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Current collection component of anode supporting tube type solid oxide fuel cell and application thereof

A solid oxide, fuel cell technology, used in fuel cell parts, solid electrolyte fuel cells, fuel cells, etc., can solve the problems of battery performance decline, large volume, and no solution to alloys, and achieve the effect of easy assembly

Active Publication Date: 2012-10-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention does not solve the problem of low battery performance due to slow oxidation of alloys at high temperatures; in addition, the comb-shaped structure of the current collectors arranged between fuel cell units is only suitable for flat tube SOFC
Korea ENERGY Technology Research Institute also discloses a connection method of an anode-supported flat-tube SOFC (CN 1591947A). The connector used is directly processed from bulk metal, and its disadvantages are large volume and heavy weight
In addition, since parallel grooves need to be processed on the connector as gas channels, the processing cost of the connector is greatly increased
[0013] For the anode-supported cylindrical SOFC, there is no disclosed technology that can meet the above six requirements at the same time

Method used

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  • Current collection component of anode supporting tube type solid oxide fuel cell and application thereof
  • Current collection component of anode supporting tube type solid oxide fuel cell and application thereof
  • Current collection component of anode supporting tube type solid oxide fuel cell and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the tube-type SOFC collector component includes an alloy substrate 1 and a protective coating 3 coated on the surface of the collector. There is also a pre-oxidized layer 2 between the substrate and the protective coating.

[0034] Fig. 2 is a perspective view showing an anode support tube type SOFC current collecting part of the present invention and a mode of its application, and Fig. 3 is a cross-sectional view of Fig. 2(a) and its enlarged view, and the battery pack includes 3 * 3 circular tubes Type battery cell array, the battery cells are parallel to each other along the tube axis, and the battery cells are arranged in a rectangular shape when viewed from a section perpendicular to the tube axis.

[0035] The current collecting part 4, as shown in FIG. 2(b), contains curved and undulating shape features on the cross-section of the plate-shaped alloy base material perpendicular to the axial direction of the tubular battery unit 5, and t...

Embodiment 2

[0039] Such as Figure 4 As shown, the difference from Embodiment 1 is that the side wall 12 is changed to an inclined type (12'), and a bend 15 is added in the middle of the arc connecting portion 13, and the shape of the bend can be V-shaped, S-shaped, Arcs or repetitions and combinations of the above shapes. The above changes can increase the elastic deformation capacity of the current collecting component 4, so that the current collecting component 4 can better absorb the strain caused by thermal expansion and reduce the influence of thermal stress.

Embodiment 3

[0041] The difference from Example 1 is that in this example, the plate-shaped alloy substrate 1 uses a Fe-Cr alloy with a brand name of SUS430, the thickness of the alloy substrate 1 is about 0.5 mm, and no pre-oxidation treatment is performed before coating.

[0042] In addition, the conductive composite oxide in the coating material is prepared by a solid-state reaction method with a composition of Cu 1.3 co 1.7 o 4 of powder. Will Cu 1.3 co 1.7 o 4 Powder, MnO 2 The powder is mixed in a molar ratio of 80:20, and n-butanol and PVB are added as an organic solvent and a binder, the weights of which are 200% and 10% of the total weight of the powder respectively, and a slurry with a solid phase content of 32% is formed after ball milling and dispersion , the slurry is evenly coated on the surface of the alloy substrate by dipping twice, and after drying, it is sintered at 800°C for 24h, and the thickness of the coating 3 is about 10 μm.

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Abstract

The invention discloses a current collection component of an anode supporting tube type solid oxide fuel cell and an application thereof. The current collection component comprises a plate-like alloy base material and a protective coating coated to the surface of the base material surface and capable of inhibiting high temperature oxidation of alloy. Materials used to form the protective coating on the surface of the alloy base material comprise at least two oxide components: 40%-90% of composite oxide and 10%-60% of single oxide in molar percentage, wherein the composite oxide comprises one or more than two of oxides with perovskite structure, spinel structure, fluorite structure or wurtzite structure, and at least one composite oxide has the conductivity greater than 1 S / cm at 500-900 DEG C. A hole or groove throughout the plate body is arranged on the plate-like alloy base material, and one or more than two bulges or grooves are arranged in the axial direction on the surface of the alloy base material parallel to a tube type cell unit, and the shape of the bulges or grooves is matched with an external electrode or a ceramic connector on the tube type cell unit. The current collection component provided by the invention can simultaneously play the actions of supporting and connecting the fuel cell unit and collecting and conducting current, and has the advantages of high temperature oxidation resistance, good conductivity, high strength and toughness, easiness in cell stack assembly, etc. The invention also discloses a method for making the current collection component.

Description

technical field [0001] The invention relates to a solid oxide fuel cell, in particular to a current collecting component of an anode support tube type solid oxide fuel cell and its application. Background technique [0002] Solid oxide fuel cell (SOFC) is a power generation device that directly converts chemical energy in fuel into electrical energy in a clean and efficient manner. It has the advantages of wide adaptability to various fuel gases and high value of waste heat utilization. SOFC can provide a module close to the end user to solve the problems of high energy consumption and noise in the process of power transmission. It can be applied in the fields of distributed power generation system, embedded power generation device and symbiotic power generation, especially for important government and military departments . [0003] Whether it is a plate-type SOFC or a tube-type SOFC, it involves the connection between fuel cell units and the problem of current collection....

Claims

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Application Information

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IPC IPC(8): H01M8/02H01M8/10H01M8/021H01M8/1006
CPCY02E60/521Y02E60/50Y02P70/50
Inventor 区定容程谟杰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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