dual ion fuel cells

Abstract

The invention provides a dual ionic single fuel cell. The dual ionic single fuel cell comprises a positive electrode plate, solid electrolyte and a negative electrode plate which are sequentially overlapped, wherein the solid electrolyte is mono-component electrolyte; a plurality of channels with consistent directions and parallel to one another are formed in the solid electrolyte; the directions of the channels are parallel to the length direction or the width direction of the solid electrolyte. Through the dual ionic single fuel cell, water steam generated during reaction of the fuel cell can be conveniently dispersed out of the individual channels specifically arranged in the electrolyte, so that separation of H2O from H2 and O2 can be achieved, the concentrations of the H2 and the O2 in the electrode are not affected, the cell performance can be can improved, and the service life of the cell can be prolonged.

Description

technical field [0001] The invention relates to a single fuel cell, in particular to a dual-ion type fuel single 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 electrode, with gaps in the middle layer,...

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.

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