Compositions – Electrically conductive or emissive compositions – Metal compound containing
Reexamination Certificate
2006-05-23
2010-11-30
Mc Ginty, Douglas (Department: 1796)
Compositions
Electrically conductive or emissive compositions
Metal compound containing
C252S519300, C252S519310, C252S518100, C252S519400, C252S520220, C429S047000, C423S608000
Reexamination Certificate
active
07842199
ABSTRACT:
A proton conducting titanate includes titanate and a sulfonic acid group-containing moiety having proton conductivity introduced into the surface of the titanate, in which the sulfonic acid group-containing moiety is directly bound to the titanate via an ether bond (—O). A polymer nano-composite membrane includes the proton conducting titanate, and a fuel cell includes the polymer nano-composite membrane. The proton conducting titanate is provided with a sulfonic acid functional group having proton conductivity, which increases the proton conductivity of the polymer nano-composite membrane. The polymer nano-composite membrane includes the proton conducting titanate, and thus can have a controllable degree of swelling in a methanol solution, and the transmittance of the polymer nano-composite membrane can be reduced. The polymer nano-composite membrane can be used as a proton conducting membrane in fuel cells to improve the thermal stability, energy density, and fuel efficiency of the fuel cells.
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Chang Hyuk
Kim Hae-kyoung
Kim Young-kwon
Lee Jae-sung
Christie Parker & Hale LLP
Ginty Douglas Mc
Samsung SDI & Co., Ltd.
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