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Composite pore-forming agent and method of preparing anode supporting body using the same

A technology of anode support and pore-forming agent, which is applied in the direction of battery electrodes, electrical components, circuits, etc., can solve problems such as shrinkage mismatch, and achieve the effect of simple method, superior output performance, and easy control

Inactive Publication Date: 2007-02-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shrinkage mismatch problem of the anode-supported electrolyte film prepared by the ceramic method during co-sintering, a composite pore-forming agent and a method for preparing an anode support using it are provided

Method used

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  • Composite pore-forming agent and method of preparing anode supporting body using the same
  • Composite pore-forming agent and method of preparing anode supporting body using the same
  • Composite pore-forming agent and method of preparing anode supporting body using the same

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specific Embodiment approach 1

[0012] Embodiment 1: The composite pore-forming agent of this embodiment is formed by mixing an organic pore-forming agent and a carbon element pore-forming agent according to a mass ratio of 0.5-50:0-30.

[0013] The organic pore-forming agent in this embodiment refers to powders made from food crops, such as flour, cornstarch, potato flour, sweet potato flour or corn flour, and the like. The simple substance of carbon element refers to the simple substance formed by carbon elements such as carbon powder, activated carbon powder or graphite powder.

specific Embodiment approach 2

[0014] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass ratio of the organic pore-forming agent to the carbon element pore-forming agent is 0.5-50:0.5-30.

specific Embodiment approach 3

[0015] Specific embodiment three: In this embodiment, the anode support is prepared according to the following steps:

[0016] Step 1. Mixing of anode primary powders: uniformly mix NiO and oxide electrolyte powders, wherein NiO accounts for 20-90% of the total mass of anode primary powders.

[0017] Step 2. Mixing of the composite pore-forming agent: the organic pore-forming agent and the carbon element pore-forming agent are evenly mixed according to the mass ratio of (0.5-50):(0-30).

[0018] Step 3. Mixing of the final powder of the anode: uniformly mix the initial powder of the anode and the composite pore-forming agent according to the mass ratio of 100: (0.5-50).

[0019] Step 4. Preparation of the anode support body: the final anode powder is pressed into an anode green body with a thickness of 0.05-3 mm, and sintered at 700-1500° C. for 1-10 hours. So far, the preparation process of the anode support with the composite pore-forming agent is completed.

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Abstract

the invention discloses a compound pore-creating agent and preparing method of anode support through pore-creating agent, which comprises the following steps: first, blending primary anode powder; second, blending compound pore-creating agent; third, blending final anode powder; forth, preparing cathode support. the method is easy to control sintering contracting quantity and pore size, which improves film battery property effectively.

Description

technical field [0001] The invention relates to a pore-forming agent added in the preparation process of anode powder and a method for preparing an anode support body by using the pore-forming agent. Background technique [0002] Solid oxide fuel cell (SOFC) is an electrochemical power generation device that directly converts the chemical energy of fuel into electrical energy. It has the advantages of high energy conversion rate and environmental protection. In order to reduce the working temperature of the battery from the traditional high temperature range (800-1000°C) to the medium-low temperature range (500-800°C), the current research focus is the preparation of anode-supported electrolyte thin film batteries. However, during co-sintering, the anode and electrolyte often have stress due to shrinkage mismatch, which leads to deformation of the battery; excessive stress can easily lead to cracks and pores in the electrolyte film during sintering; stress can also easily ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08K3/04H01M4/86H01M4/88
CPCY02E60/50
Inventor 陈孔发吕喆胡金艳艾娜王嘉明黄喜强苏文辉
Owner HARBIN INST OF TECH