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metal support unit

A metal support and monomer technology, which is applied in solid electrolyte fuel cells, structural parts, final product manufacturing, etc., can solve the problems of solid electrolyte layer and metal support interface peeling, metal support degradation, etc., and achieve excellent adhesion , Interfacial detachment inhibition, battery performance stabilization effect

Active Publication Date: 2020-12-11
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in metal-supported monomers, when the solid electrolyte layer and the metal support are fired together at high temperature, the deterioration of the metal support and the interface peeling between the solid electrolyte layer and the metal support may become problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] will have a diameter of The thickness of the support body is 250 μm, and in the center The locale has 140 cells / cm 2The ferritic stainless steel with through-holes was heat-treated at 600° C. for 1 hour to prepare a metal support having a chromium oxide layer with a film thickness of 1 μm on the surface.

[0136] Next, 5 parts by mass of ethyl cellulose, 5 parts by mass of ethyl cellulose, 40 parts by mass of α-terpineol were mixed to obtain a fuel electrode paste. The obtained fuel electrode paste was applied to the metal support by screen printing so as to cover the region having the through-holes of the metal support, dried at 120° C. for 1 hour, and then degreased at 450° C. for 2 hours. Then, the fuel electrode layer was formed on the metal support by firing at 800° C. for 2 hours under a nitrogen atmosphere. The obtained fuel electrode layer had a thickness of 18 μm and a ratio of NiO / (Ni+NiO) of 45 mol%.

[0137] Further, the solid electrolyte paste (1) pr...

Embodiment 2

[0139] After forming the fuel electrode layer on the metal support in the same manner as in Example 1, in Example 1, the solid electrolyte paste (1) was changed to the solid electrolyte paste (2) prepared in Preparation Example 2, except that Other than that, in the same manner as in Example 1, a solid electrolyte layer having a thickness of 18 μm was formed, thereby forming a semi-cell in which a fuel electrode layer and a solid electrolyte layer were sequentially stacked on a metal support. In the obtained semi-monomer, peeling from the fuel electrode layer and the metal support was not observed on the entire surface of the solid electrolyte layer, and the peeling evaluation was "3". The grain size of the solid electrolyte layer was 1.3 μm, the porosity was 2.5%, and the NiO / (Ni+NiO) ratio of the fuel electrode layer obtained after firing the solid electrolyte layer was 47 mol%. The width of the portion in direct contact with the metal support of the lower layer at the perip...

Embodiment 3

[0141] in diameter of The thickness of the support body is 250 μm, and in the center The locale has 140 cells / cm 2 On the surface of the through-hole ferritic stainless steel, a Ni-Co film was formed by plating treatment, and then heat-treated at 800°C for 1 hour, thereby preparing a Ni-Co-based tip with a film thickness of 5 μm on the surface. Metal support for the spar layer.

[0142] Next, 5 parts by mass of ethyl cellulose, α-terpene 40 parts by mass of pinol was mixed and homogenized to obtain a fuel electrode paste. The obtained fuel electrode paste was applied to the metal support by screen printing so as to cover the region having the through-holes of the metal support, dried at 120° C. for 1 hour, and then degreased at 450° C. for 2 hours. Then, firing was performed at 900° C. for 2 hours under a nitrogen atmosphere, whereby a fuel electrode layer was formed on the metal support. The obtained fuel electrode layer had a thickness of 20 μm and a ratio of NiO / (Ni+...

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Abstract

The metal support type cell of the present invention includes a laminated body formed by sequentially disposing a fuel electrode layer and a solid electrolyte layer on the surface of a metal support body having pores continuous from the surface to the back surface, and the solid electrolyte layer connects the fuel electrode The surface of the layer that is not in contact with the metal support is completely covered, the peripheral portion of the solid electrolyte layer is in contact with the surface of the metal support, the metal support has a metal oxide layer with a thickness of 1 to 5 μm on the surface of the metal support, and the fuel electrode layer Contains NiO and Ni at a ratio of NiO / (Ni+NiO) of 45% or more by molar ratio as conductive components, contains gadolinium-doped ceria as an ion-conductive component, and the solid electrolyte layer mainly contains scandia-stabilized Zirconia contains Bi atoms in a ratio of 0.1 to 10.0 mol with respect to 100 mol of Zr atoms, and has a cross-sectional porosity of 5.0% or less.

Description

technical field [0001] This invention relates to metal supported monomers. Background technique [0002] In recent years, the development of metal-supported cells that are superior in mechanical strength, snap-start performance, redox resistance, and the like compared to conventional electrolyte-supported cells and electrode-supported cells has been actively developed (for example, refer to Patent Document 1). As a solid electrolyte contained in a metal-supported monomer, zirconia stabilized by rare earths or the like is used. Conventionally, a solid electrolyte composed of zirconia stabilized by rare earths or the like needs to be sintered at a high temperature. Therefore, in metal-supported monomers, deterioration of the metal support and interfacial peeling between the solid electrolyte layer and the metal support may become problems when the solid electrolyte layer is fired together with the metal support at high temperature. [0003] Bi 2 o 3 . It is described in P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0271H01M4/86H01M8/1213H01M8/1226
CPCH01M8/126H01M4/9025H01M8/0232H01M2008/1293H01M8/1226Y02E60/50Y02P70/50H01M4/8657H01M8/0271H01M8/12H01M8/1213H01M8/1253H01M4/8885
Inventor 小泉淳芥川宽信西川洋平
Owner HONDA MOTOR CO LTD
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