US Patent No: 7,201,993
Number of patents in Portfolio can not be more than 2000
Polymer electrolyte fuel cell
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Apr 10, 2007
Issued date -
Aug 3, 2001
filing date -
10/089,814
serial no -
In Force
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Abstract
The present invention provides a polymer electrolyte fuel cell having an increased reaction area by forming a gas channel, a proton channel and an electron channel very close to each other inside a catalyst layer. This polymer electrolyte fuel cell includes a hydrogen ion conductive polymer electrolyte membrane; and a pair of electrodes having catalyst layers sandwiching the hydrogen ion conductive polymer electrolyte membrane between them and gas diffusion layers in contact with the catalyst layers, in which the catalyst layer of at least one of the electrodes comprises carbon particles supporting a noble metal catalyst, and the carbon particles include at least two kinds of carbon particles adsorbing a hydrogen ion conductive polymer electrolyte in mutually different dispersed states.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,723,173 Method for manufacturing solid polymer electrolyte fuel cell | 22 | 1996 | |
| 6,060,187 Solid polymer type fuel cell and method for manufacturing the same | 7 | 1998 | |
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| 5,211,984 Membrane catalyst layer for fuel cells | 128 | 1991 | |
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| 5,728,485 Electrode for polymer electrolyte electrochemical cell and process of preparing same | 24 | 1997 | |
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| 6,015,635 Electrode for fuel cell and method of manufacturing electrode for fuel cell | 14 | 1998 | |
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| 5,766,788 Electrode composition material for polymer electrolyte fuel cell and process of preparing same | 29 | 1996 | |
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