6 × 10 –3 mS cm –1 for a 15 wt % CNC-containing composite .…”

Section: Introductionmentioning

confidence: 99%

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High Temperature Proton Conduction in Nanocellulose Membranes: Paper Fuel Cells

Bayer

Cunning

Selyanchyn³

et al. 2016

Chem. Mater.

143

142

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Polymer electrolyte membrane fuel cells (PEFCs) are an efficient and clean alternative power source, but the high cost impedes widespread commercialization. The fuel cell membrane, e.g. Nafion, contributes significantly to this cost, and therefore novel alternatives are required. Temperature is also an important factor; high temperature operation leads to faster reaction kinetics, lower electrocatalyst loading, and improved water management, thereby further reducing cost. However, higher temperature puts greater demands on the membrane. Conductivity is related strongly to humidification and therefore this generally decreases above 100°C. Nanocellulose membranes for fuel cells, in which the proton conductivity increases up to 120°C, are here reported for the first time. The hydrogen barrier properties are far superior to conventional ionomer membranes. Fuel cells with nanocellulose membranes are successfully operated at 80°C. Additionally, these membranes are environmentally friendly and biodegradable.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Temperature Proton Conduction in Nanocellulose Membranes: Paper Fuel Cells

Bayer

Cunning

Selyanchyn³

et al. 2016

Chem. Mater.

143

142

View full text Add to dashboard Cite

show abstract

“…1 Although the power density was higher than other membranes based on BC, 2,3 the cell performance still needed to be improved. The methodologies for performance enhancement include modifying membranes, 4 changing catalyst loading 5 and the dosage of Nafion, 6 alternating fabrication methods of catalyst layer 7 and optimizing hotpressing conditions 8 and so on. Specifically, in theory, different membranes hot-pressed under different conditions should be tested in PEMFCs.…”

mentioning

confidence: 99%