Centrifugal preparation method of electrolyte thin film of solid oxide fuel cell
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A technology of electrolyte film and solid oxide, which is applied in the field of preparation of solid oxide fuel cell electrolyte film, can solve problems such as easy cracking, influence of operating environment, complex process, etc., and achieve convenient operation, good consistency and good uniformity Effect
Inactive Publication Date: 2015-11-11
ANHUI UNIV OF SCI & TECH
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Problems solved by technology
During the operation of the dry pressing method, the pre-pressing of the anode powder is easy to crack, the electrolyte powder is unevenly spread, the process is complex and affected by the operating environment, and is not suitable for mass production; another casting method, this method is controlled Drying control in the preparation process, many types of slurry additives, film shrinkage, relative density and other issues still need to be resolved
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Embodiment 1
[0030] ①Measure 100mL of absolute ethanol as solvent, add 2gSm 0.2 Ce 0.8 o 1.9 (SDC) electrolyte powder, put into the planetary ball mill with 200r / min ball mill for 24h, then add 0.5% polyethylene glycol (PEG) auxiliary agent and continue to mix and mill for 10h to obtain uniform and stable SDC slurry, ready for use;
[0031] ②The anode support body of NiO-SDC was prepared by dry pressing method, and it was calcined at high temperature to be ready for use;
[0032] ③ Bond one side of the NiO-SDC anode support in the above step ② with scotch tape and fix it on an anode support platform, then put the platform into a centrifuge tube and place it in a clean centrifuge tube. The good SDC slurry is slowly injected into the centrifuge tube until the NiO-SDC anode support is completely submerged;
[0033] ④Then put the centrifuge tube prepared in the above ③ into the centrifuge, turn on the centrifuge, make it run at a speed of 3999r / min for 10min, and form a layer of SDC electro...
Embodiment 2
[0038] ①Measure 100mL of absolute ethanol as solvent, add 2gSm 0.2 Ce 0.8 o 1.9 (SDC) electrolyte powder, put into the planetary ball mill with 200r / min ball mill for 24h, then add 0.5% polyethylene glycol (PEG) auxiliary agent and continue to mix and mill for 10h to obtain uniform and stable SDC slurry, ready for use;
[0039] ②The anode support body of NiO-SDC was prepared by dry pressing method, and it was calcined at high temperature to be ready for use;
[0040] ③ Bond one side of the NiO-SDC anode support in the above step ② with scotch tape and fix it on an anode support platform, then put the platform into a centrifuge tube and place it in a clean centrifuge tube. The good SDC slurry is slowly injected into the centrifuge tube until the NiO-SDC anode support is completely submerged;
[0041] ④Then put the centrifuge tube prepared in the above ③ into the centrifuge, turn on the centrifuge, make it run at a speed of 3999r / min for 10min, and form a layer of SDC electro...
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Abstract
The invention discloses a centrifugal preparation method of an electrolyte thin film of a solid oxide fuel cell. The centrifugal preparation method comprises the following steps: adding electrolyte powder to absolute ethyl alcohol, carrying out mixing and ball-milling, adding a polyethylene glycol (PEG) assistant, and further carrying out mixed grinding to obtain uniform and stable electrolyte slurry; fixing an anode support body of which one surface is bound by a transparent adhesive tape on an anode support body bearing platform, putting the bearing platform into a clean centrifugal tube, and slowly injecting the electrolyte slurry into the centrifugal tube until the anode support body is completely immersed; starting a centrifugal machine, forming a uniform electrolyte film base body on the surface of the anode support body, carrying out thermal treatment, and centrifuging for a plurality of times; and finally sintering the electrolyte film base body at a high temperature to form an electrolyte thin film body. The electrolyte thin film prepared by the method is uniform, compact, smooth and good in uniformity; the centrifugal preparation method is low in cost, simple in technology and convenient to operate; the thickness of the electrolyte thin film can be controlled by the running frequency and time of the centrifugal machine; and the centrifugal preparation method adapts to industrial production on a large scale.
Description
technical field [0001] The invention relates to a preparation method of a solid oxide fuel cell electrolyte film, in particular to a centrifugal preparation method of a solid oxide fuel cell electrolyte film. Background technique [0002] A solid oxide fuel cell (SOFC) is a device that can directly convert chemical energy into electrical energy. As long as the reactants are continuously input and the products are continuously output, it can continuously supply external power. Compared with other energy conversion devices, SOFC has the following advantages: it is not limited by the Carnot cycle, and can efficiently use energy in cogeneration; low pollutant emissions, low noise, and is more environmentally friendly than fossil fuels; Strong fuel adaptability, hydrogen, natural gas, coal gas, biogas and hydrocarbon can be used as fuel; modular design, flexible location and fast response. Therefore, it has attracted extensive attention in solving energy and environmental proble...
Claims
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