Method for preparing Fe-element doped barium cerate solid electrolyte by using sol-gel self-combustion method

A technology of solid electrolyte and self-combustion method, which is applied in the direction of fuel cells, circuits, electrical components, etc., can solve the problems of high cost of use and affect the progress of industrialization, and achieve the effect of improved electrical conductivity and good electrical conductivity

Inactive Publication Date: 2019-09-10
HEFEI UNIV
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Problems solved by technology

The application of SOFC to distributed energy has the advantages of high power generation efficiency, high waste heat quality, no vibration, low noise, and green emissions. In recent years, larg

Method used

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  • Method for preparing Fe-element doped barium cerate solid electrolyte by using sol-gel self-combustion method
  • Method for preparing Fe-element doped barium cerate solid electrolyte by using sol-gel self-combustion method
  • Method for preparing Fe-element doped barium cerate solid electrolyte by using sol-gel self-combustion method

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Embodiment 1

[0030] A method for preparing Fe element-doped barium cerate solid electrolyte by sol-gel self-combustion method, the steps are as follows:

[0031] ①, according to the preparation of the product BaCe 1-x Fe x o 3-x The proportion of metal elements in the medium is accurately weighed on the electronic balance for the calculated Ce(NO 3 ) 3 ·6H 2 O, Ba(NO 3 ) 2 , Fe(NO 3 ) 3 9H 2 O respectively dissolve them in a beaker containing 100 mL of distilled water in turn, and stir to obtain a mixed solution. In Example 1, a total of 6 groups of experiments were carried out, corresponding to the values ​​of x in the product being 0, 0.1, 0.2, 0.25, 0.3, and 0.4.

[0032] ②. Add citric acid and ethylene glycol to the mixed solution. The amount of citric acid added is 1.5 times that of the total amount of metal ions, and the amount of ethylene glycol added is 1.2 times the amount of citric acid. After weighing, add Stir well in the mixed solution.

[0033] ③. Add ammonia wate...

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Abstract

The invention discloses a method for preparing Fe-element doped barium cerate solid electrolyte by using a sol-gel self-combustion method and relates to the technical field of solid electrolyte material preparation. The method comprises the following steps: dissolving cerous nitrate, barium nitrate and ferric nitrate into distilled water according to a BaCe1-xFexO3-x metal element ratio, and conducting uniform stirring so as to obtain a mixed solution; adding citric acid and ethylene glycol into the mixed solution, weighing the components, and uniformly stirring the components in the mixed solution; adjusting the pH value of the system, conducting heating stirring so as to obtain foamed gel, and drying the gel so as to obtain dry gel; putting the dry gel into a muffle furnace, heating andpresintering the dry gel, and keeping the temperature so as to obtain presintered loosened powder; and grinding the presintered loosened powder into fine powder, adding an adhesive into the fine powder, conducting tabletting, and finally conducting sintering. A series of electrolyte materials prepared by using the method have good and low conductive activation energy and ion conductivity and havegood electrolyte material properties, and feasibility of a Fe-element doped barium cerate-based electrolyte material is proved.

Description

technical field [0001] The invention relates to the technical field of preparation of solid electrolyte materials, in particular to a method for preparing Fe element-doped barium cerate solid electrolyte by a sol-gel self-combustion method. Background technique [0002] From a global point of view, the problem of energy shortage and ecological environment pollution is becoming more and more serious. Countries around the world are constantly researching and developing fuel cell technology, and actively exploring and developing battery technology that can achieve efficient energy conversion. Reduce damage to the environment. [0003] my country is a big energy-consuming country, and SOFC has a very broad application market prospect. Although SOFC has many advantages, the research and development of domestic scientific research institutes also has a certain foundation. The domestic journals published in the field of SOFC have shown rapid growth in the past ten years, but the do...

Claims

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Application Information

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IPC IPC(8): C04B35/50C04B35/624H01M8/124H01M8/126
CPCC04B35/50C04B35/624C04B2235/3215C04B2235/3272C04B2235/443C04B2235/96H01M8/124H01M8/126Y02E60/50Y02P70/50
Inventor 阳杰程继海陆井李东王敬泽周飞腾
Owner HEFEI UNIV
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