Fuel cell and electrolyte layer for fuel cell

An electrolyte layer and fuel cell technology, which is applied to fuel cell components, fuel cells, solid electrolyte fuel cells, etc., can solve problems such as interference with continuous power generation

Inactive Publication Date: 2009-01-07
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, water in the electrolyte membrane freezes immediately after power generation starts, which interferes with continuous power generation and prevents the fuel cell from heating up

Method used

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  • Fuel cell and electrolyte layer for fuel cell
  • Fuel cell and electrolyte layer for fuel cell
  • Fuel cell and electrolyte layer for fuel cell

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no. 2 approach

[0029]In the fuel cell of the first embodiment, the antifreeze protein is uniformly dispersed in the electrolyte layer 20 . In a variant, the antifreeze protein may only be present in certain subregions of the electrolyte layer. An example of this modified structure is described below as the second embodiment.

[0030] image 3 is a sectional view schematically showing the structure of the fuel cell of the second embodiment. The fuel cell of the second embodiment has a structure similar to that of the fuel cell of the first embodiment except that the electrolyte layer 20 is replaced by the electrolyte layer 120 . Similar elements are denoted by the same reference numerals and are not explained in detail here. image 3 The enlarged cross-sectional view of FIG. 1 shows only the region adjacent to the electrolyte layer 120.

[0031] In the fuel cell of the second embodiment, the electrolyte layer 120 includes the antifreeze protein-containing layer 30 having the antifreeze pr...

no. 3 approach

[0036] In the structure of the second embodiment, the antifreeze protein-containing layer 30 is located in the middle of the electrolyte layer 120 . In a variant, a layer containing antifreeze proteins can be provided on at least one surface of the electrolyte layer. An example of this modified structure is described below as a third embodiment. Figure 4 is a sectional view schematically showing the structure of the fuel cell in the third embodiment. The fuel cell of the third embodiment has a structure similar to that of the fuel cell of the second embodiment except that the electrolyte layer 120 is replaced with the electrolyte layer 220 having a different arrangement of the layer 30 containing the antifreeze protein and the layer 32 not containing the antifreeze protein Structure. Similar elements are denoted by the same reference numerals and are not explained in detail here. and image 3 similar, Figure 4 The enlarged cross-sectional view of FIG. 1 shows only the a...

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Abstract

Disclosed is a fuel cell comprising an ion-conductive electrolyte layer (20) which is held between electrodes. The ion-conductive electrolyte layer (20) contains a polymer electrolyte and an antifreeze protein for suppressing growth of ice crystals from a liquid water.

Description

technical field [0001] The present invention relates to a polymer electrolyte fuel cell and an electrolyte layer included in the polymer electrolyte fuel cell. Background technique [0002] A solid polymer electrolyte membrane included in a polymer electrolyte fuel cell as an electrolyte layer has high proton conductivity in a wet state. In a fuel cell that includes a solid polymer electrolyte membrane, liquid water is produced at one electrode (more specifically, the cathode) as electrochemical reactions proceed. Liquid water generated in such a polymer electrolyte fuel cell or water vapor contained in a reaction gas supplied to such a polymer electrolyte fuel cell may cause various problems. For example, condensation of water near the electrodes formed on the electrolyte membrane may interfere with smooth gas supply to the electrodes, undesirably degrading battery performance. One proposed structure to prevent condensed water from interfering with smooth gas flow provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/10
CPCH01M2300/0094Y02E60/521H01M2300/0082H01M8/04253H01M8/1039H01M2300/0091H01M8/1051H01M8/1081H01M8/1023Y02E60/50Y02P70/50
Inventor 吉年信雄
Owner TOYOTA JIDOSHA KK
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