Cellular cavity-stage integrated fuel cell electrode and preparation method thereof

Abstract

The invention discloses a cellular cavity-stage integrated fuel cell electrode and a preparation method of the fuel cell electrode and belongs to the field of a fuel cell. Integrated design and manufacture of a cellular porous structure diffusion layer and a catalyst layer is contained. The cellular porous structure is formed by using a conductive 3D printing material to fast print. A cavity, a collector plate, the diffusion layer and the catalyst layer of the cellular porous structure in the cellular cavity-stage integrated fuel cell electrode are integrated to break through a design manner of separating the cavity, the collector plate, the diffusion layer and the catalyst layer in a traditional fuel cell. In the cellular porous structure, second-stage channels are distributed on the basis of first-stage channels, and therefore, such design greatly increases the catalytic activity superficial area, reduces mass transfer resistance and greatly improves discharging current of the electrode, and enables the structure of the electrode to be simple and compact, and the assembly and sealing to be convenient and easy.

Description

【Technical field】 [0001] The invention belongs to the field of fuel cells, and in particular relates to a honeycomb cavity-electrode integrated fuel cell electrode and a preparation method thereof. 【Background technique】 [0002] The structure of the traditional fuel cell is that the fuel chamber, the collector plate, the diffusion layer and the catalytic layer are closely arranged in sequence. This separation arrangement of the fuel chamber, the collector plate, the diffusion layer and the catalytic layer makes the size of the battery larger , The assembly and sealing are complicated, and the transmission resistance of the fuel increases, thereby reducing the performance of the battery. 【Content of invention】 [0003] The object of the present invention is to solve the above problems, and provide a fuel cell electrode with a honeycomb cavity-electrode integration and a preparation method thereof. Connected to form a first-level channel, and each hole is also distributed ...

AI Technical Summary

Problems solved by technology

[0002] The structure of the traditional fuel cell is that the fuel chamber, the collector plate, the diffusion layer and the catalytic layer are closely arranged in sequence. This separation arrangement of the fuel chamber, the collector plate, the diffusion layer and the catalytic layer makes the size of the battery larger , the assembly and sealing are complicated, and the transmission resistance of fuel increases, thereby reducing the performance of the battery

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