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Proton exchange membrane fuel cell - Wikipedia, the free encyclopedia (809 words) |
 | Proton exchange membrane fuel cells, also known as polymer electrolyte membrane fuel cells (PEMFC), are a type of fuel cell being developed for transport applications as well as for stationary and portable applications. |
| A proton exchange membrane fuel cell transforms the chemical energy liberated during the electrochemical reaction of hydrogen and oxygen to electrical energy, as opposed to the direct combustion of hydrogen and oxygen gases to produce thermal energy. |
| The PEM fuel cell was invented in the early 1960s by Willard Thomas Grubb and Leonard Niedrach of General Electric [1]. |
| United States Patent Application: 0020142205 (3964 words) |
| The proton exchange membrane fuel cell stack of claim 1, wherein the fuel flow field comprises an orthogonal flow field in contact with the catalyzed membrane and a parallel flow field in contact with the orthogonal flow field, and the parallel flow field has a greater porosity than the orthogonal flow field. |
| The proton exchange membrane fuel cell stack of claim, wherein the edges of each cell unit are sealed by an external sealing layer to form a single assembly of the cell unit. |
| An fuel flow barrier sealing layer 18b is formed beside the fuel supply passage 17a and the fuel exhaust passage 17b, at portions adjacent to the air flow field portion 15 to prevent the fuel from entering the air flow field portion 15. |
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