JPS60165054A - Sheetlike battery - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a battery in which the positive electrode is made of carbon and the negative electrode is made of metal such as zinc or aluminum.

Conventionally, this type of battery is generally constructed by using a carbon rod or a carbon plate as a positive electrode, and sealing a zinc can with a mixture impregnated with an electrolyte such as ammonium chloride.

Although this battery can be manufactured at low cost and is extremely economical, its shape is relatively bulky and its uses are limited.

The present invention is similar to conventional dry batteries in that the positive electrode is made of carbon and the negative electrode is made of metal such as zinc or aluminum, but it breaks the concept of conventional batteries of this type and makes it extremely thin to meet the desired demands. It is an object of the present invention to provide a battery that can be formed into a planar shape, and can also be formed into a cylindrical shape if desired, and has an extremely wide range of applications.

That is, in the sheet-like battery of the present invention, a coating layer containing fine carbon particles at a high density is formed on one side of a sheet-like material such as ion-permeable fiber paper, and a coating layer containing fine carbon particles at a high density is formed on the other side of the sheet-like material. It is made by adhering aluminum or zinc foil or fine powder to the aluminum or zinc via an electrolyte glue. Although the sheet-shaped battery of the present invention configured as described above has a small capacity per unit area, the capacity of this sheet-shaped battery is correlated with its area. At the same time, if the area is increased, it becomes possible to extract a relatively large amount of current.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 indicates a sheet-like material having ion permeability such as fiber paper, and one side of this fiber paper 1 is coated with black paint or black ink containing fine carbon particles at a high density. A coating layer 2 is formed. An aluminum foil 4 is adhered to the other surface of the sheet-like material 1 with an electrolyte paste 3 interposed therebetween. As this electrolyte paste, various known ones can be used, and -
An example is the use of starch-based thickeners. Also, although aluminum foil 4 is the most readily available and economical, zinc can be used instead. Furthermore,
Instead of such a foil-like material, fine powder of aluminum or zinc may be applied to the sheet-like material to form a coating layer made of these powders.

In the above-mentioned sheet-shaped battery, the coating layer 2 of carbon particles serves as the positive electrode, the sheet-shaped material 1 serves as the separator, and the aluminum foil 4, zinc foil, or a fine powder layer of these metals serves as the negative electrode. The output voltage varies mainly depending on the type of electrolyte, and the voltage was about 0.9V when office glue containing starch as the main component was used as the electrolyte. This cell can be extremely thin and - for example, I! containing carbon particles! The thickness of textile paper 1 is 0.05
111IIlte, the thickness of metal foil 2 is O, O-15n+m
The thickness of the adhesive electrolyte layer was set to 0.03 mm.
In this case, this battery has a total thickness of Q, 1m+n.

In particular, in the present invention, since the positive electrode is made of a coated layer of carbon particles, it is possible not only to make a battery with a wall thickness of several hundredths of a millimeter, but also to make a battery with a thickness of several hundredths of a millimeter. is a laminated bonding of two layers of fiber paper and metal foil @
Since it is only necessary to do this, it is extremely convenient in terms of manufacturing. In addition, when fine powder of aluminum or zinc is used as the negative electrode and formed by coating, it is sufficient to simply apply the positive and negative electrodes to both sides of the fiber paper, which not only allows the thickness of the battery to be several tens of microns. , its manufacture becomes extremely simple.

The above-mentioned battery is made of a sheet-like material such as fiber paper and metal foil or fine powder, and is extremely thin, so it can be cut into a desired shape from the rectangular plan view shown in Figure 1, for example. , it can be made into a circular battery as shown in FIG. In this case, this circular cell also has a voltage similar to the rectangular cell of FIG.

In this way, a relatively wide battery can be formed as shown in FIG. 1, and by cutting out a large number of batteries of a desired size and shape, batteries of the same voltage can be produced extremely efficiently.

In addition, although the above-mentioned sheet-shaped battery has a small output current per unit area, it is extremely thin, so it can be applied to electronic watches and pocket calculators that consume less current to make these devices even thinner. It is possible.

Furthermore, some of the recent electronic devices are driven by extremely low currents, or devices that require only voltage and almost no current, and the battery of the present invention can be applied extremely effectively to such devices. It will be done. Furthermore, since the battery of the present invention is extremely thin and inexpensive, it can be molded together with a device made of plastic, for example, and disposed of together with the device when the plastic device is disposed of. It is possible.

The output current of the above-mentioned sheet-shaped battery has a correlation with the area of the battery, and the output current of the batteries shown in Figures 1 and 2 is small, but in order to obtain a large current, it is necessary to A battery similar to that shown in FIG.
Take out one electrode from the center,
The other electrode may be taken out from the outer end surface.

This battery can take the form of a conventional cylindrical battery, and its output current can be made larger than that of the conventional cylindrical battery.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway and enlarged perspective view of a relatively wide sheet battery according to the present invention, and FIG. 2 is a circular battery punched out into a thin circular shape from the sheet battery of FIG. 1. A perspective view, FIG. 3 is a perspective view showing a state in which the sheet battery as shown in FIG. 1 is wound into a cylindrical shape. 1...Sheet-like material 2...Carbon particle coating layer 3...Pacific electrolyte paste 4...Aluminum foil patent applicant Jack Kenneth Ibbott Agent Patent Attorney - Shikikenll1lt" 1 Figure 2

Claims (1)

[Claims] (A coating layer containing fine carbon particles at a high density is formed on one side of a sheet-like material having ion permeability, and an electrolyte paste is applied on the other side of the sheet-like material. A sheet-shaped battery characterized in that it is formed by adhering a foil or fine powder made of aluminum or zinc through an interlayer.(2) A sheet-shaped battery characterized in that the sheet-like object is formed by using a fiber assembly. The sheet battery according to item 1.