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Solid oxide fuel cell

A solid oxide and fuel cell technology, used in solid electrolyte fuel cells, fuel cells, fuel cell components, etc., can solve problems such as inability to extract electricity and power generation, eliminate grain boundary fractures, and improve interparticle strength. , the effect of suppressing powdering

Inactive Publication Date: 2014-03-12
TOTO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If pulverization and peeling occur, it becomes impossible to extract power, resulting in failure to generate electricity

Method used

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  • Solid oxide fuel cell
  • Solid oxide fuel cell
  • Solid oxide fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] due to production figure 2 type of single cell and experimented, so it will be described. Weigh as follows, so that ZrO 2 Raw material (average particle size 0.3μm), 5c 2 o 3 Raw material (average particle size 0.3μm), CeO 2 Raw material (average particle diameter 0.3 μ m) becomes by general formula 87mol% (ZrO 2 )-10mol% (Sc 2 o 3 )-3mol% (CeO 2 ) represents the composition of 10Sc3CeSZ, wet mixed in solvent ethanol for 50 hrs, dried and pulverized, and then sintered at 1200°C. After pulverizing the sintered body into a powder, Al is added in an amount corresponding to 2 mol% relative to the total mass (total molar amount) of zirconia, scandium oxide, lanthanide oxide, and / or yttrium oxide in the solid electrolyte material. 2 o 3 (average particle size 0.5 μm), and with respect to the aforementioned powder, 2% by weight of MnO was added in terms of Mn content 2 (average particle diameter 0.5 μm) and 5 wt % of binder PVA were added and mixed in a mortar. The...

Embodiment 2

[0039] In the general formula 87mol% (ZrO 2 )-10mol% (Sc 2 o 3 )-3mol% (CeO 2 ) in the composition of 10Sc3CeSZ, with respect to the total mass of zirconia, scandium oxide, lanthanide oxide and / or yttrium oxide in the solid electrolyte material (total molar mass), mixed with Al equivalent to 2mol% 2 o 3 , adding 2% by weight of Fe based on Fe content 2 o 3 (average particle diameter 0.5 μm) and the binder PVA that adds 5wt% has obtained the solid electrolyte layer of the compact texture of 10Sc3CeSZ2Al composition, and makes the oxygen electrode layer be LSF (average particle diameter 2 μm), in addition and embodiment 1 same.

Embodiment 3

[0041] In the general formula 87mol% (ZrO 2 )-10mol% (Sc 2 o 3 )-3mol% (CeO 2 ) in the composition of 10Sc3CeSZ, with respect to the total mass of zirconia, scandium oxide, lanthanide oxide and / or yttrium oxide in the solid electrolyte material (total molar mass), mixed with Al equivalent to 2mol% 2 o 3 , adding 1% by weight of MnO based on the content of Mn 2 (average particle size 0.5μm), adding 1% by weight of Fe based on Fe content 2 o 3 (average particle diameter 0.5 μm) and the binder PVA that adds 5wt% has obtained the solid electrolyte layer of the compact texture of 10Sc3CeSZ2Al composition, and makes the oxygen electrode layer be LSF (average particle diameter 2 μm), in addition and embodiment 1 same.

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Abstract

Provided is a solid oxide fuel cell having a service life of approximately 90,000 hours, a level required to encourage the widespread use of SOFC. The solid oxide fuel cell according to the present invention comprises a solid electrolyte layer, an oxygen electrode layer provide to one side of the solid electrolyte layer, and a fuel electrode layer provide to the other side of the solid electrolyte layer. The oxygen electrode layer is made from a material including iron or manganese, the solid electrolyte layer is made from a scandia-stabilized zirconia electrolyte material containing alumina, and the solid electrolyte layer has a lanthanoid oxide and / or yttria dissolved therein.

Description

technical field [0001] The invention relates to a solid oxide fuel cell. Background technique [0002] Conventionally, a solid electrolyte material such as zirconia in which scandium oxide is solid-dissolved (hereinafter referred to as ScSZ) has been used for applications such as solid oxide fuel cells (hereinafter abbreviated as SOFC). Compared with other fuel cells such as phosphoric acid type and molten carbonate type, SOFC has higher power generation efficiency and higher exhaust heat temperature, so it is attracting attention as a next-generation energy-saving power generation system. [0003] The basic composition of SOFC has a solid electrolyte layer, a fuel electrode layer and an oxygen electrode layer, hydrogen (H 2 ) and the like are in fluid contact with the fuel electrode layer on the side facing the solid electrolyte layer, and air or oxygen (O 2 ) and other oxidant gases are in flow contact with the oxygen electrode layer facing the opposite side of the solid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/12
CPCH01M8/1213H01M2300/0094H01M4/8621H01M4/86H01M2300/0091H01M2300/0077Y02E60/525H01M2008/1293C04B35/486H01M8/1016Y02E60/521H01M4/9066H01M8/12H01M8/1253H01M8/02C04B35/4885C04B35/6261C04B2235/3217C04B2235/3224C04B2235/3229C04B2235/3267C04B2235/3272C04B2235/5445C04B2235/762C04B2235/765C04B2235/3225C04B2235/3227Y02E60/50Y02P70/50
Inventor 岛津惠美上野晃阿部俊哉宫尾元泰樋渡研一
Owner TOTO LTD
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