Preparation method of NaInO2-based composite material and electrolyte material of solid oxide fuel cell

By adjusting the ratio of raw materials and a simple mechanical mixing process, high-purity NaInO2 matrix composite materials were prepared and applied to SOFC electrolyte materials, which solved the problems of high temperature and complex processes in the preparation of existing NaInO2 materials, achieved low cost and efficient preparation, significantly reduced the working temperature of SOFC and improved battery performance.

CN119637930AActive Publication Date: 2025-03-18SHENYANG AEROSPACE UNIVERSITY
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Patent Information

Application Number
CN202411726215.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-03-18
Estimated Expiration
2044-11-28

AI Technical Summary

Technical Problem

The existing NaInO2 materials have high temperature requirements, complex process and high cost during the preparation process, which limits their large-scale production and application.

Method used

By adjusting the ratio of raw materials during the synthesis process, a pure phase NaInO2 was obtained and composited with In(OH)3 was used to prepare the composite material. A simple mechanical mixing process was used to reduce the process complexity and cost.

Benefits of technology

The efficient preparation of NaInO2-based composite materials is achieved, with high material purity and simple process. It is applied to electrolyte materials of SOFC for the first time, which significantly reduces the working temperature of SOFC and demonstrates good battery power output performance.

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Abstract

The invention discloses a preparation method of a NaInO2-based composite material, which comprises the following steps: step 1, mixing Na2CO3 and In2O3, dissolving in a 95% alcoholic solution, and stirring at a constant temperature to form a uniform mixed solution; step 2, drying the mixed solution to obtain precursor powder; 3, after calcining the precursor powder, cooling and grinding the precursor powder into fine powder; step 4, cleaning the finely crushed powder so as to remove redundant Na2CO3; 5, the cleaned powder is sequentially evaporated to dryness and ground, and finally dried fine powder is obtained; and step 6, mixing the dried fine powder with In (OH) 3 powder, and fully grinding to obtain the NaInO2 + In (OH) 3 composite material. Pure-phase NaInO2 is obtained by adjusting the proportion of raw materials in the synthesis process, the pure-phase NaInO2 is compounded with In (OH) 3 in different proportions, and the obtained composite material is applied to a power generation unit of the SOFC as an electrolyte for the first time, so that the working temperature of the SOFC is further reduced, and good battery power output performance is shown.
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