A kind of preparation method of dual-ion type fuel cell

Abstract

The invention provides a preparation method of a double-ionic single fuel cell. An electrolyte is sprayed on an anode substrate by a wet spraying method to form an anode plate; the anode plate is subjected to thermal treatment at 1300-1500 DEG C for 5-6 hours after being compacted; the anode plate subjected to thermal treatment is put into an environment full of a protective gas; a hollow-making material is deposited in the direction parallel to the width or the length of the anode plate at every interval of a certain distance by a pulse laser deposition method; the hollow-making material is in a strip form and is cooled; the electrolyte is sprayed by the wet spraying method and coats the hollow-making material to form an electrolyte layer; a cathode plate is superposed on the electrolyte layer; the anode plate / the electrolyte layer / the cathode plate is subjected to thermal treatment at 1300-1500 DEG C for 4-5 hours after being compacted and then is cooled; and a current collector is arranged on the outer contact surface of the anode plate and the cathode plate. The method provided by the invention is simple in process.

Description

technical field [0001] The invention relates to a method for preparing a single fuel cell, in particular to a method for preparing a dual-ion type fuel cell. Background technique [0002] Depending on where the water is generated, fuel cells can be divided into the following three types: [0003] a) Hydrogen ion fuel cell: When the battery is working, the electrolyte only transfers H + , water is generated on the cathode side, such as proton exchange membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC) are of this type. [0004] b) Oxygen ion fuel cell: when the battery is working, the electrolyte only transfers O 2- , water is generated on the anode side, such as in solid oxide fuel cells (SOFC). [0005] c) Dual-ion fuel cell: when the battery is working, the electrolyte transmits H at the same time + and O 2- , but water is generated neither on the cathode nor the anode side, but in the electrolyte. The electrolyte is dense on both sides close to the el...

AI Technical Summary

Problems solved by technology

The advantage of this design is that it reduces the process steps and difficulty in the preparation process. The structure of the electrolyte layer is relatively stable during the sintering process, but the water vapor discharge channel is not deliberately fixed, but is formed naturally between the particles of the electrolyte material itself. However, the porous microscopic channels naturally formed between electrolyte particles have small pore diameters and curved drainage paths, which will generate large drainage resistance and affect battery performance.