JPS60216443A - Battery - Google Patents

Abstract

PURPOSE:To make a battery lightweight and small-sized while making a collector unrequired by directly forming an organic polymer such as polyacetylene or the like inside an armoring case serving as well as an outer terminal for constituting an organic polymer electrode. CONSTITUTION:While making the stainless plates 1 and 2 as an armoring case serving as well as an outer terminal to be substrates, a solution AlET3/Ti(OBU)4 as a catalytic solution is applied to their one side for being put into a reaction tube and acetylene gas is introduced to make to perform polymerization reaction on the catalyzer surface in order to directly form the positive and negative poles 3 and 4 consisting of polyacetylene or the like on the insides of the plates 1 and 2. Then, a battery using an organic polymer as an electrode is manufactured by assembling said positive and negative poles while holding a polypropylene-made separator 5 impregnated with a non-aqueous electrolyte between while airtightly sealing up. Accordingly, a collector is unrequired while reducing the thickness of the constituting members thus enabling to make a battery to be small-sized and lightweight.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an improvement in a battery using an a-containing polymer such as polyacetylene or boria-2-nylene as at least one electrode.

(b) Prior art In recent years, batteries using organic polymers such as polyacetylene and poly7-ethylene as electrodes have been proposed (Japanese Patent Laid-Open No. 56-1
(For details, see Publication No. 36469). This battery has attracted particular attention because of its advantages of being lightweight and having a high energy density of 1ft.

By the way, as an organic polymer electrode, a film-like mJjt aggregate is generally prepared, and this is cut into a predetermined shape to make an electrode, and when assembling a battery, a current collector is attached to the electrode and placed inside the battery container. Then connect one end of the current collector to the outer case that also serves as an external terminal, or connect the outer end of the current collector that passes through the battery container (if the battery container is made of an insulating material). was.

In order to obtain the sufficient current collecting effect of the organic polymer electrode, it is necessary to incorporate the current collector into the organic polymer electrode under pressure. Must be equipped.

Inevitably, the thickness of the members constituting the battery container increases.

As a result, there is a problem in that the advantages of using it for organic polymerization blackout ffl', that is, the advantages of weight reduction and size reduction, are inhibited.

(/1 Purpose of the invention The present invention eliminates the need for an organic polymer RE electrode current collector.

Furthermore, it is an object of the present invention to make it possible to reduce the thickness t of the members constituting the battery container, thereby reducing the weight and size of the battery, and to provide a battery that has a current collecting effect equal to or higher than that when using a current collector. shall be.

B) Structure of the Invention The present invention uses an organic polymer as at least one electrode, and the organic polymer electrode is formed directly on the inner surface of an exterior case that also serves as an external terminal of the electrode. The battery is characterized by:

(e) Examples Embodiments of the present invention will be described below with reference to the drawings.

+11 (21 is a positive and negative external case that constitutes the battery container, and is made of stainless steel plate and also serves as a positive and negative external terminal. (31 (4) is the upper and negative external case 111, respectively)
(2) Positive and negative electrodes made of polyacetylene formed directly on the inner surface.

The polyacetylene electrode was directly formed on the inner surface of the outer case by the following method. In other words, it is a stainless steel plate used as an exterior case.

One side of this substrate was coated with 8ITI/Ti as a catalyst solution.
(OBU)4 solution t-apply. This is then placed in a glass reaction tube, and acetylene gas is introduced into the reaction tube to initiate a polymerization reaction on the catalyst surface. When the polyacetylene reaches a predetermined thickness, the polymerization reaction is stopped, and the polyacetylene is taken out from the first reaction tube, thoroughly washed with running water, the remaining catalyst is removed, and then dried in argon.

The thickness J) of the outer case is 0.05' Mil11.
Polyacetylene′#! The thickness of the pole is 0.10 mm.

(5) is a polypropylene separator with a thickness of 40.05 mm, and this separator is made of a non-aqueous solution in which lyticum perchlorate is dissolved in a mixed solvent of propylene carbonate and dimethoxyethane. is impregnated.

(6) is an insulating backing that electrically insulates between the positive and negative electrode outer cases, and is air-liquid-tightly sealed from the opposing case by a bonding agent (7). The battery thickness was approximately 0.65 thickness.

(f) Effects of the Invention According to the battery of the present invention, since the organic polymer electrode is formed of an organic polymer electrode formed directly inward of the outer case which also serves as an external terminal, the following effects can be obtained.

That is, (1) since a current collector is not required, it is possible to reduce the weight and size, and is economically superior.

■Although a current collector is not required, the organic polymer electrode is formed directly on the outer case, which also serves as an external terminal, so the bonding force between the two is strong, and a good current collecting effect can be obtained, and a current collector can be used. In some cases, it is necessary to maintain the entire pressurized state of the current collector all-organic polymer electrode, and in order to make the outer case withstand the pressure, it is necessary to increase the thickness of the outer case. Since the battery of the present invention can have a thin outer case, it can be made lighter and smaller.

■In the case of creating a separate organic polymer electrode as in the past, a substrate T is required for electrode formation, and complicated processes such as cutting into a predetermined shape are required. Since it uses itself as a substrate for the electrode creation angle, the electrode creation process is simplified.

In addition, although polyacetylene was exemplified as the organic polymer in the examples of the present invention, other organic polymers such as polyphenylene can also be applied.

[Brief explanation of drawings]

The drawing shows a longitudinal cross-sectional view of the battery of the invention. +11. (21...Positive, negative electrode outer case, (31,
(41...Positive and negative electrodes made of organic polymers, (51-,
Separator. 161...Insulating backing. Applicant Sanyo Electric Co., Ltd. Agent Patent Attorney Shizuo Sano

Claims (1)

[Claims] ■ An organic polymer is used as at least one electrode, and the polymer electrode is made of an organic polymer formed directly on the inner surface of the outer case which also serves as the external terminal of the electrode. battery.