Solid oxide fuel cell structure facilitating edge sealing

Abstract

The invention relates to a solid oxide fuel cell structure facilitating edge sealing. The solid oxide fuel cell structure is formed by sealing a solid oxide fuel cell sheet through a sealing material,and a transition film layer covers the peripheral edge of the solid oxide fuel cell sheet and is used for connecting the solid oxide fuel cell sheet and the sealing material. The transition film layer sequentially comprises an inner side film layer, a middle transition layer and an outer side film layer from inside to outside. The material of the inner side film layer is the same as that of a supporting body layer. The material of the outer film layer is the same as that of the sealing material. The material of the middle transition layer is composed of the material of the support body layerand the packaging material. The transition film layer not only can be well connected with the solid oxide fuel cell sheet, but also is convenient to sinter during sealing, so the effects of connectingthe solid oxide fuel cell sheet with the sealing material and improving the edge sealing performance of the solid oxide fuel cell sheet are achieved, and the problems of gas leakages of the solid oxide fuel cell are solved.

Description

technical field [0001] The invention relates to the field of cell production, in particular to a solid oxide fuel cell structure that facilitates edge sealing, which is used to improve the edge sealing performance of a flat solid oxide fuel cell and reduce the risk of edge leakage or gas crossover. The coming efficiency drops. Background technique [0002] Solid oxide fuel cell (SOFC) is an all-solid-state chemical power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy at medium and high temperatures. Solid oxide fuel cells are attracting more and more attention due to their advantages of cleanliness, high efficiency and no noise. [0003] At present, the basic power generation units of common solid oxide fuel cells mainly include two types: tubular type and flat type. Compared with the more mature tubular type solid oxide fuel However, due to the inconsistency in the physical properties of the battery sheet and the...

AI Technical Summary

Problems solved by technology

The gas leakage problem has always restricted the development of flat solid oxide fuel cells, especially in the cold and hot cycle of multiple starts and stops, this problem will be multiplied, resulting in a significant decrease in the power generation efficiency of the system

The Chinese patent with the application number 2018100237689 and the application date of 2018.01.10: Low-temperature sealing structure and sealing method for solid oxide fuel cells discloses a sealing structure of stainless steel connectors and battery sheets, but the process Complicated, inconvenient, and poor in versatility

[0004] To sum up, there is currently no reliable, economical, simple and practical method that can solve the problem of edge sealing of solid oxide fuel cells and the resulting gas leakage.

Images