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Tubular solid oxide fuel cell sealing material, tubular solid oxide fuel cell stack, and preparation methods of tubular solid oxide fuel cell sealing material and tubular solid oxide fuel cell stack

A technology of solid oxide and fuel cell stacks, which is applied in the direction of solid electrolyte fuel cells, fuel cells, fuel cell groups, etc., can solve the problems of lagging battery products, no long-term operation of kilowatt or megawatt fuel cell stacks, etc., and achieve production Low cost, easy industrial production and application, and simple structure

Active Publication Date: 2014-08-13
浙理氢能(杭州)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, single cells mainly include two types: tubular and sheet, and their performance can generally reach hundreds to thousands of mW / cm at operating temperatures. 2 power, but the process of industrialization and marketization of battery products lags far behind people's expectations. The fundamental reason lies in the development of related materials for building battery stacks and power generation systems, especially the development of sealing materials. So far, There are no data reports on the long-term operation of kilowatt or megawatt fuel cell stacks in my country

Method used

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  • Tubular solid oxide fuel cell sealing material, tubular solid oxide fuel cell stack, and preparation methods of tubular solid oxide fuel cell sealing material and tubular solid oxide fuel cell stack
  • Tubular solid oxide fuel cell sealing material, tubular solid oxide fuel cell stack, and preparation methods of tubular solid oxide fuel cell sealing material and tubular solid oxide fuel cell stack
  • Tubular solid oxide fuel cell sealing material, tubular solid oxide fuel cell stack, and preparation methods of tubular solid oxide fuel cell sealing material and tubular solid oxide fuel cell stack

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Embodiment 1

[0031] Such as image 3 As shown, the present embodiment tubular solid oxide fuel cell sealing material 3 includes a conductive layer 31, a sealing layer 32 and a bonding layer 33 from the inside to the outside, the conductive layer 31 is an Ag metal tube, and the surface is coated with Sr 0.7 La 0.3 Ti 0.5 Fe 0.5 o 3 The base sealing layer 32 is coated with La on the surface of the sealing layer 32 0.7 Sr 0.3 CrO 3 Base adhesive layer 33.

[0032] The method for preparing the sealing material 3 of the tubular solid oxide fuel cell in this embodiment includes the following steps:

[0033] Step 1: Using PVA as a dispersant, the ball ink grinding method is used to prepare Sr with a solid content of 15wt%. 0.7 La 0.3 Ti 0.5 Fe 0.5 o 3 Base slurry;

[0034] Step 2: Using PVA as a dispersant, the ball ink grinding method makes La with a solid content of 15wt%. 0.7 Sr 0.3 CrO 3 slurry;

[0035] Step 3: The conductive layer 31 is supported by an Ag metal tube, and th...

Embodiment 2

[0044] In this embodiment, the conductive layer 31 of the sealing material 3 of the tube-type solid oxide fuel cell is supported by an Ag metal tube, and the surface is coated with Sr. 0.7 La 0.3 Ti 0.5 Ni 0.5 o 3 Base sealing layer 32, other contents are the same as Example 1.

Embodiment 3

[0046] Such as image 3 As shown, the present embodiment tubular solid oxide fuel cell sealing material 3 includes a conductive layer 31, a sealing layer 32 and an adhesive layer 33 from the inside to the outside. The conductive layer 31 is a Cu metal tube, and the surface is coated with Sr 0.7 Y 0.3 Ti 0.5 Fe 0.5 o 3 The base sealing layer 32 is coated with a LaCrO3-based bonding layer 33 on the surface of the sealing layer 32 .

[0047] The method for preparing the sealing material 3 of the tubular solid oxide fuel cell in this embodiment includes the following steps:

[0048] Step 1: Using PVA as a dispersant, the ball ink grinding method is used to prepare Sr with a solid content of 15wt%. 0.7 Y 0.3 Ti 0.5 Fe 0.5 o 3 Base slurry;

[0049] Step 2: Using PVA as a dispersant, the ball ink grinding method is used to prepare LaCrO with a solid content of 15wt%. 3 slurry;

[0050] Step 3: The conductive layer 31 is supported by a Cu metal tube, and the surface is uni...

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Abstract

The present invention provides a tubular solid oxide fuel cell sealing material, a tubular solid oxide fuel cell stack, and preparation methods of the tubular solid oxide fuel cell sealing material and the tubular solid oxide fuel cell stack. The sealing material comprises an electric conduction layer, a sealing layer and a bonding layer, wherein the electric conduction layer is a metal pipe or a composite anode support pipe, a SrxA1-xTiyB1-yO3 base sealing layer is coated on the outer side of the electric conduction layer, A is selected from La and Y, B is one selected from Fe, Co, Ni, Cu and Zn, x is 0.5-1, y is 0.5-1, the bonding layer is coated on the outer side of the sealing layer, and the bonding layer is a LaCrO3 base connection material. According to the present invention, the tubular solid oxide fuel cell sealing material is adopted to connect with the adjacent single cells to form the cell stack; the sealing material has the three-layer structure comprising the electric conduction layer, the sealing layer and the bonding layer, integrates the connection material and the sealing material, and concurrently has functions of gas ventilation and electric conduction; and the research on the tubular bidirectional function composite sealing material system concurrently having functions of gas ventilation and electric conduction is achieved.

Description

technical field [0001] The invention relates to the field of solid oxide fuel cells, in particular to a sealing material for a tubular solid oxide fuel cell, a cell stack and a preparation method thereof. Background technique [0002] As an efficient and environment-friendly device for directly converting chemical energy into electrical energy, fuel cells have a promising future. Among them, solid oxide fuel cell (SOFC) is a research hotspot in this field. Since the beginning of this century, SOFC has entered a new stage of ceramic membrane fuel cell (CMFC). At present, single cells mainly include two types: tubular and sheet, and their performance can generally reach hundreds to thousands of mW / cm at operating temperatures. 2 power, but the process of industrialization and marketization of battery products lags far behind people's expectations. The fundamental reason lies in the development of related materials for building battery stacks and power generation systems, espe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/24H01M8/10H01M8/0271H01M8/028H01M8/2465
CPCY02E60/521H01M8/028H01M8/1253H01M8/2485Y02E60/50
Inventor 陈永红顾庆文卢肖永丁岩芝田冬林彬
Owner 浙理氢能(杭州)科技有限公司
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