Chip-type solid oxide fuel cell with quasi-symmetric structure and manufacturing method therefor

Abstract

The invention relates to the technical field of a solid oxide fuel cell, and in particular to a chip-type solid oxide fuel cell with a quasi-symmetric structure and a manufacturing method therefor. According to the chip-type solid oxide fuel cell with the quasi-symmetric structure and the manufacturing method therefor, the adoption of the chip-type solid oxide fuel cell with the quasi-symmetric structure solves the problem of unmatched sintering and shrinkage of a conventional nickel-based positive electrode supporting type single battery, the flatness of the single battery is fully ensured, and the sealing success rate in battery stacking is improved; the problem of sudden change of volume of the conventional nickel-based positive electrode supporting type single battery in an oxidation-reduction process is solved, the cold and hot circulation capacity of the battery stack is improved, and the service life of the battery stack is prolonged; and the chemical compatibility between novel electrodes with higher catalytic activity and electrolyte materials is realized, the working temperature of the single battery is reduced, and the power output level of the single battery is improved.

Description

technical field [0001] The invention relates to the technical field of solid oxide fuel cells, in particular to a sheet-type solid oxide fuel cell with a quasi-symmetric structure and a manufacturing method thereof. Background technique [0002] A solid oxide fuel cell is an all-solid-state electrochemical device that directly converts the chemical energy of hydrogen, natural gas, and biomass gas fuels into electrical energy. It has significant advantages such as high efficiency, cleanliness and no noise. SOFC single cells can be divided into two basic types: tube type and sheet type. Among them, the chip single cell has been widely valued due to its advantages of high output power density per unit volume and more compact stacking structure. At present, one of the development directions of chip SOFC single cells is medium and low temperature. The reason is that it can reduce the sealing requirements of single cells when stacking, reduce the material requirements for bipola...

AI Technical Summary

Problems solved by technology

[0004] Based on the above-mentioned problems existing in the prior art, the present invention provides a chip-type solid oxide fuel cell with a quasi-symmetric structure and a manufacturing method thereof. The use of the chip-type solid oxide fuel cell with a quasi-symmetric structure solves conventional The problem of sintering shrinkage mismatch of nickel-based anode-supported single cells fully ensures the flatness of single cells and improves the success rate of sealing when batteries are stacked; solves the volume of conventional nickel-based anode-supported single cells in the oxidation-reduction process To solve the problem of sudden change, improve the cold and hot cycle capability of the battery stack, and improve the life of the battery stack; solve the chemical compatibility problem between the new electrode with higher catalytic activity and the electrolyte material, reduce the operating temperature of the single cell, and increase the power of the single cell output level