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Dual ionic single fuel cell

A single battery and dual-ion technology, which is applied in the direction of fuel cells, fuel cell additives, fuel cell components, etc., can solve the problems of large drainage resistance, small pore size, and affecting battery performance, so as to improve battery performance and increase Effects on battery life

Active Publication Date: 2014-11-19
先进储能材料国家工程研究中心有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Dual ionic single fuel cell

Examples

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Embodiment 1

[0016] A dual-ion fuel cell with a flat structure, such as figure 1 As shown, it includes a positive plate 1, a solid electrolyte 3, and a negative plate 2 stacked in sequence. A current collector 4 is fixed on the outer contact surface of the positive plate 1 and the negative plate 2, and several conductors are provided on the current collector 4. The launder 6 is used for the passage of hydrogen or oxygen. The size of the positive plate 1 is 7cm×7cm×50μm, the material is NiO / BCZY, the size of the negative plate 2 is 7cm×7cm×20μm, and the material is BCZY / LSCF , The size of the solid electrolyte 3 is 7cm×7cm×10μm, the material is BCZY, which is a single-component electrolyte, and there are several parallel channels 5 in the same direction in the solid electrolyte 3. The direction of the channel 5 is the same as that of the solid electrolyte. The length direction of the channel 3 is parallel, the channel 5 is located in the middle of the solid electrolyte 3 and arranged in a str...

Embodiment 2

[0020] A dual-ion fuel cell whose structure is similar to that of Example 1. The difference is that the channel is located in the solid electrolyte near the negative electrode, and the cross-section of the channel is 2μm round shape.

Embodiment 3

[0022] A dual-ion fuel cell has a structure similar to the dual-ion fuel cell of Example 1, except that the cross section of the channel is a rectangle with four sides and a length of 5 μm.

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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 fuel cell. Background technique [0002] According to different places where water is produced, fuel cells can be divided into the following three types: [0003] a) Hydrogen ion fuel cell: When the battery is working, the electrolyte only transmits H + , Water is generated on the cathode side, such as proton exchange membrane fuel cell (PEMFC) and direct methanol fuel cell (DMFC) are of this type. [0004] b) Oxygen ion fuel cell: When the battery is working, the electrolyte only transmits O 2- , Water is generated on the anode side, such as solid oxide fuel cell (SOFC) is this type. [0005] c) Dual-ion fuel cell: When the battery is working, the electrolyte simultaneously transmits H + And O 2- , But water is generated neither on the cathode nor on the anode side, but in the electrolyte. The electrolyte is dense on both sides close to the electrode, with gaps in the middle layer, H + An...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02
CPCH01M8/04291H01M8/1016Y02E60/50
Inventor 欧腾蛟石建珍张洪涛蒋庆来王一乔
Owner 先进储能材料国家工程研究中心有限责任公司
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