Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Means for distributing – storing – or preventing fluid movement
Reexamination Certificate
2011-04-19
2011-04-19
Apicella, Karie O'Neill (Department: 1726)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Means for distributing, storing, or preventing fluid movement
C429S515000, C429S400000
Reexamination Certificate
active
07927760
ABSTRACT:
A direct methanol fuel cell unit is provided with a fuel cell including an anode, a cathode with a hydrophobic microporous layer, an electrolyte membrane put in-between, and a fuel supply path supplying fuel to the anode. The fuel supply path is provided with an upwind water barrier preventing back-diffusion of water and a gas flow path channeling gas generated at the anode and disposed between the barrier and the anode. A water-rich zone is formed between the water barrier and the cathode microporous layer. Water loss from either side of this zone is eliminated or minimized, thereby permitting direct use of highly concentrated methanol in the fuel flow path with good fuel efficiency and power performance. The cell unit can be applied equally well to both an active circulating air cathode and an air-breathing cathode.
REFERENCES:
patent: 5599638 (1997-02-01), Surampudi et al.
patent: 6808838 (2004-10-01), Wilson
patent: 7255947 (2007-08-01), Becerra et al.
patent: 7407721 (2008-08-01), Ren et al.
patent: 2004/0209136 (2004-10-01), Ren et al.
patent: 2004/0209154 (2004-10-01), Ren et al.
patent: 2005/0130009 (2005-06-01), Hasegawa et al.
patent: 2007/0087234 (2007-04-01), Wang et al.
patent: WO 2004/093231 (2004-10-01), None
C. Lim, et al. “Development of high-power electrodes for a liquid-feed direct methanol fuel cell” Journal of Power Sources 113 (2003), pp. 145-150.
Lim and Wang, High Performance Electrode Fabrication for Direct Methanol Fuel Cells, 201st Electrochemical Society Meeting, May 2002, Philadelphia, PA, US.
Kim, Sumner, Harrison, Riffle, McGrath, and Pivovar, Direct Methanol Fuel Cell Performance of Disulfonated Poly(arylene ether benzonitrile) Copolymers, Journal of the Electrochemical Society, 151 (12) A2150-A2156 (Dec. 2004).
Liu Fuqiang
Liu Wenpeng
Lu Guoqiang
Matsuoka Kei
Sakaue Eiichi
Apicella Karie O'Neill
Kabushiki Kaisha Toshiba
Law Office of John K. Pike, PLLC
Pike John K.
The Penn State Research Foundation
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