Grafting of styrene on to Nafion membranes using supercritical CO2 impregnation for direct methanol fuel cells

ABSTRACTComposite Nafion membranes containing various amounts of TiO2 (3%, 5% and 10%) were prepared by using a recast procedure for application in high temperature Direct Methanol Fuel Cells (DMFCs). The electrochemical behaviour was compared to that of a membrane-electrode assembly (MEA) based on a bare recast Nafion membrane. All the MEAs containing the Nafion-titania membranes were able to operate up to 145°C, whereas the assembly equipped with the bare recast Nafion membrane showed the maximum performance at 120°C. A maximum power density of 340 mW cm-2 was achieved at 145°C with the composite membrane in the presence of oxygen feed, whereas the maximum power density with air feed was about 210 mW cm-2.

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Surface modification of Nafion membranes by ion implantation to reduce methanol crossover in direct methanol fuel cells

RSC Advances ◽

10.1039/c6ra12756h ◽

2016 ◽

Vol 6 (67) ◽

pp. 62467-62470 ◽

Cited By ~ 13

Author(s):

Jung-Soo Lee ◽

In-Tae Hwang ◽

Chan-Hee Jung ◽

Jae-Hak Choi

Keyword(s):

Surface Modification ◽

Fuel Cells ◽

Ion Implantation ◽

Direct Methanol Fuel Cells ◽

Membrane Properties ◽

Methanol Crossover ◽

Nafion Membranes ◽

Direct Methanol ◽

Bulk Membrane ◽

Methanol Fuel Cells

The surface of Nafion membranes was modified by light ion implantation to reduce methanol crossover without affecting bulk membrane properties.

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Pd and Pd-Cu Alloy Deposited Nafion Membranes for Reduction of Methanol Crossover in Direct Methanol Fuel Cells

Journal of The Electrochemical Society ◽

10.1149/1.1926671 ◽

2005 ◽

Vol 152 (7) ◽

pp. A1390 ◽

Cited By ~ 53

Author(s):

J. Prabhuram ◽

T. S. Zhao ◽

Z. X. Liang ◽

H. Yang ◽

C. W. Wong

Keyword(s):

Fuel Cells ◽

Direct Methanol Fuel Cells ◽

Methanol Crossover ◽

Cu Alloy ◽

Nafion Membranes ◽

Direct Methanol ◽

Methanol Fuel Cells

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Comparison of the small angle X-ray scattering study of sulfonated poly(etheretherketone) and Nafion membranes for direct methanol fuel cells

Journal of Power Sources ◽

10.1016/j.jpowsour.2005.03.185 ◽

2006 ◽

Vol 153 (1) ◽

pp. 29-35 ◽

Cited By ~ 65

Author(s):

B. Yang ◽

A. Manthiram

Keyword(s):

Fuel Cells ◽

Small Angle ◽

Direct Methanol Fuel Cells ◽

X Ray ◽

X Ray Scattering ◽

Nafion Membranes ◽

Direct Methanol ◽

Scattering Study ◽

Methanol Fuel Cells ◽

Sulfonated Poly

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Modified Nafion Membranes by Catalytic Materials for Direct Methanol Fuel Cells Applications

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.684.90 ◽

2013 ◽

Vol 684 ◽

pp. 90-93

Author(s):

Ai Hua Tian ◽

Dong Hui Shen

Keyword(s):

Fuel Cells ◽

Sodium Dodecyl Sulfate ◽

Direct Methanol Fuel Cells ◽

Sodium Dodecyl ◽

Membrane Electrode ◽

Catalytic Materials ◽

Nafion Membranes ◽

Dodecyl Sulfate ◽

Direct Methanol ◽

Methanol Fuel Cells

Sodium dodecyl sulfate/Pt composites and sodium dodecyl sulfate/Pd composites have been synthesized and used to modify the surface of Nafion membrane. Modified Nafion membranes have been characterized by Fourier transform infrared spectroscopy (FTIR). The properties of the modified membranes, in terms of their conductivity and the performance of the membrane electrode assembly (MEA) in the direct methanol fuel cells (DMFCs), have been analyzed and compared with those of the bare Nafion. It is found that the DMFC performance of the membranes modified by two kinds of catalytic materials are better than that of the bare Nafion when operated with 2.0 M methanol. The good conductivity and high cell performance makes the modified Nafion interesting candidates for DMFCs applications.

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