JPH06140028A - Negative electrode current collector and manufacture thereof - Google Patents
Negative electrode current collector and manufacture thereofInfo
- Publication number
- JPH06140028A JPH06140028A JP31408392A JP31408392A JPH06140028A JP H06140028 A JPH06140028 A JP H06140028A JP 31408392 A JP31408392 A JP 31408392A JP 31408392 A JP31408392 A JP 31408392A JP H06140028 A JPH06140028 A JP H06140028A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- negative electrode
- electrode current
- lithium
- lithium alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y02E60/12—
Landscapes
- Cell Electrode Carriers And Collectors (AREA)
- Primary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エレクトロニクス機
器、玩具、アクセサリ−などの分野に使われる金属リチ
ウムを負極活物質とする負極集電体及びその製造方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a negative electrode current collector using metallic lithium as a negative electrode active material and a method for producing the same, which is used in fields such as electronic equipment, toys and accessories.
【０００２】[0002]
【従来の技術】従来の薄形電池に用いられた負極は、負
極集電体の周縁に接着剤を接着した後、接着剤の内側に
金属リチウムを配置し圧延圧着し作製していた。また正
極集電体の周縁に接着剤を接着した後、アンダ−コ−
ト、正極活物質、電解質などを配置し正極を作製してい
た。このように負極及び正極の両方に接着剤を配置し
て、これらを互いに重ね合わせて接着し電池内を密閉し
ていた。しかしながらこのような方法では正極活物質及
び電解質を電子線などで硬化させる時に、接着剤が劣化
し電池内の気密性及び接着強度が得られず短寿命であっ
た。また電池を折り曲げたりした場合、折り曲げ部分の
電池要素の接触が悪くなり電池特性が低下することがあ
った。さらに金属リチウムの形状が大きい為に所定の箇
所に配置する時、位置がずれたりしわが入ったりした。2. Description of the Related Art A negative electrode used in a conventional thin battery is manufactured by bonding an adhesive to the periphery of a negative electrode current collector, arranging metallic lithium inside the adhesive and rolling and pressure bonding. Also, after bonding an adhesive to the periphery of the positive electrode current collector,
A positive electrode was prepared by arranging a cathode, a positive electrode active material, an electrolyte and the like. In this way, the adhesive was placed on both the negative electrode and the positive electrode, and these were superposed on each other and bonded to seal the inside of the battery. However, in such a method, when the positive electrode active material and the electrolyte are cured with an electron beam or the like, the adhesive deteriorates and the airtightness and the adhesive strength in the battery cannot be obtained, resulting in a short life. Further, when the battery is bent, the contact of the battery element at the bent portion may be deteriorated and the battery characteristics may be deteriorated. Furthermore, since the shape of metallic lithium is large, when it was placed in a predetermined place, the position was misaligned or wrinkled.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みてなされたものであって、その目的とするところは
金属リチウムの配置の簡易化と、接着剤の特性劣化防止
と、電池要素の密着性の向上などを計った負極集電体と
その製造方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to simplify the arrangement of metallic lithium, prevent the deterioration of the characteristics of the adhesive, and battery element. Another object of the present invention is to provide a negative electrode current collector having improved adhesion and a method for producing the same.
【０００４】[0004]
【課題を解決するための手段】本発明は上記目的を達成
するもので、正極集電体と負極集電体の間に正極活物
質、電解質、負極活物質などの電池要素を配置する薄形
電池に用いられる負極集電体において、金属リチウム又
はリチウム合金が一定パタ−ンで複数片、負極集電体面
に配置されていること、前記複数片の金属リチウムが互
いに一定間隔をもって離れていること、前記複数片の金
属リチウム又はリチウム合金の端部が互いに連結されて
いること、前記複数片の金属リチウム又はリチウム合金
が負極集電体面に接着された矩形状に穴が設けられた接
着剤の穴内に配置されること、及び正極集電体と負極集
電体の間に正極活物質、電解質、負極活物質などの電池
要素を配置する薄形電池に用いられる負極集電体の製造
方法において、銅箔、ステンレス箔、ニッケル箔など又
はそれらの金属を被覆した樹脂フィルムなどからなる負
極集電体面上に金属リチウム又はリチウム合金を一定パ
タ−ンで複数片配置すること、前記金属リチウム又はリ
チウム合金が別工程で定型にカットされた後、負極集電
体面に配置される又は負極集電体面に接着された接着剤
の矩形状穴に配置されること、前記金属リチウム又はリ
チウム合金が別工程で定型にカットされた後、負極集電
体面上に金属リチウム又はリチウム合金の周縁端部が互
いに接触するように配置されること、前記金属リチウム
又はリチウム合金が配置と同時又は後工程で負極集電体
面上に圧着及び又は圧延ロ−ル、打撃などで圧着及び又
は圧延圧着されること、前記金属リチウム又はリチウム
合金がハンマ−プレスなどの打撃により負極集電体面で
圧着と切断が行われることなどを特徴とし、これにより
上述の問題点を解決するものである。Means for Solving the Problems The present invention achieves the above object and is a thin type in which a battery element such as a positive electrode active material, an electrolyte or a negative electrode active material is arranged between a positive electrode current collector and a negative electrode current collector. In the negative electrode current collector used for the battery, a plurality of pieces of metallic lithium or a lithium alloy are arranged in a fixed pattern on the surface of the negative electrode current collector, and the plurality of pieces of metallic lithium are separated from each other at a constant interval. The end portions of the plurality of pieces of metallic lithium or lithium alloy are connected to each other, and the plurality of pieces of metallic lithium or lithium alloy of the adhesive provided with a rectangular hole adhered to the negative electrode current collector surface. In a method for manufacturing a negative electrode current collector used in a thin battery in which a battery element such as a positive electrode active material, an electrolyte, or a negative electrode active material is arranged between the positive electrode current collector and the negative electrode current collector. ,Copper foil Placing a plurality of pieces of metallic lithium or lithium alloy in a fixed pattern on the surface of the negative electrode current collector made of a resin film coated with stainless steel foil, nickel foil or the like or a metal thereof, the metallic lithium or lithium alloy is a separate step. After being cut into a standard shape, it is placed on the negative electrode current collector surface or placed in a rectangular hole of the adhesive adhered to the negative electrode current collector surface, and the metallic lithium or lithium alloy is cut into a standard shape in a separate step. After that, the peripheral edges of the metallic lithium or lithium alloy are arranged so as to be in contact with each other on the negative electrode current collector surface, and the metallic lithium or lithium alloy is arranged on the negative electrode current collector surface at the same time as or in a later step. Crimping and / or rolling, crimping and / or rolling by hitting, and the metallic lithium or lithium alloy being hit by hammering or the like. Characterized and that the crimping and cutting the negative electrode collector body surface is carried out, thereby solves the above problems.
【０００５】[0005]
【作用】請求項１により連続した負極集電体を作製で
き、任意の位置で切断することで多数の金属リチウム又
はリチウム合金付き負極集電体を作製でき、生産性を高
める。請求項２により分断することで、金属リチウム又
はリチウム合金のない周縁部を封口部（接着剤の配置箇
所）とすることができる。請求項３により負極集電体が
例えば数十ｃｍの大きさとなる場合でも金属リチウム又
はリチウム合金（例えば箔等では大きくなれば、柔軟性
のため取扱が難しい。）を配置でき、生産性が高まる。
また同じ装置で金属リチウム又はリチウム合金のパタ−
ンを変更するだけで各種形状の金属リチウム又はリチウ
ム合金を配置した負極集電体が得られ、設備投資及び維
持管理費用が低減される。請求項４により隣接する穴間
の接着剤を切断することで、容易に金属リチウム又はリ
チウム合金付き負極集電体が得られ、他方の正極集電体
と互いに接着するだけで薄形電池が出来上がり、接着剤
の変質のない信頼性の高い薄形電池となる。請求項５乃
至８により上記作用を有する負極集電体を製造すること
ができる。即ち位置精度が±０．２ｍｍ以内で集電体と
金属リチウム又はリチウム合金との間に気泡がはいら
ず、内部短絡及び気密不良がなく内部抵抗が小さく膨れ
のない薄形電池を製造出来る。According to the first aspect, a continuous negative electrode current collector can be produced, and by cutting it at an arbitrary position, a large number of metallic lithium or lithium alloy negative electrode current collectors can be produced, thereby improving productivity. By dividing according to the second aspect, it is possible to use the peripheral portion without metallic lithium or lithium alloy as the sealing portion (placement of the adhesive). According to claim 3, even when the negative electrode current collector has a size of, for example, several tens of cm, metallic lithium or a lithium alloy (for example, if it is large in a foil or the like, it is difficult to handle due to its flexibility) can be arranged, and productivity is increased. .
Also, with the same device, a pattern of metallic lithium or lithium alloy
The negative electrode current collector in which various shapes of metallic lithium or lithium alloy are arranged can be obtained by simply changing the battery, and the capital investment and the maintenance cost can be reduced. By cutting the adhesive between adjacent holes according to claim 4, a negative electrode current collector with metallic lithium or a lithium alloy can be easily obtained, and a thin battery can be completed by simply adhering it to the other positive electrode current collector. , It becomes a highly reliable thin battery without deterioration of the adhesive. According to claims 5 to 8, the negative electrode current collector having the above action can be manufactured. That is, it is possible to manufacture a thin battery having a positional accuracy of ± 0.2 mm or less, no bubbles between the current collector and the metallic lithium or lithium alloy, no internal short circuit and poor airtightness, and a small internal resistance and no swelling.
【０００６】[0006]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。 （実施例１）図１は本発明に係わる金属リチウム箔付負
極集電体の完成状態平面図を示す。即ち負極集電体１
（ステンレス箔、アルミニウム箔又は樹脂フィルム上に
それらの金属を被覆したものなど）の上に一定パタ−ン
で金属リチウム箔２を転写した状態を示す。この場合複
数片の金属リチウム箔２が互いに一定間隔（約７ｍｍ）
で配置されたもので、図２は一定パタ−ンで金属リチウ
ム箔３が複数片端部が連結されて配置されたものであ
る。図３には図１の一連の負極集電体の長さ方向の断面
図を示す。このような金属リチウムの配置は図４に示す
ような方法で生産される。即ち伸縮性の乏しい又は伸縮
しないサポ−トフィルム４に保持された一連の金属リチ
ウム箔５（なお幅については生産性を高めるため配置後
の幅と同一とした。）を巻きだした所で一定寸法（な
お、この場合は長さ方向について切断する。幅方向はあ
らかじめ一定寸法となっている。）に切断（切断部６；
切断装置は図中に記載されていないがダイロ−ルなどで
ハ−フカットする方法が適している。）される。該金属
リチウム５付きサポ−トフィルム４は上下可動の加圧ロ
−ル７に送られている。該加圧ロ−ル７の下部に金属リ
チウム５が送られてきた時（この時、負極集電体８も送
られてくる。）に、該加圧ロ−ル７が降下し金属リチウ
ム５の下面が負極集電体面に接触し、継続した負極集電
体８の送りにより金属リチウム５は加圧ロ−ル７の先端
でサポ−トフィルム４から離れ負極集電体面に圧着され
ていく。圧着終了と同時に加圧ロ−ル７は上昇する。な
お加圧ロ−ル７の先端から離れた金属リチウム５が浮き
上がらないようにサポ−トし且つ加圧する支持ロ−ル９
が加圧ロ−ル７の後部にあって常に集電体面上にあった
方が金属リチウム５の圧着が完全となる。Embodiments of the present invention will be described below with reference to the drawings. (Example 1) FIG. 1 is a plan view showing a completed state of a negative electrode current collector with a metal lithium foil according to the present invention. That is, the negative electrode current collector 1
A state in which the metallic lithium foil 2 is transferred with a constant pattern onto (stainless steel foil, aluminum foil, or a resin film coated with those metals) is shown. In this case, a plurality of pieces of metallic lithium foil 2 are arranged at regular intervals (about 7 mm).
In FIG. 2, a plurality of metallic lithium foils 3 are arranged such that one end portions of the metallic lithium foils 3 are connected in a fixed pattern. FIG. 3 shows a cross-sectional view of the series of negative electrode current collectors of FIG. 1 in the longitudinal direction. Such an arrangement of metallic lithium is produced by the method shown in FIG. That is, a series of metallic lithium foils 5 retained on the support film 4 having poor or no stretchability (the width is the same as the width after the arrangement for improving productivity) are unwound. (Note that in this case, cutting is performed in the length direction. The width direction has a predetermined size in advance.) (Cutting portion 6;
Although the cutting device is not shown in the figure, a method of half-cutting with a die roll is suitable. ) Will be done. The support film 4 with the metallic lithium 5 is sent to a pressure roll 7 which is vertically movable. When the metallic lithium 5 is sent to the lower part of the pressure roll 7 (at this time, the negative electrode current collector 8 is also sent), the pressure roll 7 descends to drop the metallic lithium 5 The lower surface of the electrode contacts the surface of the negative electrode current collector, and the continuous feeding of the negative electrode current collector 8 separates the metallic lithium 5 from the support film 4 at the tip of the pressure roll 7 and press-bonds it to the surface of the negative electrode current collector. Simultaneously with the completion of the pressure bonding, the pressure roll 7 rises. A support roll 9 is provided to support and press the metal lithium 5 away from the tip of the pressure roll 7 so that the metal lithium 5 does not float up.
When the pressure roller 7 is on the rear portion of the pressure roller 7 and is always on the surface of the current collector, the pressure bonding of the metal lithium 5 is completed.
【０００７】（実施例２）図５は一連の他の金属リチウ
ム付き集電体作製方法を示す断面図である。あらかじめ
金属集電体１の上に一定パタ−ンの矩形状の穴を有する
接着剤１０を接着した。次に金属集電体１の矩形穴面上
に図５に示すようにサポ−トフィルム１１で金属リチウ
ム箔１２を供給すると共に、サポ−トフィルム１１上方
からハンマ−プレス１３などの方法で打撃を与え金属リ
チウム箔１２を該矩形穴面上に転写する。この時、サポ
−トフィルム１１上で連続していた金属リチウム箔１２
が打撃により角部で定尺寸法に切断される。なおこの切
断は接着剤角部と打撃装置との間での金属リチウムの位
相ズレによるものである。金属リチウム箔１２が転写さ
れた集電体の移動（なおこの移動は間欠であっても良
く、また常に動いていてもよい。）に伴い金属リチウム
１２付きサポ−トフィルム１１も移動し、次の矩形穴に
上記と同様な加工がなされる。(Embodiment 2) FIG. 5 is a cross-sectional view showing a series of other methods for producing a current collector with metallic lithium. An adhesive 10 having a rectangular hole of a fixed pattern was adhered onto the metal current collector 1 in advance. Next, as shown in FIG. 5, the metallic lithium foil 12 is supplied to the rectangular hole surface of the metal current collector 1 with the support film 11, and a hit is given from above the support film 11 by a hammer press 13 or the like. The metallic lithium foil 12 is transferred onto the rectangular hole surface. At this time, the metallic lithium foil 12 which was continuous on the support film 11
Is cut into a standard size at the corner by hitting. This cutting is due to the phase shift of metallic lithium between the corners of the adhesive and the striking device. With the movement of the current collector to which the metallic lithium foil 12 is transferred (this movement may be intermittent or may be constantly moving), the support film 11 with the metallic lithium 12 also moves, and The same processing as above is performed on the rectangular hole.
【０００８】（実施例３）複数片のリチウム合金が転写
され、それぞれの端部が連結された場合について説明す
る。前述した図２について、実施例１で説明（図４参
照）したようにリチウム合金（約２％のアルミニウムを
含有させた。）３を負極集電体１上に６片転写した後、
リチウム合金３面全体を加圧ロ−ルにて加圧すること
で、それぞれのリチウム合金の端部同士を結合させ、全
体として１枚のリチウム合金箔とする。このことで従来
大きなリチウム合金箔を転写することが難しかったが、
容易となった。(Embodiment 3) A case will be described in which a plurality of pieces of lithium alloy are transferred and the respective ends are connected. With reference to FIG. 2 described above, as described in Example 1 (see FIG. 4), after transferring 6 pieces of the lithium alloy (containing approximately 2% of aluminum) 3 onto the negative electrode current collector 1,
By pressing the entire three surfaces of the lithium alloy with a pressure roll, the ends of the lithium alloys are bonded to each other to form one lithium alloy foil as a whole. This made it difficult to transfer a large lithium alloy foil.
It became easier.
【０００９】以上のような負極集電体及び製造方法によ
り、従来正極及び負極の集電体にそれぞれ接着剤を設
け、電池に組み立てる時にそれらを重ね合わせていた
が、正極集電体上の接着剤は電子線照射による劣化によ
り電池にした場合、気密不良が発生したが本発明では皆
無となった。さらに金属リチウム（又はリチウム合金）
を配置する時、従来ではその位置精度を±０．３ｍｍ以
内に収めることができず、電池を組み立てる場合接着剤
上に金属リチウム（又はリチウム合金）が乗り上げ気密
不良が約４％発生していたが、本発明では位置精度を±
０．２ｍｍ以内に収めることができ不良は皆無となっ
た。また金属リチウム（又はリチウム合金）転写速度も
約０．９秒／枚となり、約６．７倍になった。また金属
リチウム（又はリチウム合金）の密着性も従来に比べて
約１３％（従来は集電体と金属リチウム箔との間に気泡
が残存し約１３％の不良が発生した。）向上した。According to the negative electrode current collector and the manufacturing method described above, conventionally, an adhesive was provided on each of the positive electrode and negative electrode current collectors, and they were overlapped when assembled into a battery. When the agent was made into a battery due to deterioration due to electron beam irradiation, poor airtightness occurred, but it was completely absent in the present invention. Further metallic lithium (or lithium alloy)
In the prior art, the positional accuracy could not be kept within ± 0.3 mm, and when assembling the battery, metallic lithium (or lithium alloy) ran on the adhesive and about 4% of airtightness failure occurred. However, in the present invention, the positional accuracy is ±
It was able to fit within 0.2 mm, and there were no defects. The transfer rate of metallic lithium (or lithium alloy) was about 0.9 seconds / sheet, which was about 6.7 times. Also, the adhesion of metallic lithium (or lithium alloy) was improved by about 13% as compared with the conventional case (conventionally, bubbles were left between the current collector and the metallic lithium foil, causing a defect of about 13%).
【００１０】[0010]
【発明の効果】上述したごとく、本発明は次に記載する
効果を奏する。 （１）圧着性は約１３％向上した。 （２）転写速度が約６．７倍になった。 （３）転写位置精度は±０．２ｍｍ以内である。 （４）大きさが自由に変更出来る。 （５）大きな金属リチウム箔（又はリチウム合金箔）の
配置も可能となる。 （６）接着剤の劣化がなくなった。 （７）金属リチウム箔（又はリチウム合金箔）の幅方向
が所定幅とすることで、転写速度を向上させる。 なお本発明においては実施例に示すものに限定されるも
のではなく、各集電体の形状、樹脂フィルム材質・厚
み、金属リチウム箔（又はリチウム合金箔）形状、パタ
−ン形状、リチウム合金組成等々特に限定するものでは
なく、用途に応じて種種変更されるものである。As described above, the present invention has the following effects. (1) The crimpability was improved by about 13%. (2) The transfer speed is increased by about 6.7 times. (3) The transfer position accuracy is within ± 0.2 mm. (4) The size can be changed freely. (5) A large metal lithium foil (or lithium alloy foil) can be arranged. (6) The deterioration of the adhesive has disappeared. (7) The transfer speed is improved by setting the width direction of the metallic lithium foil (or lithium alloy foil) to a predetermined width. The present invention is not limited to those shown in the examples, but the shape of each current collector, the resin film material / thickness, the metallic lithium foil (or lithium alloy foil) shape, the pattern shape, the lithium alloy composition. The present invention is not particularly limited, and may be changed depending on the application.
【図１】本発明に係わる負極集電体の平面図である。FIG. 1 is a plan view of a negative electrode current collector according to the present invention.
【図２】本発明に係わる負極集電体の平面図である。FIG. 2 is a plan view of a negative electrode current collector according to the present invention.
【図３】本発明に係わる金属リチウム箔（又はリチウム
合金箔）を転写した集電体の断面図である。FIG. 3 is a cross-sectional view of a current collector to which a metallic lithium foil (or lithium alloy foil) according to the present invention is transferred.
【図４】本発明に係わる金属リチウム箔（又はリチウム
合金箔）を転写する時の状態断面図である。FIG. 4 is a state cross-sectional view when transferring a metallic lithium foil (or a lithium alloy foil) according to the present invention.
【図５】本発明に係わる金属リチウム箔（又はリチウム
合金箔）を打撃により負極集電体面に転写する時の状態
断面図である。FIG. 5 is a sectional view showing a state in which the metallic lithium foil (or lithium alloy foil) according to the present invention is transferred to the negative electrode current collector surface by hitting.
１、８ 負極集電体 ２、３、５、１２ 金属リチウム箔（又はリチウム合
金箔） ４、１１ サポ−トフィルム ６ 切断部 ７ 加圧ロ−ル ９ 指示ロ−ル １０、１０’ 接着剤 １３ ハンマ−プレス1, 8 Negative electrode current collector 2, 3, 5, 12 Metal lithium foil (or lithium alloy foil) 4, 11 Support film 6 Cutting part 7 Pressure roll 9 Indication roll 10, 10 'Adhesive 13 Hammer press
Claims (9)
質、電解質、負極活物質からなる電池要素を配置する薄
形電池に用いられる負極集電体において、金属リチウム
又はリチウム合金が一定パタ−ンで複数片、負極集電体
面に圧着されていることを特徴とする負極集電体。1. A negative electrode current collector for use in a thin battery, in which a battery element composed of a positive electrode active material, an electrolyte, and a negative electrode active material is disposed between a positive electrode current collector and a negative electrode current collector, wherein metallic lithium or lithium alloy is used. The negative electrode current collector is characterized in that a plurality of pieces are bonded to the surface of the negative electrode current collector with a constant pattern.
合金が、互いに一定間隔をもって離れていることを特徴
とする請求項１記載の負極集電体。2. The negative electrode current collector according to claim 1, wherein the plurality of pieces of metallic lithium or lithium alloy are separated from each other at a constant interval.
合金の端部が、互いに一定パタ−ンで連結されているこ
とを特徴とする請求項１又は２記載の負極集電体。3. The negative electrode current collector according to claim 1, wherein the end portions of the plurality of pieces of metallic lithium or lithium alloy are connected to each other by a constant pattern.
合金が負極集電体面に接着された穴が設けられた接着剤
の穴内に配置されることを特徴とする請求項１又は２記
載の負極集電体。4. The negative electrode current collector according to claim 1, wherein the plurality of pieces of metallic lithium or lithium alloy are arranged in a hole of an adhesive provided with a hole bonded to a negative electrode current collector surface. Electric body.
質、電解質、負極活物質からなる電池要素を配置する薄
形電池に用いられる負極集電体の製造方法において、金
属箔又は金属を被覆した樹脂フィルムからなる負極集電
体面上に金属リチウム又はリチウム合金を一定パタ−ン
で複数片転写することを特徴とする負極集電体の製造方
法。5. A method of manufacturing a negative electrode current collector used in a thin battery, in which a battery element including a positive electrode active material, an electrolyte, and a negative electrode active material is disposed between the positive electrode current collector and the negative electrode current collector, and a metal foil. Alternatively, a method for producing a negative electrode current collector is characterized in that a plurality of pieces of metallic lithium or lithium alloy are transferred on a negative electrode current collector surface made of a resin film coated with a metal by a constant pattern.
工程で定型にカットされた後、負極集電体面に配置され
る又は負極集電体面に接着された接着剤の矩形状穴に配
置されることを特徴とする請求項５記載の負極集電体の
製造方法。6. The lithium metal or lithium alloy is cut into a standard shape in a separate step, and then placed on the negative electrode current collector surface or in a rectangular hole of an adhesive adhered to the negative electrode current collector surface. The method for manufacturing the negative electrode current collector according to claim 5.
工程で定型にカットされた後、負極集電体面上に金属リ
チウムの周縁端部が互いに接触するように配置されるこ
とを特徴とする請求項５記載の負極集電体の製造方法。7. The metal lithium or lithium alloy is cut into a standard shape in a separate step, and then disposed on the surface of the negative electrode current collector such that the peripheral edges of the metal lithium are in contact with each other. 5. The method for producing the negative electrode current collector described in 5.
配置と同時又は後工程で負極集電体面上に圧着及び又は
圧延ロ−ル又は打撃により圧着及び又は圧延圧着される
ことを特徴とする請求項５、６又は７記載の負極集電体
の製造方法。8. The lithium metal or lithium alloy comprises:
The negative electrode current collector according to claim 5, 6 or 7, wherein the negative electrode current collector is pressure-bonded and / or rolled by a rolling roll or hitting on the surface of the negative electrode current collector at the same time as the arrangement or in a subsequent step. Method.
ハンマ−プレスの打撃により負極集電体面で圧着と切断
が行われることを特徴とする請求項８記載の負極集電体
の製造方法。9. The metallic lithium or lithium alloy comprises:
The method for producing a negative electrode current collector according to claim 8, wherein the surface of the negative electrode current collector is pressed and cut by being hit with a hammer press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31408392A JP3528855B2 (en) | 1992-10-28 | 1992-10-28 | Negative electrode current collector and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31408392A JP3528855B2 (en) | 1992-10-28 | 1992-10-28 | Negative electrode current collector and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06140028A true JPH06140028A (en) | 1994-05-20 |
| JP3528855B2 JP3528855B2 (en) | 2004-05-24 |
Family
ID=18049032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31408392A Expired - Fee Related JP3528855B2 (en) | 1992-10-28 | 1992-10-28 | Negative electrode current collector and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3528855B2 (en) |
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