Excessive hydrogen depletion unit, fuel cell unit and fuel cell system
A fuel cell unit and fuel cell system technology, which can be used in fuel cells, fuel cell additives, fuel cell components, etc., and can solve problems such as fuel cell safety concerns
Inactive Publication Date: 2011-07-20
YOUNG GREEN ENERGY
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Problems solved by technology
Therefore, when the membrane electrode group cannot completely consume excess hydrogen, excess unreacted hydrogen will accumulate in the fuel cell. Once the concentration of hydrogen is too high, it may cause safety concerns in the use of fuel cells
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[0015] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed descriptions of multiple embodiments with reference to the drawings. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the attached drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.
[0016] figure 1 It is a block diagram of a fuel cell unit and an excess hydrogen consumption unit according to an embodiment of the present invention. figure 2 yes figure 1 Structural cross-section of the excess hydrogen consumption unit. Please also refer to figure 1 and figure 2 , in this embodiment, the fuel cell unit 100 includes a membrane electrode group 110 and a hydrogen flow channel 120, wherein the hydrogen flow channel 120 is used to guide hydrogen to the membrane ...
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The invention discloses a fuel cell system, which comprises a hydrogen supply unit and a fuel cell unit. The fuel cell unit comprises a proton exchange membrane, first and second catalyst layers, first and second gas diffusion layers, a hydrogen runner and an excessive hydrogen runner. The first catalyst layer and the second catalyst layer are arranged on two sides of the proton exchange membrane respectively. The first gas diffusion layer is arranged on the first catalyst layer. The second gas diffusion layer is arranged on the second catalyst layer. The hydrogen runner is arranged on the first gas diffusion layer and used for guiding the hydrogen supplied by the hydrogen supply unit to the first gas diffusion layer. The excessive hydrogen runner is arranged on the second gas diffusion layer and communicated to the hydrogen runner, and chemical combustion reaction is performed when the hydrogen in the excessive hydrogen runner and the oxygen outside the excessive hydrogen runner are mixed and then contacted with the second catalyst layer.
Description
【Technical field】 [0001] The present invention relates to a fuel cell, and in particular to a fuel cell capable of consuming excess hydrogen. 【Background technique】 [0002] A fuel cell is basically a power generating device that converts chemical energy into electrical energy using the reverse reaction of electrolysis of water. Taking a proton exchange membrane fuel cell (PEMFC) as an example, it mainly includes a membrane electrode assembly (MEA) and a hydrogen flow channel for supplying hydrogen to the membrane electrode assembly. [0003] The membrane electrode group includes a proton exchange membrane (proton exchange membrane), an anode catalyst layer (anode catalyst layer), a cathode catalyst layer (cathode catalyst layer), an anode gas diffusion layer (gas diffusion layer, GDL) and a cathode gas diffusion layer. The anode catalyst layer and the cathode catalyst layer are respectively arranged on both sides of the proton exchange membrane, and the anode gas diffusio...
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IPC IPC(8): H01M8/04H01M8/22H01M8/02
CPCH01M2008/1095H01M8/0662H01M8/04022Y02E60/50
Inventor 王正周柏圭吴岳璋
Owner YOUNG GREEN ENERGY