JP2003077489A - Structure of electrochemical reaction substrate - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] To provide a structure of an electrochemical reaction plate. SOLUTION: One side of a plate material is subjected to hot pressure, lithography,
A plurality of trenches having an appropriate depth-to-width ratio are formed by etching and injection molding or other methods, and further, through holes 3 of appropriate dimensions are formed on the plate material by optical equipment, laser punching or etching, An electrolyte is formed on the through hole and the surface of the plate material, a porous conductive material layer 6 and a catalyst material layer 7 are sequentially formed on the electrolyte layer 4, the surface area of the plate material is increased, the contact area of the electrolyte is increased, and A selective isolation layer 5 was formed on the electrolyte layer or between the two-layer plates to reduce the volume of the electrochemical reaction substrate having a high performance by reducing the problem of fuel permeation of the electrolyte.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an electrochemical reaction substrate, and more particularly, the surface area of the substrate and the total contact surface area of the electrolyte are increased to provide a highly functional electrochemical reaction substrate, and its battery volume is miniaturized. The structure of the electrochemical reaction substrate. INDUSTRIAL APPLICABILITY The structure of the electrochemical reaction substrate of the present invention is applied to fuel cells, electrochemical reactors, and detectors, and particularly achieves the most efficient operation of energy resources desired in the present science and technology.

[0002]

2. Description of the Related Art In terms of the operation of fuel cells, fuel cells have high power generation efficiency and almost no pollution, and their power generation efficiency is twice as high as that of general power generators. For example, a cell phone (cellul)
ar phone), laptop computer, GPS (glo
bal position system, pager, PDA (personal digital ass)
It is being operated by "sistant". These products not only require high functionality and versatility, but also light, thin, short and small requirements. A fuel cell is a device based on the principle that hydrogen gas (hydrogen liquid molecules such as alcohols) and oxygen gas are used as raw materials, and a chemical reaction is generated at these temperatures to generate electric energy. Therefore, a chemical reaction substrate of the fuel cell is used. The structure has a tremendous effect on the function and battery volume of the battery.

FIG. 1 shows a well-known traditional battery structure, in which a porous conductive material layer 6 and a catalyst material layer 7 are directly formed on both sides of an electrolyte layer 4 in order, and there is no plate material. A catalyst material layer 7 is formed on the top and bottom of the battery, two opposing porous conductive material layers 6 are provided on the catalyst material layer 7, and an electrolyte 4 is filled between the upper and lower opposing porous conductive material layers 6. However, if the function of this traditional battery is increased by the method of multi-layer deposition, the structure volume of the battery is inevitably increased.

[0004]

The main object of the present invention is to solve the above-mentioned drawbacks and to eliminate the existence of the above-mentioned drawbacks, ie the invention provides a structure of an electrochemical reaction substrate, which is It is assumed that the surface area is increased by forming a trench having an appropriate depth-width ratio on one surface of the substrate.

Another object of the present invention is to provide a kind of structure of an electrochemical reaction substrate, in which a through hole having an appropriate size is provided on the substrate, and an electrolyte is provided in the through hole and the substrate. It is assumed that the structure is formed on the surface of, and the contact area of the electrolyte and the structural strength are increased.

Another object of the present invention is to provide a kind of structure of an electrochemical reaction substrate, which enhances its function by increasing the contact area of the electrolyte of the substrate, and hence miniaturizes the battery volume. In addition, the structure is designed to have high functionality.

It is a further object of the present invention to provide a structure of an electrochemical reaction substrate, which comprises one selective isolation layer on one electrolyte layer or between two bilayer plates. The structure is formed to solve the problem of fuel permeation between electrolytes and to enhance the function.

[0008]

According to a first aspect of the present invention, there is provided a plate material, a plurality of trenches formed on one surface of the plate material and having an appropriate width-depth ratio, and having appropriate dimensions formed in the plate material. A plurality of through holes penetrating the plate material, an electrolyte layer formed on the surface of the plate material and the through holes, a selective isolation layer formed on the surface of the electrolyte layer, and the selective isolation layer. The structure of the electrochemical reaction substrate includes a porous conductive material layer formed on the surface and a catalyst material layer formed on the surface of the porous conductive material layer. The invention according to claim 2 has a two-layer type plate material in which one selective isolation layer is formed between two facing plate materials, and has an appropriate width-depth ratio formed on one surface of the two-layer type plate material. A plurality of trenches, a plurality of through holes formed in the two-layer plate material and having an appropriate size and penetrating the two-layer plate material, and an electrolyte formed in the surface of the two-layer plate material and in the through hole A layer, a porous conductive material layer formed on the surface of the electrolyte layer, and a catalyst material layer formed on the surface of the porous conductive material layer have an electrochemical reaction substrate structure.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention provides a kind of high-performance electrochemical reaction substrate structure, which is formed by hot pressing,
Lithography, etching, injection molding, and other methods are used to form a plurality of trenches having an appropriate depth-width ratio, and then optical devices, laser punching, or etching are used to form through-holes of appropriate dimensions on the plate material. ,
An electrolyte is formed on the through holes and the surface of the plate material, a porous conductive material layer and a catalyst material layer are sequentially formed on the electrolyte layer, the surface area of the plate material is increased, the contact area of the electrolyte is increased, and the electrolyte layer is formed. This is a structure in which a selective isolation layer is formed on the upper or the two-layer type plate material to reduce the problem of fuel permeation into the electrolyte to enhance the function, have a small volume, and have a high-performance electrochemical reaction substrate.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment of the Present Invention: FIGS. 2 to 7 are sectional views showing the structure manufacturing flow of the first embodiment of the high-performance electrochemical reaction substrate of the present invention. As shown in FIG. 2, it comprises a plate 1 having a thickness of 10 to 1000 μm.
Are selected from polymers, silicon wafers or metal oxides. As shown in FIG. 3, a plurality of trenches having an appropriate depth-width ratio are formed on one surface of the plate material 1 by hot pressing, etching, photolithography, and injection molding.
Then, a vertical through hole 3 having a hole size of 1 to 100 μm is formed in the plate material 1 by an optical device or a method of laser punching and etching, and the through hole 3 penetrates the vertical plate material 1, and its structure is shown in FIG. As shown.

As shown in FIG. 5, an electrolyte layer 4 is formed on the surface of the through hole 3 and the plate material 1 by an impregnation and coating method,
The structure of the through hole 3 increases the contact area and structural strength between the electrolyte layer 4 and the plate material 1, and the material of the electrolyte layer is selected from a polymer and a solid electrolyte. As shown in FIG. 6, the electrolyte layer 4 is screen-printed, CVD, sprayed, dip-coated, spin-coated, or electroless-plated.
The selective isolation layer 5 is formed on the electrolyte layer by the method of sol plating or sputtering, and the property that the fuel does not pass through the selective isolation layer 5 reduces the problem of fuel permeation into the electrolyte. The selective isolation layer 5 is a molecular isolation layer or an ion isolation layer and has a thickness of 100 to 300 μm.
m. A porous conductive material layer 6 having a thickness of 10 to 500 μm is further formed on the selective isolation layer 5 by a method such as CVD, screen printing, sputtering, spraying, dip coating, spin coating, and electroless plating. The porous conductive material layer 6 is selected from graphite, gold, platinum, palladium, diamond containing boron, refractory metal, and conductive refractory metal composite. As shown in FIG. 7, a catalyst material layer 7 is formed on the porous conductive material layer 6 by sputtering, CVD, or electroless plating, and the catalyst material layer 7 is made of a noble metal, a noble metal alloy, or a noble metal composite. Selected from material,
The thickness is set to 5 to 1000Å, and a highly functional electrochemical reaction substrate having a high surface area is formed by the above steps.

Second Embodiment of the Invention: FIGS. 8 to 12
FIG. 8 is a sectional view showing the manufacturing flow of the structure of the second embodiment of the high-performance electrochemical reaction substrate of the present invention. As shown in FIG. 8, screen printing, CVD, spraying, between two opposing plate materials of the two-layer plate material 2 having a thickness of 10 to 1000 μm,
The selective isolation layer 5 is formed by a method such as sputtering, dip coating, spin coating, and electroless plating, and the characteristic that the fuel does not pass through the selective isolation layer 5 is used to reduce the problem of fuel electrolyte permeation. The selective isolation layer 5 is a molecular isolation layer or an ion isolation layer, and has a thickness of 100 to 300 μm. A plurality of trenches having an appropriate depth width ratio are formed on the one surface of the two-layer plate material 2 by a method such as hot pressing, lithography, injection molding, and etching, and the two layers are formed. The formula plate material 2 is selected from materials such as polymers, silicon wafers and metal oxides. As shown in FIG. 9, a vertical through hole 3 having a hole diameter of 1 to 100 μm is formed in the two-layer plate material 2 by a method such as an optical device or laser punching or etching.
The through hole 33 vertically penetrates the two-layer plate material 2.

As shown in FIG. 10, an electrolyte is formed in the through holes 3 by the method of impregnation and coating, and an electrolyte layer 4 is formed on the surface of the two-layer plate material 2. The electrolyte layer 4 is selected from a polymer and a solid electrolyte. As shown in FIG. 11, a porous conductive material layer 6 having a thickness of 10 to 500 μm is formed on the electrolyte layer 4 by the methods of CVD, screen printing, sputtering, spraying, dip coating, spin coating and electroless plating. The formed porous conductive material layer 6 is selected from graphite, gold, platinum, palladium, boron-containing diamond, refractory metal, and conductive refractory metal composite. Finally, a catalyst material layer 7 is formed on the porous conductive material layer 6 by a method such as sputtering, CVD or electroless plating, and the catalyst material layer 7 is selected from the materials of noble metal, noble metal alloy and noble metal composite. , Its thickness is 5 ~ 1000Å
According to the above steps, a highly functional electrochemical reaction substrate having a small volume and a high surface area is formed.

The above examples are for explaining the present invention, and do not limit the scope of the present invention.
Any modification or alteration of detail that can be made based on the present invention shall fall within the scope of the present invention.

[0015]

The present invention provides a kind of structure of an electrochemical reaction substrate, which has a plurality of suitable depth-width ratios on one surface of a plate material by hot pressing, lithography, etching and injection molding. A trench is formed, and then a through hole having an appropriate size is formed on the plate material by an optical device, laser punching or etching method, an electrolyte is formed on the through hole and the plate material surface, and a porous layer is formed on the electrolyte layer. The conductive material layer and the catalyst material layer are sequentially formed to increase the surface area of the plate material, increase the contact area of the electrolyte, and form the selective isolation layer on the electrolyte layer or between the two-layer type plate materials, and the fuel electrolyte The electrochemical reaction substrate has a high function by enhancing the function by the phenomenon of permeation, and has a high function.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a known fuel cell.

FIG. 2 is a sectional view showing the manufacturing flow of the first embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 3 is a sectional view showing the manufacturing flow of the first embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 4 is a sectional view showing the manufacturing flow of the first embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 5 is a sectional view showing the manufacturing flow of the first embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 6 is a sectional view showing the manufacturing flow of the first embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 7 is a sectional view showing the manufacturing flow of the first embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 8 is a sectional view showing the manufacturing flow of the second embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 9 is a sectional view showing the manufacturing flow of the second embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 10 is a manufacturing flow display sectional view of a second embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 11 is a sectional view showing the manufacturing flow of the second embodiment of the high-performance electrochemical reaction substrate of the present invention.

FIG. 12 is a manufacturing flow display sectional view of a second embodiment of the high-performance electrochemical reaction substrate of the present invention.

[Explanation of symbols]

1 plate material 2 two-layer board 3 through holes 4 Electrolyte layer 5 Selective isolation layer 6 Porous conductive material layer 7 Catalyst material layer

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Luo             6th floor, 112th street, 4th floor, Renai Road, Taipei City, Taiwan F-term (reference) 4K011 AA11 AA13 CA03 CA06                 5H018 AA02 AS01 BB05 BB07 CC06                       DD08 EE03 EE05 EE06                 5H026 AA02 BB02 BB04 CC01 CC03                       CX04 EE02 EE05 EE06 HH03

Claims (2)

[Claims] 1. A plate member, a plurality of trenches formed on one surface of the plate member and having an appropriate width-depth ratio, and a plurality of through holes formed in the plate member and having appropriate dimensions and penetrating the plate member. An electrolyte layer formed on the surface of the plate material and in the through holes, a selective isolation layer formed on the surface of the electrolyte layer, and a porous conductive material layer formed on the surface of the selective isolation layer. , A structure of an electrochemical reaction substrate composed of a catalyst material layer formed on the surface of the porous conductive material layer. 2. A two-layer type plate material in which one selective isolation layer is formed between two facing plate materials, and a plurality of two-layer type plate materials formed on one surface and having an appropriate width-depth ratio. A trench, a plurality of through holes formed in the two-layer plate material and having appropriate dimensions and penetrating the two-layer plate material, and an electrolyte layer formed on the surface of the two-layer plate material and in the through-holes A structure of an electrochemical reaction substrate comprising a porous conductive material layer formed on the surface of the electrolyte layer, and a catalyst material layer formed on the surface of the porous conductive material layer.