JPH0945314A - Manufacturing device of alkaline metal electrode - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent alkaline metal such as metallic lithium from sticking to a pressing piece and a pressure receiving piece by preventing the pressing piece from being flawed by a current collecting body in a device to manufacture an alkaline metal electrode by pressurizing the current collecting body and the alkaline metal such as metallic lithium arranged between the pressing piece and the pressure receiving piece. SOLUTION: Synthetic resin foil 5 for a pressing piece is made to travel along a surface of a pressing piece 3 with which metallic lithium 1 or a current collecting body 2 contacts, and synthetic resin foil 6 for a pressure receiving piece is made to travel along a surface of a pressure receiving piece 4 with which the metallic lithium 1 contacts. The metallic lithium 1 and the current collecting body 2 are pressurized through the synthetic resin foil 5 for a pressing piece and the synthetic resin foil 6 for a pressure receiving piece.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing an alkali metal electrode such as a lithium electrode, and more specifically, to prevent the alkali metal from adhering to a pressure piece and a pressure receiving piece for pressurizing the alkali metal. The present invention relates to an apparatus for producing an alkali metal electrode that can be manufactured.

[0002]

2. Description of the Related Art As an alkali metal electrode manufacturing apparatus for manufacturing an alkali metal electrode by embedding a current collector in an alkali metal such as metallic lithium, there is a device described in JP-B-55-41841.

According to the above-mentioned publication, a highly malleable metal such as metallic lithium and a copper grid are continuously passed together with an endless plastic belt between a set of rollers arranged at a distance from each other to form a roller. This is to prevent the metal from adhering.

[0004]

In the above-mentioned alkali metal electrode manufacturing apparatus, since a highly malleable metal such as metallic lithium and a copper grid are pressed by a roller group through an endless plastic belt, The highly malleable metal can be crimped onto the copper grid, but by repeatedly using the endless plastic belt, the highly malleable metal and the copper grid can be attached through the scratches or the endless plastic belt attached to it. When pressure is applied, a highly malleable metal may adhere to the scratches attached to it, which may cause unevenness on the surface of the alkali metal electrode.Alkali metal electrode using a highly malleable metal such as thin metal lithium There was a difficulty in applying it to the manufacture of.

The present invention has been made in view of the above-described apparatus for producing an alkali metal electrode, and produces an alkali metal electrode suitable for producing an alkali metal electrode using an alkali metal such as thin metal lithium. The purpose is to provide a device.

[0006]

That is, the present invention relates to an alkali metal electrode which comprises a pressing piece and a pressure receiving piece, and which pressurizes an alkali metal and a current collector arranged between the pieces to produce an alkali metal electrode. In the manufacturing apparatus, a synthetic resin foil running portion for the pressing piece for running the synthetic resin foil for the pressing piece along the surface of the pressing piece with which the alkali metal or the current collector comes in contact is provided, and the pressure receiving piece with which the alkali metal comes into contact. A synthetic resin foil running portion for a pressure receiving piece for running the synthetic resin foil for a pressure receiving piece along the surface of the pressure sensitive piece is provided, and a current collector and an alkali are placed on the synthetic resin foil for the pressure receiving piece between the pressing piece and the pressure receiving piece. A metal is arranged, and the current collector and the alkali metal are pressed by the pressing piece through the synthetic resin foil for the pressing piece to form an alkali metal electrode.

Further, in the above-mentioned alkali metal electrode manufacturing apparatus of the present invention, the alkali metal electrode moves a new portion of the synthetic resin foil for the pressure receiving piece along the surface of the pressure receiving piece by the running portion of the synthetic resin foil for the pressure receiving piece. The pressing piece synthetic resin foil running portion moves a new portion of the pressing piece synthetic resin foil along the surface of the pressing piece.

Further, the present invention is characterized in that, in the above-mentioned apparatus for producing an alkali metal electrode, the alkali metal electrode is a lithium electrode.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a view showing a state before the operation of the apparatus for producing an alkali metal electrode according to the present invention, in which a pressing piece 3 and a pressure receiving piece 4 are provided.
So that the surface of the pressing piece 3 in contact with the alkali metal is made to run the synthetic resin foil 5 for pressing piece, and the surface of the pressure receiving piece 4 in contact with the alkali metal is made to run the synthetic resin foil 6 for pressure receiving piece. FIG. 3 is a diagram showing a state in which metallic lithium 1 as an alkali metal and a current collector 2 are arranged on the pressure-sensitive piece synthetic resin foil 6.

The pressing piece synthetic resin foil 5 is combined with an original winding 9 around which it is wound and a winding device 7 for running the winding 9 along the surface of the pressing piece 3 in contact with the alkali metal. The synthetic resin foil 6 for the pressure-receiving piece, which constitutes a resin foil running portion, is the original roll 1 around which the synthetic resin foil 6 is wound.
0 and a winding device 8 for running the same along the surface of the pressure-receiving piece 4 in contact with the alkali metal, which constitutes a synthetic resin foil running portion for the pressure-receiving piece.

The pressing piece 3 is constructed to move up and down by a hydraulic cylinder 11.

FIG. 2 is a diagram showing the operating state of the alkali metal electrode manufacturing apparatus of the present invention, in which the hydraulic cylinder 11 is actuated to lower the pressing piece 3 onto the pressure receiving piece 4 so that the metal serving as the alkali metal. It is a figure which shows the state which is pressing the lithium 1 and the collector 2.

FIG. 3 is a diagram showing a state at the end of operation of the alkali metal electrode manufacturing apparatus of the present invention.
Is operated to raise the pressing piece 3, and the synthetic resin foil running portion for the pressure receiving piece is operated to move a new portion of the synthetic resin foil 6 for the pressure receiving piece along the surface of the pressure receiving piece 4 to produce the alkali. The figure which shows the state which took out the lithium electrode 12 as a metal electrode, actuated the synthetic resin foil running part for pressing pieces with it, and moved the new part of the synthetic resin foil 5 for pressing pieces along the surface of the pressing piece 3. Is.

According to the present invention, the current collector 2 disposed on the pressure-sensitive piece synthetic resin foil 6 and the metal lithium 1 as the alkali metal are transferred between the pressure piece 3 and the pressure-receiving piece 4 to be used for the pressure piece. Since pressure is applied by the pressing piece 3 through the synthetic resin foil 5, metallic lithium does not adhere to the surfaces of the pressing piece 3 and the pressure receiving piece 4, so that the thin metallic lithium 1 and the current collector 2 are efficiently added. The lithium electrode 12 can be manufactured by pressing.

Further, according to the present invention, every time one lithium electrode is manufactured by the synthetic resin foil running portion for the pressure receiving piece and the synthetic resin foil running portion for the pressing piece, a new portion of the synthetic resin foil 6 for the pressure receiving piece is pressed against the new portion. Since the new portion of the strip synthetic resin foil 5 is made to run on the surfaces of the pressure receiving piece 4 and the pressing piece 3, even if each foil is scratched by the current collector 2, the production of the lithium electrode is hindered. It won't come.

In the above embodiment, the metallic lithium 1
How to position the current collector 2 and the current collector 2 on the pressure-sensitive piece synthetic resin foil 6 is not particularly described, but transfer between the pressing piece 3 and the pressure-receiving piece 4 from the direction perpendicular to the paper surface. Moreover, it can be positioned by being placed on the pressure-sensitive piece synthetic resin foil 6 in advance and transferred between the pressing piece 3 and the pressure-receiving piece 4.

In the above-described embodiment, the case where a lithium electrode is manufactured as an alkali metal electrode has been described. However, other alkali metal electrodes other than metal lithium and other metal electrodes having the same properties as alkali metal electrodes can be used. It can also be used in manufacturing.

[0019]

Example Using the above-described alkali metal electrode manufacturing apparatus, the thickness of metallic lithium 1 is 1 mm and the thickness is 0.3 mm.
When a lithium electrode was manufactured by pressurizing the current collector 2 of 1., the pressurizing pressure was 5880 KPa to 7840 KPa.
Even if the pressing piece synthetic resin foil 5 and the pressure receiving piece synthetic resin foil 6 having a thickness of 0.03 mm are used, the pressing piece 3 is scratched by the current collector 2 by the pressing piece synthetic resin foil 5. It has been found that it is possible to prevent metallic lithium from adhering to the pressing piece 3, and the synthetic resin foil 6 for the pressure receiving piece can prevent metallic lithium from adhering to the pressure receiving piece 4.

[0020]

As described above, according to the present invention, it is possible to prevent the pressing piece 3 from being scratched by the current collector 2 and to prevent metallic lithium from adhering to the pressing piece 3 and the pressure receiving piece 4, which is particularly thin. It can be said that it is suitable for manufacturing an alkali metal electrode such as a lithium electrode.

[Brief description of drawings]

FIG. 1 is a diagram showing a state before the start of operation of an alkali metal electrode manufacturing apparatus of the present invention.

FIG. 2 is a diagram showing a state during operation of the alkali metal electrode manufacturing apparatus of the present invention.

FIG. 3 is a diagram showing a state at the end of operation of the alkali metal electrode manufacturing apparatus of the present invention.

[Explanation of symbols]

 1 Metal lithium 2 Current collector 3 Pressing piece 4 Pressure receiving piece 5 Synthetic resin foil for pressing piece 6 Synthetic resin foil for pressure receiving piece

Claims (3)

[Claims] 1. An alkali metal electrode production apparatus comprising a pressing piece and a pressure receiving piece, wherein an alkali metal electrode is manufactured by pressurizing an alkali metal and a current collector arranged between the pieces. The synthetic resin foil for the pressing piece for running the synthetic resin foil for the pressing piece along the surface of the pressing piece that comes into contact with, and the synthetic resin for the pressure receiving piece along the surface of the pressure receiving piece with which the alkali metal contacts A synthetic resin foil running portion for the pressure receiving piece for running the foil is provided, and a current collector and an alkali metal are arranged on the synthetic resin foil for the pressure receiving piece between the pressing piece and the pressure receiving piece. An alkali metal electrode manufacturing apparatus, wherein an alkali metal electrode is obtained by pressing an alkali metal with a pressing piece through a synthetic resin foil for a pressing piece. 2. The alkali metal electrode manufacturing apparatus according to claim 1, wherein the alkali metal electrode moves a new portion of the synthetic resin foil for the pressure receiving piece along the surface of the pressure receiving piece by the synthetic resin foil running portion for the pressure receiving piece. A device for manufacturing an alkali metal electrode, characterized in that a new portion of the synthetic resin foil for a pressing piece is moved along the surface of the pressing piece by the pressing piece synthetic resin foil running section. 3. The apparatus for producing an alkali metal electrode according to claim 1, wherein the alkali metal electrode is a lithium electrode.