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Gradient micro-porous configuration anode supporter slurry and preparation method thereof

A technology of anode support and anode slurry, which is applied in the field of green energy/electrochemistry, can solve the problems of low output power density of the battery system, and achieve the goal of ensuring effective and fast transportation, reducing concentration polarization, and increasing output power density Effect

Active Publication Date: 2019-03-26
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In view of the deficiencies and defects of the above-mentioned prior art, the purpose of the present invention is to provide a slurry and a preparation met

Method used

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  • Gradient micro-porous configuration anode supporter slurry and preparation method thereof
  • Gradient micro-porous configuration anode supporter slurry and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment provides a fuel cell system with high output power density, which includes from the inside to the outside: an air inlet 1, an anode support 2, an electrolyte layer 3 and a cathode 4, and also includes an anode reinforcement layer 5, the anode The reinforcing layer 5 is located between the anode support 2 and the electrolyte layer 3;

[0043] The anode support 2 has a three-layer structure, which sequentially includes an anode porous and uniform inner layer 6, an anode finger-shaped porous layer 7 and an anode porous and uniform outer layer 8 from the inside to the outside;

[0044] The air inlet 1, the anode support 2, the anode reinforcement layer 5, the electrolyte layer 3 and the cathode 4 are arranged coaxially in contact with each other in sequence.

[0045] The preparation method of the high output power density fuel cell system of this embodiment, wherein, the anode support is made of anode slurry, the anode reinforcement layer is made of anode re...

Embodiment 2

[0077] Embodiment 2: the thickness of the anode support increases

[0078] This embodiment provides a fuel cell system with high output power density, the structure of which is basically the same as that of Embodiment 1.

[0079] The preparation method of the high output power density fuel cell system of this embodiment is basically the same as that of Embodiment 1, the only difference lies in the first step.

[0080] Step 1: Preparation of the anode support:

[0081] Place the anode slurry in a vacuum degasser, and under the action of the vacuum pump, the air in the anode slurry is removed from the container through the exhaust pipe of the vacuum pump, and the vacuum degree of the container reaches 5×10 -2 bar~1×10 -1 bar, keep for 30-60 minutes to fully remove the air in the anode slurry;

[0082] Place the anode slurry after vacuum degassing in a cleaned and dried stainless steel container, immerse the anode mold with one end closed in the anode slurry after vacuum degas...

Embodiment 3

[0096] Embodiment 3: the thickness of the anode support is reduced

[0097] This embodiment provides a fuel cell system with high output power density, the structure of which is basically the same as that of Embodiment 1.

[0098] The preparation method of the high output power density fuel cell system of this embodiment is basically the same as that of Embodiment 1, the only difference lies in the first step.

[0099] Step 1: Preparation of the anode support:

[0100] Place the anode slurry in a vacuum degasser, and under the action of the vacuum pump, the air in the anode slurry is removed from the container through the exhaust pipe of the vacuum pump, and the vacuum degree of the container reaches 5×10 -2 bar~1×10 -1 bar, keep for 30-60 minutes to fully remove the air in the anode slurry;

[0101] Place the anode slurry after vacuum degassing in a cleaned and dried stainless steel container, immerse the anode mold with one end closed in the anode slurry after vacuum dega...

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Abstract

The invention provides gradient micro-porous configuration anode supporter slurry and a preparation method thereof. The gradient micro-porous configuration anode supporter slurry is prepared from thefollowing raw materials in parts by weight: 100 parts of an anode powder material, 100-160 parts of a solvent N-methyl-2-pyrrolidone, 1-3 parts of an adhesive polyether sulfone, 20-40 parts of a dispersing agent polyvinylpyrrolidone and 2-10 parts of a pore forming substance starch or graphite. The gradient micro-porous configuration anode supporter prepared from the slurry is of a three-layer structure, and sequentially comprises an anode porous uniform inner layer, an anode fingerlike porous layer and an anode porous uniform outer layer from the interior to exterior. According to the anode slurry disclosed by the invention, the anode supporter of the three-layer structure can be obtained by an impregnation method, and the porosity of the anode supporter of the three-layer structure can be quantitatively controlled. According to the anode supporter of the three-layer structure, effective and rapid fuel transport can be ensured, and concentration polarization of the gas transmission resistance is reduced.

Description

technical field [0001] The invention belongs to the field of green energy / electrochemistry, and relates to a micropipe solid oxide fuel cell system, in particular to a slurry and a preparation method of a gradient microporous configuration anode support. Background technique [0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, referred to as SOFC) has the advantages of high energy conversion efficiency, all-solid structure, no pollution, and wide adaptability to a variety of fuel gases. An efficient and environmentally friendly energy conversion system that converts into electrical energy. [0003] A solid oxide fuel cell usually consists of an anode, an electrolyte, and a cathode. The electrodes (including the anode and cathode) play the role of gas catalytic decomposition and current transmission, and the thin and dense electrolyte layer plays the role of conducting oxygen ions and protons, and isolating fuel and oxidation. The role of gas. Solid oxide fuel cells can b...

Claims

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Application Information

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IPC IPC(8): H01M8/0271H01M4/86H01M4/88
CPCH01M4/8605H01M4/8807H01M4/8817H01M8/0271Y02E60/50
Inventor 陈长城李隆
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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