Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Tape or flexible-type cell including tape fuel cells or...
Patent
1984-11-07
1986-09-30
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Tape or flexible-type cell including tape fuel cells or...
429162, 296234, H01M 606, H01M 200
Patent
active
046146954
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a battery and a method for producing the same, said battery having a positive pole made of carbon and a negative pole made of metal such as zinc and aluminum. In the conventional battery of this kind, the positive pole is a carbon rod or carbon plate and a mix impregnated with an electrolyte such as ammonium chloride is hermetically sealed in a zinc can or plate. Such a battery can be produced at a low cost and is extremely economical, but its application is limited due to its comparatively large volume.
The battery of this invention is entirely different from the conventional ones, although it is similar in that the positive pole is made of carbon and the negative pole is made of zinc or aluminum. It is very thin and can be cut or formed into any shape, e.g., cylinder, that fits a variety of applications. It is an object of this invention to provide such a battery and a method for producing the same in an extremely easy way.
SUMMARY OF THE INVENTION
The battery of this invention is made up of a positive pole made of sheeting densely filled with carbon fiber or fine carbon particles, a negative pole made of aluminum, zinc, or other metal foil, or fine metal powder in the form of a layer, and an electrolyte in the form of sheet interposed between the positive pole and negative pole.
The sheeting that forms the positive pole is fibrous paper densely filled with conductive carbon particles (e.g., black carbon paper), or fabric formed by interlacing carbon fiber. The positive pole can also be formed by applying a liquid containing a large quantity of carbon particles to one side of an ion-permeable sheet material. The negative pole is usually made of aluminum or zinc or other metal foil for economical reasons, but it can also be made of fine metal powder.
An electrolyte is interposed between the positive pole and negative pole. The electrolyte is selected from a variety of easy-to-ionize substances. A preferred example is a semisolid paste that bonds the sheeting and the metal foil together. For economical reasons, the paste may be a starch paste such as used for bonding paper in deskwork. If necessary, porous thin paper impregnated with the adherent electrolyte may be interposed between the sheeting that forms the positive pole and the metal foil that forms the negative pole. The thin paper serves as a separator that prevents the carbon fiber or carbon particles on the sheeting from coming into direct contact with the metal foil. In the case where the positive pole is formed by applying carbon particles to one side of ion-permeable paper or sheeting, the metal foil forming the negative pole can be bonded directly to the other side of the paper or sheeting with the electrolytic paste, because the paper or sheeting itself functions as a separator.
According to the method of this invention, the battery of this invention is produced by integrally bonding a metal foil (e.g., aluminum or zinc foil) to either side of a sheet material densely filled with carbon fiber or fine carbon particles, by means of a solid or semisolid electrolyte. The sheet material and metal foil are fed continuously. The resulting product is cut into desired dimensions and configuration. The extremely thin battery thus produced generates a constant voltage. The current (or capacity) of the battery is proportional to the area of the battery. In order to obtain a comparatively high capacity, the battery may be rolled into a cylindrical form.
These and other objects and advantages of the invention may be readily ascertained by referring to the following description and appended drawings in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a battery in the form of a comparatively wide sheet according to the invention, with the thickness shown enlarged.
FIG. 2 is a perspective view of a circular battery cut out of the sheet battery as shown in FIG. 1.
FIG. 3 is a perspective view of a cylindrical battery made by rolling the sheet battery as shown in FIG. 1.
REFERENCES:
patent: 282784 (1883-08-01), Schlosser
patent: 2666802 (1954-01-01), Wodring et al.
patent: 2762858 (1956-09-01), Wood
patent: 3314820 (1967-04-01), Smith
patent: 3485677 (1969-12-01), Balaguer
patent: 3617387 (1971-11-01), Grulke et al.
Fanuc Ltd.
Walton Donald L.
LandOfFree
Battery and method of producing same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Battery and method of producing same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery and method of producing same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-984528