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Solid electrolyte fuel cell

一种固体电解质、固体电解质层的技术，应用在固体电解质燃料电池、燃料电池、燃料电池的零部件等方向，能够解决没有提高、电功率输出提高、三相界面面积减小等问题，达到面积增大、热膨胀系数差异最小化的效果

Inactive Publication Date: 2007-05-30
SHINKO ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Compared to the solid electrolyte fuel cell 100 shown in FIG. 8, the solid electrolyte fuel cell thus prepared exhibits improved durability, but little or no improvement in electrical power output
The reason for this phenomenon may be that the cathode layer made of electrode material and electrolyte material with a mixing ratio of 50:50 has a dense structure, which reduces the movement resistance of oxygen ions to the dense solid electrolyte layer, but also Reduces the area of ​​the three-phase interface where gas (e.g. oxygen), electrode material, and electrolyte material are in contact with each other

Method used

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Examples

Experimental program
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Embodiment 1

[0062] (1) Preparation of solid electrolyte fuel cells

[0063] Use Sm with a thickness of 180μm and a diameter of φ15mm 0.2 Ce 0.8 o 1.9 A (samarium oxide-doped ceria: SDC) ceramic substrate is used as the solid electrolyte layer 10, wherein the ceramic substrate is obtained by forming a green sheet by a doctor blade method (a tape casting method), and the green sheet is formed from the Plates A circular plate was punched out, which was then fired at 1300°C.

[0064] 20% by weight of SDC, 5% by weight of Rh 2 o 3 (rhodium oxide) and 8 mol% Li-NiO 2 Mix to obtain the anode layer paste, and then print the paste as a sheet-like material constituting the anode layer 22 by sheet-printing (sheet-printed) (distribution area: 1.3 cm 2 ) to one surface (area: 1.8cm) of the ceramic substrate as the solid electrolyte layer 10 2 )superior.

[0065] In addition, from Sm containing 50% by weight SDC 0.5 Sr 0.5 CoO 3 (Samarium strontium cobaltate: SSC) to make a dense layer paste...

Embodiment 2

[0080] The solid electrolyte fuel cells prepared in Example 1 and Comparative Examples 1 and 2 were tested for power generation performance by applying the premixed flame of the burner to the surface of the anode layer 22 side, wherein the burner Butane gas with a concentration of 6.5% was used as fuel. The test results are shown in Figure 6.

[0081] In FIG. 6 , solid marks represent electric power [power (mW)] corresponding to current, and open marks represent electric potential [potential (V)] corresponding to current. In Fig. 6, No. 1 represents the test result of the solid electrolyte fuel cell of Example 1 (comprising a cathode layer 20 composed of a dense layer 12, a porous layer 14 and a mesh metal 16), and No. 2 represents the solid electrolyte of Comparative Example 1 The test result of the fuel cell (comprising only the cathode layer 20 composed of dense layer 12 and mesh metal 16), No. 3 represents the solid electrolyte fuel cell of comparative example 2 (comprisi...

Embodiment 3

[0085] By applying the premixed flame of the burner to the surface of the anode layer 22 side, the solid electrolyte fuel cells prepared in Example 1 and Comparative Example 2 were respectively tested for power generation performance, wherein the burner used a concentration of 6.5% butane gas as fuel. Then, the two solid electrolyte fuel cells are separated from the flame sufficiently so that they can be completely cooled to room temperature, and then the operation of applying the premixed flame of the burner to the surface on the anode layer 22 side is repeated 5 times so as to pass heat Impact tests test them for performance degradation. The test results are shown in Figure 7.

[0086] FIG. 7A is a graph of the power generation performance of the solid electrolyte fuel cell prepared in Example 1. FIG. Even after the solid electrolyte fuel cell of Example 1 was subjected to 5 thermal shocks, it was seen that its power generation performance deteriorated little.

[0087] On...

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Abstract

A solid electrolyte fuel cell including a cathode layer formed on one surface of a solid electrolyte layer and an anode layer formed on the other surface of the solid electrolyte layer, wherein the cathode layer is a multi-layer structure including at least two layers, the outermost layer constituting the multi-layer structure is a porous layer obtained by adding a pore- forming material which is gasified at the firing temperature for the formation of the cathode layer during the formation of the cathode layer by firing and has a mesh metal or wire metal for current collection embedded therein or fixed thereto and the innermost layer disposed in contact with the solid electrolyte layer is a dense layer obtained by firing free of pore-forming material during the formation of the cathode layer by firing.

Description

technical field [0001] The present invention relates to a solid electrolyte fuel cell, and more particularly, the present invention relates to a solid electrolyte fuel cell having a cathode layer formed on one surface of a solid electrolyte layer, and a cathode layer formed on the other surface of the solid electrolyte layer anodic layer formed on the surface. Background technique [0002] Patent Document 1 proposes a simple fuel cell that can be placed in or near a combustion flame to generate electricity. Such a fuel cell is shown in FIG. 8 . The fuel cell 100 shown in FIG. 8 is a solid electrolyte fuel cell (hereinafter referred to as "solid electrolyte fuel cell 100") having a cathode layer 104 having a dense structure formed on one surface of a solid electrolyte layer 102, and An anode layer 110 is formed on the other surface of the solid electrolyte layer 102 . Cathode layer 104 and anode layer 110 are each in the form of a porous layer in which mesh metals 106 and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/10
CPCH01M4/9016H01M4/9033H01M4/8621H01M2004/8689Y02E60/521H01M4/8885H01M4/8657Y02E60/525H01M8/1246H01M4/861H01M8/126Y02E60/50Y02P70/50
Inventor 片桐史雅菅沼茂明德武安卫吉池润
Owner SHINKO ELECTRIC IND CO LTD
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