JPH05217590A - Fuel cell for teaching material - Google Patents

Abstract

PURPOSE:To continuously take out the electric energy by installing a cartridge type auxiliary tank in the vicinity of a fuel chamber, and providing a cassette type electrode in which a honeycomb structure electrolyte aspiration film is assembled, catalyst, and a container which possesses chemical resistance and pressure tightness and replenishing fuel. CONSTITUTION:A bottom cover 8 is demounted, and an electrode which is formed by plating a catalyst which is easily ionized with the liquid and gas of fuel on the steel plate wire of an electrode 3 is inserted into a container 2. The bottom 8 is closed, and an electrolyte is charged to the full from a inlet port 1. An auxiliary tank 7, pipe 9 and an electrolyte adjusting port 6 are connected by a pipe 10. Fuel substance is poured up to the upper edge of a communication pipe 5 from one H-shaped inlet port 1. The pushed-out electrolyte is collected into the tank 7. The tank 7 has the nearly equal capacity to the H shaped part. When a load is connected with a lead wire 4, operation starts. The inside of the container 2 is decompressed by the consumption of fuel, and the container 2 is filled with the electrolyte supplied form the tank 7 by the syphon principle. When fuel is exhausted, fuel is supplied, and then electric current flows for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is different from a disposable battery such as a manganese dry battery, in which a container is replenished with a liquid or a gas as a fuel after use, so that electric energy can be continuously taken out directly. It is a device. At present, it is carried out in the laboratory, but has not been put to practical use as a teaching material. The problems that cannot be made into teaching materials are: (1) The gas circulation device is required, and the battery container becomes large. (2) The catalyst required for the electrode is expensive and there is a problem in manufacturing. Electrodes cannot be replaced. (3) Charging is too slow and the load does not work, making it unsuitable for teaching materials. However, it has not been put to practical use even though it has been recognized as a valuable material as a teaching material. The problem will be specifically explained. Problem of battery container of (1) a. The electrodes cannot be replaced because they are enclosed in an airtight box. Therefore, it is not possible to verify the difference in electromotive force, current density, etc. due to the difference in substance. I. In the conventional laboratory device, since the fuel is continuously flowed, the device is separately required, which is a large device. C. Experimentally, cut the bottom of the test tube into a container,
We devise a battery container such as cutting a thick vinyl pipe to make it a container, but even when doing it in the laboratory,
Not stable and not suitable for teaching materials. D. In addition, a beaker may be used as the battery container.
Standing in a beaker containing a large amount of electrolyte is dangerous. E. A container such as a beaker requires a large amount of electrolytic solution. F. When the container of c or d is used, the discharge and charge efficiency is lowered because the circuit is connected after the fuel has turned into ions and then once outside the container. There are drawbacks such as. Problems of the electrode of (2) a. Conventionally, it is not easy to fabricate a synthetic wheel in a laboratory by thinly cutting it with a rock cutter, applying an adhesive on it, and performing electroplating. I. Despite the large size of the electrode, it does not provide much current. C. It uses a catalyst such as platinum wire mesh or platinum black for the electrodes and is very expensive. D. In the conventional methods, the electrodes are enclosed in the fuel container, and the strength of current and the difference in voltage due to the difference in electrodes cannot be easily measured. E. Other methods such as adhering a catalyst to a porous ceramic plate as an electrode or adhering a cation exchange membrane to a catalyst are difficult to manufacture in a laboratory. Charging in (3) is very gentle. Conventional fuel cells in the laboratory cannot draw a lot of electric current at one time. Therefore, it does not work as expected when loaded. From the above points, there is no fuel cell for teaching materials. The present invention is a simple device that eliminates the above-mentioned various drawbacks.At present, only large companies are constructing a demonstration plant by making full use of cutting-edge technology, and verifying the basis of fuel cell power generation for children and students. It is a device to make it easy to understand. At the same time, it is said that discarded manganese dry batteries and the like are also sources of environmental pollution, and fuel cells are also pollution-free batteries, so they can be used as valuable teaching materials for environmental education. Now, the structure will be described as follows: (1) Invention of battery container (2) Invention of cassette type electrode (3) Honeycomb structure electrolyte absorption membrane. The whole is H-shaped and has an electrolyte auxiliary tank. The electrodes can be replaced. In addition, the entire device uses a material that is resistant to chemicals and withstands pressure, has high safety, and is most convenient. (1) Invention of Battery Container (a) Remove the bottom lid 8. (A) From the bottom, the electrode 3 is inserted into the battery case 2 on the steel plate wire, which is plated with a catalyst that easily ionizes a liquid or gas serving as a fuel. (C) Tighten the bottom cover 8. (D) From the fuel injection port 1, a container is filled with an electrolytic solution which is a substance for moving the ionized fuel. (E) The connecting pipe 9 is connected to the electrolytic solution auxiliary tank 7 and the connecting pipe 10 is connected to the electrolytic solution adjusting port 6. (F) One of the H-shaped fuel injection ports 1 is opened to fill the combustible substance up to the upper part of the communication pipe 5. At this time, the electrolytic solution pushed out passes through 6, 10 and 9 and is collected in the electrolytic solution auxiliary tank 7. Close inlet 1. (G) Similarly, the combustible substance is filled into the other of the H type up to the upper part of the communication pipe 5. Also at this time, the electrolytic solution pushed out passes through 6, 10 and 9 and is collected in the electrolytic solution auxiliary tank 7. Close inlet 1. Therefore, the electrolytic solution auxiliary tank 7 has a volume substantially equal to the volume of the H-shaped portion. (H) It operates when a load (radio or the like) is connected to the lead wire 4. (V) As the burned substance and the burnable substance are consumed, the pressure inside the battery container 2 is reduced. At this time, the electrolyte solution from the electrolyte solution auxiliary tank 7 is 9, 10, 6 by the principle of sifon.
And the inside of the battery container 2 is automatically filled. (K) When the fuel is exhausted, repeat steps (F) and (K). By repeating (F) and (K) as needed, the fuel can be replenished only for a considerably longer time than a disposable manganese dry cell for 6 months or 1 year. Containers are also valuable because they can withstand use and make effective use of resources. (2) Invention of cassette type electrode The present invention relates to an electrode of a fuel cell for teaching material. The electrodes in the laboratory were encapsulated. There is no cassette type. In addition, the catalyst is very expensive, such as platinum wire mesh or nickel wire mesh plated with platinum. Steel wool is sometimes plated with palladium, but it is not durable. In order to improve these points, we devised a structure using the following materials. Now
To explain the structure, (a) a steel plate wire is used for the electrode 3. The plate wire is plated with a catalyst that easily ionizes the fuel. (A) For the core 11 of the electrode, a substance that is not attacked by chemicals is selected. (C) The honeycomb structure electrolyte absorbing film 12 is incorporated.
Use a material that easily absorbs the electrolyte solution. (D) Glue 11 and 12 and wrap 3 from above. (E) and (d) have a size that allows them to be put in and taken out from the container 2 freely. With the above structure, it is possible to easily measure different current densities and electromotive forces for each substance by exchanging only the electrodes, which is unprecedented, and it is very effective for experimental verification in the field of physical chemistry. (3) The drawback that the charging of the honeycomb structure electrolyte wicking membrane fuel cell is very slow can be dramatically improved. Even if a load (radio etc.) is connected, the depolarization will be gentle, and it will be a fuel cell that can withstand experiments and verifications as teaching materials. This is because the contact area of the three-phase interface of gas, electrolyte and catalyst was greatly improved by sucking up the electrolyte to the upper part. From the above, it is believed that the fuel cell for teaching materials paves the way for a practical battery because it will be heard for a long time when a load is applied (radio connection etc.). Steel plate wire is strong and durable. The following is an example of the embodiment of the battery container 2 and an embodiment of the honeycomb structure type cassette electrode 3. (A) The container 2 has a box shape, and a portion corresponding to the communication pipe 5 is enlarged to the entire inside of the container to form a semipermeable membrane, an electrolyte suction membrane,
A container that encloses the electrodes with packing, etc., inserts them between the Yin and Yang fuel chambers, and partitions them with a mount system. (B) The container 2 has a circular shape, and the portion corresponding to the communication pipe 5 is enlarged to the entire inside of the container, and the semipermeable membrane, the electrolyte solution suction membrane, the electrodes are surrounded by packing, etc. A method to obtain high power by partitioning with a method and increasing the number of containers as needed. (C) Method of palladium plating on flat steel plate wire (d) Method of nickel plating on flat steel plate wire (e) Method of platinum black plating on flat steel plate wire

[Brief description of drawings] FIG. 1 is a front view of the present invention. FIG. 2 is an enlarged front view of the cassette type electrode of the present invention. FIG. 3 is an enlarged sectional view of an electrode of the present invention. [Explanation of symbols] (1) is the fuel inlet (2) is a battery container (3) is a cassette type electrode (4) is a conductor (5) is a communication pipe (6) is an electrolyte discharge / suction pipe (7) is an electrolyte auxiliary tank (8) is the bottom lid (9) is a pipe for draining / suctioning the electrolyte into the auxiliary tank (10) is a connecting pipe of (6) and (9) (11) is the core of the cassette-type electrode (12) is a honeycomb structure electrolyte absorption membrane

Claims (1)

Claims: (a) Cartridge type electrolyte auxiliary tank 7
Is installed beside the fuel chamber 4. (A) A cassette-type electrode in which the honeycomb structure electrolyte wicking film 3 is incorporated. (C) The honeycomb structure cassette type electrode 3 uses a steel plate wire, and the catalyst uses a substance that easily ionizes fuel. (D) Battery container In FIG. 1, a material that is not easily attacked by chemicals is used. (E) Battery container FIG. 1 uses a material that withstands pressure. 2. A battery container. A fuel cell for teaching material according to claim 1, wherein (a), (b), (c), (d), and (e) of (1) are included in FIG.