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A solid oxide, fuel cell stack technology, applied in solid electrolyte fuel cells, fuel cells, circuits, etc., can solve the problems of long-term operation without kilowatt or megawatt fuel cell stacks, battery product lag, etc., and achieve easy industrial production. and application, low production cost, good repeatability
Active Publication Date: 2016-06-29
浙理氢能(杭州)科技有限公司
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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
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Embodiment 1
[0031] Such as image 3 As shown, the sealing material 3 of the tubular solid oxide fuel cell of this embodiment 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 an Ag metal tube coated on its surface 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 The base bonding layer 33.
[0032] The preparation method of the sealing material 3 of the tubular solid oxide fuel cell in this embodiment includes the following steps:
[0033] Step 1: Using PVA as dispersant, ball milling method 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 the dispersant and ball milling to prepare 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 Sr is evenly coated on its surface 0.7 La 0.3 Ti 0.5 ...
Embodiment 2
[0045] In this embodiment, except for the sealing material 3 of the tubular solid oxide fuel cell, the conductive layer 31 adopts an Ag metal tube as a support and is coated with Sr on its surface. 0.7 La 0.3 Ti 0.5 Ni 0.5 O 3 Base sealing layer 32, other contents are the same as in Example 1.
Embodiment 3
[0047] Such as image 3 As shown, the sealing material 3 of the tubular solid oxide fuel cell of this embodiment 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 coated on its surface 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 adhesive layer 33 on the surface of the sealing layer 32.
[0048] The preparation method of the sealing material 3 of the tubular solid oxide fuel cell in this embodiment includes the following steps:
[0049] Step 1: Using PVA as dispersant, ball milling method to prepare Sr with a solid content of 15wt% 0.7 Y 0.3 Ti 0.5 Fe 0.5 O 3 Base slurry
[0050] Step 2: Using PVA as the dispersant and ball milling to prepare LaCrO with a solid content of 15wt% 3 Slurry
[0051] Step 3: The conductive layer 31 is supported by a Cu metal tube, and Sr is uniformly coated on its surface 0.7 Y 0.3 Ti 0.5 Fe 0.5 O 3 Base slurry, si...
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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, and in particular to a sealing material of a tubular solid oxide fuel cell, a cell stack and a preparation method thereof. Background technique [0002] As a highly efficient and environmentally friendly device that directly converts chemical energy into electrical energy, fuel cells have good development prospects. 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, the single cell mainly includes two types: tube and sheet, and its performance can reach hundreds to thousands of mW / cm at working temperature. 2 However, the industrialization and marketization of battery products lags far behind people’s expectations. The fundamental reason lies in the construction of battery stacks and power generation systems, especially the restrictions on the development ...
Claims
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Application Information
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