Nanocomposite electrolyte membrane and fuel cell employing...

Details Nanocomposite electrolyte membrane and fuel cell employing... Nanocomposite electrolyte membrane and fuel cell employing...

2008-04-15

2008-04-15

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S006000, C524S445000, C521S027000

Reexamination Certificate

active

07357999

ABSTRACT:
A nanocomposite electrolyte membrane capable of suppressing cross-over of a polar organic fuel and a fuel cell using the nanocomposite electrolyte membrane are provided. The nanocomposite electrolyte membrane for a fuel cell includes a polymer having cation exchange groups and silicate nanoparticles dispersed in the polymer, the silicate nanoparticles having a layered structure, and the silicate nanoparticles being intercalated with the polymer, or layers of the silicate nanoparticles being exfoliated. The nanocomposite electrolyte membrane has an improved ability to suppress permeation of polar organic fuels, such as methanol, and appropriate ionic conductivity. In addition, a fuel cell with the nanocomposite electrolyte membrane can effectively prevent cross-over of methanol used as a fuel, thereby providing improved working efficiency and extended lifespan.

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Korean Patent Office Action and English Translation.
Japanese Office Action dated Apr. 19, 2005.
Chinese Office Action and English Translation dated Jun. 24, 2005.

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