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Method for preparing hollow fiber-type solid-oxide fuel battery

A solid oxide and fuel cell technology, which is applied to solid electrolyte fuel cells, fuel cell components, fuel cells, etc., can solve the problems of volume power density to be improved, battery power generation capacity decline, and limited reaction area, etc., to achieve reduction The effect of preparation cost, power density increase and simplified preparation process

Inactive Publication Date: 2008-08-27
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the large diameter of the traditional tubular SOFC, a thicker support is generally required to ensure sufficient mechanical strength of the SOFC. Generally, an anode or cathode support type SOFC is used, which increases the resistance on the anode or cathode, and the battery The power generation capacity of the
Moreover, the reaction area provided by the traditional tubular SOFC per unit volume is still limited, so the volumetric power density needs to be improved.

Method used

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  • Method for preparing hollow fiber-type solid-oxide fuel battery
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  • Method for preparing hollow fiber-type solid-oxide fuel battery

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Example 1: Ni+Y 0.18 Zr 0.82 o 1.91 (YSZ)|YSZ|La 0.6 Sr 0.4 MnO 3 Preparation and Performance Test of (LSM64) Hollow Fiber SOFC

[0048] First, 5g polyvinyl butyral, 40g ethanol, 10g acetone, 10g N,N-dimethylacetamide were pre-mixed, and then 40g NiO and 60g YSZ powder were weighed and added to a stainless steel ball mill tank, and the organic matter was formed after ball milling for 24 hours. - Metal oxide slurries. The above slurry was vacuum degassed and extruded through a film-making die to obtain a number of anode blanks. The blanks were dried at 80°C for 24 hours in a vacuum state and then placed in an electric furnace for heat treatment at 1000°C for 5 hours (the heating rate was 5°C / min) to obtain a dry green body (inner diameter 1.5mm, thickness 0.8mm, length 200mm).

[0049] Then, 10 g of YSZ electrolyte powder, 20 g of ethylene glycol, and 80 g of isopropanol were added into a ball mill jar, and ball milled at 500 rpm for 2 hours to prepare an electro...

Embodiment 2

[0052] Example 2: Ni+Sc 0.2 Zr 0.80 o 1.9 (ScSZ)|ScSZ|La 0.6 Sr 0.4 FeO 3 Preparation and Performance Test of (LSF64) Hollow Fiber SOFC

[0053] First, 5g of polyvinyl butyral, 40g of ethylene glycol, 10g of butanone, 20g of N,N-dimethylsulfoxide were pre-mixed, and then 40g of NiO and 60g of ScSZ powder were weighed and added to a stainless steel ball mill tank, and ball milled After 48 h, an organic-metal oxide slurry was formed. After vacuum degassing the above slurry, a number of anode blanks were obtained by film-making mold technology. The blanks were dried at 100°C for 24h in a vacuum state, and then placed in an electric furnace for heat treatment at 1000°C for 5h (the heating rate was 5°C / min) to obtain a dry green body (inner diameter 1mm, thickness 0.6mm, length 150mm).

[0054] Then, 10 g of ScSZ electrolyte powder, 10 g of ethylene glycol, 10 g of toluene, and 80 g of isopropanol were added into a ball mill jar, and ball milled at 500 rpm for 2 h to prepar...

Embodiment 3

[0057] Example 3: Ni+Sm 0.2 Ce 0.8 o 19 Preparation and Performance Test of (SDC)|SDC|BSCF+SDC Hollow Fiber SOFC

[0058] First, 5g of polyvinyl butyral, 40g of ethylene glycol, 10g of butanone, 20g of N,N-dimethyl sulfoxide were pre-mixed, and then 40g of NiO and 60g of SDC powder were weighed and added to a stainless steel ball mill tank, and ball milled After 48 h, an organic-metal oxide slurry was formed. After vacuum degassing the above slurry, a number of anode blanks were obtained by film-making mold technology. The blanks were dried at 100°C for 24h in a vacuum state, and then placed in an electric furnace for heat treatment at 1000°C for 5h (the heating rate was 5°C / min) to obtain a dry green body (inner diameter 1mm, thickness 0.6mm, length 150mm).

[0059]Then, 10 g of ScSZ electrolyte powder, 10 g of ethylene glycol, 10 g of toluene, and 80 g of isopropanol were added into a ball mill jar, and ball milled at 500 rpm for 2 h to prepare an electrolyte slurry. T...

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Abstract

The invention discloses a method for preparing a hollow fiber type solid oxide fuel cell, comprising the following steps of: adding anode material into an organic solvent containing organisms to mix evenly and produce an anode billet, evenly spraying organic solvent suspension containing electrolyte powder onto the thermally treated anode billet to produce an electrolyte layer; adding cathode powder and an organic pore-forming agent into an organic solvent to disperse evenly to produce an organism suspension containing the cathode powder and spraying the same onto the electrolyte layer uniformly to produce the hollow fiber type solid oxide fuel cell after thermal treatment. In the method, due to the adoption of the hollow fiber type SOFC structure, the diameter of a tube type SOFC is greatly reduced, the power density of the SOFC in unit area is increased by three to ten times. Meanwhile, the reduction of the diameter also greatly reduces the thicknesses of electrodes and electrolytes, and hence the resistance on the electrodes and the electrolytes is reduced correspondingly and the performance of the cell is improved. The method can cut the preparation cost and simplify the preparation technology.

Description

technical field [0001] The invention belongs to the fields of new energy, material processing and electric power, and in particular relates to a preparation method of a hollow fiber solid oxide fuel cell. Background technique [0002] A solid oxide fuel cell (SOFC) is a device that converts chemical energy directly into electrical energy. It consists of a layer of dense electrolyte and two layers of porous electrodes. The entire battery is made of solid materials, which enables the battery life to reach 40,000 to 80,000 hours. Different from conventional power generation methods, SOFC does not require large motors to participate in power generation, so the whole process is very quiet. At the same time, there is no need to use lubricating oil to maintain the motor, which reduces the cost of using SOFC. The working temperature of SOFC is relatively high (500-1000°C), which enables the power generation efficiency of SOFC to reach 40%-50%. If the waste heat is used for heat eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02H01M8/106
CPCY02E60/523Y02E60/522Y02E60/50
Inventor 邵宗平周嵬冉然金万勤徐南平
Owner NANJING UNIV OF TECH