JPH08195202A - Battery - Google Patents
BatteryInfo
- Publication number
- JPH08195202A JPH08195202A JP7022320A JP2232095A JPH08195202A JP H08195202 A JPH08195202 A JP H08195202A JP 7022320 A JP7022320 A JP 7022320A JP 2232095 A JP2232095 A JP 2232095A JP H08195202 A JPH08195202 A JP H08195202A
- Authority
- JP
- Japan
- Prior art keywords
- active material
- battery
- foil
- current collector
- electrode
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Secondary Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Primary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電池、特に薄膜電極をセ
パレータで挟んで、渦巻き状に巻くか積層するかして作
製した電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery, and more particularly to a battery produced by sandwiching a thin film electrode between separators and spirally winding or stacking the thin film electrodes.
【０００２】[0002]
【従来の技術】従来の２次電池のうち、リチウムイオン
電池は図４に示されるようにアルミの箔に正極活物質を
塗布して正極１５とし、銅箔に負極活物質を塗布したも
のを負極１６とし、セパレータ１７を挟んで巻いて作製
するか、積層して作っている。このとき、電極１５、１
６は圧延加工して作られた箔（プレーンな面）に活物質
を塗布して作製されている。2. Description of the Related Art Among conventional secondary batteries, a lithium ion battery is a lithium ion battery in which a positive electrode active material is applied to an aluminum foil as a positive electrode 15 as shown in FIG. 4 and a negative electrode active material is applied to a copper foil. The negative electrode 16 is formed by winding it with the separator 17 sandwiched or by stacking. At this time, the electrodes 15, 1
6 is made by applying an active material to a foil (plain surface) made by rolling.
【０００３】電池の内部抵抗は活物質内に出入りするイ
オンや電子の速度（移動のし易さ）が律速となることが
分かっており、電池の出力を上げるには活物質の塗布厚
を薄くすればよいことは周知のことである。しかしなが
ら集電体の箔の厚さは工業的に銅箔で１０μｍ、アルミ
箔で２０μｍ程度が生産性や取り扱い時の破れなどを考
えると限界の厚さであった。また、セパレータ１７も薄
くしていくと電極のバリなどで破れ易くなり、ショート
不良が増えるため、これを防ぐためには、ある程度の厚
みを確保しなければならない。そのため、活物質の箔表
面への塗布厚を薄くしていくと、電池出力密度は増える
が、相対的に電池の容量とは関係ない電極１５、１６用
の集電体、セパレータ１７の体積比率が増えていくた
め、容量低下を起こすことになる。It has been known that the internal resistance of a battery is controlled by the speed (ease of movement) of ions and electrons entering and leaving the active material, and the coating thickness of the active material is reduced in order to increase the output of the battery. It is well known that what can be done is. However, the foil thickness of the collector is industrially about 10 μm and the aluminum foil is about 20 μm, which is the limit thickness considering the productivity and the breakage during handling. Further, if the separator 17 is also thinned, it easily breaks due to burrs of the electrodes and the like, and short-circuit defects increase. Therefore, in order to prevent this, it is necessary to secure a certain thickness. Therefore, when the coating thickness of the active material on the foil surface is reduced, the battery output density increases, but the volume ratio of the current collectors for the electrodes 15 and 16 and the separator 17, which are relatively unrelated to the battery capacity. As the number increases, the capacity will decrease.
【０００４】[0004]
【発明が解決しようとする課題】前述のように、薄膜電
極積層式電池または薄膜電極巻取式電池の場合は、電池
を構成する集電体、セパレータ１７の厚みに制約がある
ため、電極活物質の塗布厚を薄くして出力密度を上げよ
うとするとエネルギー密度が低下するというジレンマが
あった。As described above, in the case of the thin film electrode stack type battery or the thin film electrode winding type battery, the thickness of the current collector and the separator 17 constituting the battery is limited, so that the electrode active There is a dilemma that the energy density is reduced when the coating density of the substance is reduced to increase the power density.
【０００５】そこで、本発明の目的は電極活物質の塗布
厚を薄くせずに、エネルギー密度を落とさずに出力密度
を向上させる電池を提供することである。Therefore, an object of the present invention is to provide a battery in which the output density is improved without reducing the coating thickness of the electrode active material and without lowering the energy density.
【０００６】[0006]
【課題を解決するための手段】本発明の上記目的は次の
構成によって達成される。すなわち、箔状の集電体に正
極と負極の活物質をそれぞれ塗布して得られる電極の間
に、イオンは通過するが電気的には遮断されているセパ
レータを挟んで、渦巻き状に巻くか積層するかして作製
した電池において、表面を凹凸形状にした箔状の集電体
に活質を塗布して電極とした電池である。The above objects of the present invention can be achieved by the following constitutions. That is, a separator that allows ions to pass but is electrically blocked is sandwiched between electrodes obtained by applying a positive electrode active material and a negative electrode active material to a foil-shaped current collector, and wound in a spiral shape. In a battery produced by stacking or laminating, a foil-shaped current collector having an uneven surface is coated with an active material to form an electrode.
【０００７】本発明の電池は正極活物質としてリチウム
化合物を用いた正極と負極活物質としてリチウムをドー
プし且つ脱ドープし得る炭素質材料を用いた負極とから
なる構成とすることができる。また、箔状の集電体表面
に形成される凹凸形状は、高さ４０〜１５μｍの波状の
うねりからなる構成とすることができる。一対のガイド
ローラの一方のガイドローラの表面の凹凸形状のつけ方
は、例えば、ステンレス鋼で作られたローラ表面をエッ
チングで加工する方法またはサンドブラストで加工する
方法がある。本発明は２次電池のみならず、１次電池に
も応用可能である。The battery of the present invention may be constituted by a positive electrode using a lithium compound as a positive electrode active material and a negative electrode using a carbonaceous material capable of doping and dedoping lithium as a negative electrode active material. Further, the uneven shape formed on the surface of the foil-shaped current collector can be constituted by a wavy undulation having a height of 40 to 15 μm. One of the pair of guide rollers is provided with an uneven shape on the surface of one of the guide rollers, for example, by etching the roller surface made of stainless steel or by sandblasting. The present invention can be applied not only to secondary batteries but also to primary batteries.
【０００８】[0008]
【作用】集電体として用いる箔を凹凸状として、該凹凸
表面に活物質を塗布することにより、電池の単位容積当
たりの活物質が箔表面に接触する面積がプレーン状の箔
に比較して増加する。こうして、箔表面への活物質の塗
布膜厚を増加させずに、且つ電池のエネルギー密度を落
とさずに、出力密度を向上させることができる。[Function] When the foil used as the current collector is uneven and the active material is applied to the uneven surface, the area in which the active material contacts the foil surface per unit volume of the battery is smaller than that of a plain foil. To increase. Thus, the output density can be improved without increasing the coating thickness of the active material on the foil surface and without reducing the energy density of the battery.
【０００９】[0009]
【実施例】本発明の一実施例を図面とともに説明する。
図１に本実施例の薄膜電極の製造装置の概略図を示す。
図１の装置は電極用の集電体として用いる金属箔１が送
り出しローラ２から一対のガイドローラ３、４を介して
巻き取りローラ５に巻き取られる構成になっている。一
対のガイドローラ３、４は硬質のゴム層を設けたガイド
ローラ３と表面に凹凸が付けられたガイドローラ４とか
らなっている。そして、凹凸面を表面に付けたガイドロ
ーラ４に回転駆動力を持たせておく。ガイドローラ３の
ゴムに馴染んだ状態で一対のガイドローラ３、４間に挟
み込まれるように送られて来る金属箔１は回転駆動力を
持たせたガイドローラ４表面の凹凸面により金属箔１自
体が凹凸状となり、巻き取りローラ５に搬送される。An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic view of a thin-film electrode manufacturing apparatus of this embodiment.
The apparatus of FIG. 1 has a structure in which a metal foil 1 used as a current collector for an electrode is wound around a winding roller 5 from a delivery roller 2 via a pair of guide rollers 3 and 4. The pair of guide rollers 3 and 4 includes a guide roller 3 provided with a hard rubber layer and a guide roller 4 having an uneven surface. Then, the guide roller 4 having the uneven surface on its surface is given a rotational driving force. The metal foil 1 that is sent so as to be sandwiched between the pair of guide rollers 3 and 4 in a state of being familiar with the rubber of the guide roller 3 has the metal foil 1 itself due to the uneven surface of the surface of the guide roller 4 that has been given a rotational driving force. Becomes uneven and is conveyed to the winding roller 5.
【００１０】そして、ガイドローラ４の近傍には一対の
ガイドローラ３、４間から搬出される金属箔１部分に活
物質を塗布するための活物質スラリ流出ノズル６を備え
たスラリタンク７と該活物質スラリ流出ノズル６近傍に
金属箔１へ塗布するスラリの厚さを調節するためのブレ
ード８が設けられている。さらに該ブレード８と巻き取
りローラ５との間を搬送される金属箔１を取り囲むよう
に金属箔１上に塗布されたスラリを乾燥させるための乾
燥炉９が設けられている。In the vicinity of the guide roller 4, there is provided a slurry tank 7 having an active material slurry outflow nozzle 6 for applying the active material to a portion of the metal foil 1 carried out between the pair of guide rollers 3 and 4, and the slurry tank 7. A blade 8 for adjusting the thickness of the slurry applied to the metal foil 1 is provided near the active material slurry outflow nozzle 6. Further, a drying furnace 9 for drying the slurry applied on the metal foil 1 is provided so as to surround the metal foil 1 conveyed between the blade 8 and the winding roller 5.
【００１１】上記構成からなる薄膜電極の製造装置を用
いて、次のようにして薄膜電極を製造する。The thin film electrode manufacturing apparatus having the above structure is used to manufacture a thin film electrode as follows.
【００１２】まず、正極用の電極の作製方法を述べる。
正極用のアルミ箔（厚さ２０μｍ）を送り出しローラ２
から一対のガイドローラ３、４間に搬送すると、ガイド
ローラ４の凹凸面により、アルミ箔も凹凸状のしわがで
きた状態で一対のガイドローラ３、４から送り出され
る。そして、この凹凸状のしわができたアルミ箔上に活
物質スラリ流出ノズル６からスラリ（平均流径１５μｍ
のＬｉＣｏＯ2粉末を９１重量部とし、導電材としてグ
ラファイトを６重量部とし、結着材としてフッ化ビニリ
デン樹脂を３重量部とし、これをＮ−メチルピロリドン
で溶かしたもの）が塗布される。活物質スラリの塗布厚
さはブレード８で管理されるが、例えば６５μｍの厚さ
を有するように調整した後、乾燥炉９に送り込む。乾燥
炉９では前記スラリ中の溶剤成分であるピロリドンを揮
散させる。First, a method for producing an electrode for a positive electrode will be described.
Roller 2 that sends out aluminum foil (thickness 20 μm) for positive electrode
When the aluminum foil is conveyed between the pair of guide rollers 3 and 4, the aluminum foil is also sent out from the pair of guide rollers 3 and 4 in a state where the aluminum foil has wrinkles in the shape of irregularities. Then, the slurry (average flow diameter 15 μm) from the active material slurry outflow nozzle 6 was placed on the aluminum foil having the uneven wrinkles.
LiCoO 2 powder of 91 parts by weight, graphite as a conductive material of 6 parts by weight, vinylidene fluoride resin as a binder of 3 parts by weight, and this is dissolved with N-methylpyrrolidone). Although the coating thickness of the active material slurry is controlled by the blade 8, it is fed into the drying furnace 9 after being adjusted to have a thickness of, for example, 65 μm. In the drying furnace 9, pyrrolidone which is a solvent component in the slurry is volatilized.
【００１３】巻き取りローラ５で一度巻き取った活物質
を塗布された金属箔１をそのまま、送り出しローラ２の
取付部に移し替えて、それを今度は送り出しローラ２と
して用いて、金属箔１の裏面（活物質が塗布されていな
い面）にも前記活物質スラリを塗布する。このとき一対
のガイドローラ３、４の内、表面に凹凸のあるガイドロ
ーラ４は表面に凹凸の無いガイドローラ（図示せず）に
置き換えておく。凹凸の無いガイドローラーでも金属箔
１表面に塗布された活物質がある程度剛性があるため
に、一度形成された金属箔１の凹凸の形は保たれる。The metal foil 1 coated with the active material once wound by the take-up roller 5 is transferred as it is to the mounting portion of the delivery roller 2, and this time it is used as the delivery roller 2, so that the metal foil 1 The active material slurry is also applied to the back surface (the surface to which the active material is not applied). At this time, of the pair of guide rollers 3 and 4, the guide roller 4 having an uneven surface is replaced with a guide roller (not shown) having no uneven surface. Even with a guide roller having no unevenness, the shape of the unevenness of the metal foil 1 once formed is maintained because the active material applied to the surface of the metal foil 1 has a certain degree of rigidity.
【００１４】一方、負極も同様にして負極剤用のスラリ
ー（不活性ガス気流中で焼成した後、粉砕して得られた
平均粒径２０μｍの炭素を９０重量部とし、結着剤とし
てフッ化ビニリデン樹脂を１０重量部とし、これをＮ−
メチルピロドリンに分散したもの）をスラリタンク７に
入れ、塗布される箔を銅箔（厚さ１０μｍ）として作製
する。電気伝導度は正極の方が負極より悪い傾向がある
ので、正極に凹凸を付けると効果的である。負極に凹凸
を付けると、電気伝導度を向上させるよりむしろ金属箔
と活物質の結着性を上げる効果がある。On the other hand, in the same way for the negative electrode, 90 parts by weight of carbon having an average particle size of 20 μm, which is obtained by crushing a slurry for negative electrode agent (calcined in an inert gas stream and pulverized), is used as a binder. The vinylidene resin is 10 parts by weight, and this is N-
(Dispersed in methylpyrrodoline) is put in a slurry tank 7 and a foil to be applied is prepared as a copper foil (thickness 10 μm). Since the positive electrode tends to be worse in electric conductivity than the negative electrode, it is effective to make the positive electrode uneven. Making the negative electrode uneven has the effect of increasing the binding property between the metal foil and the active material rather than improving the electric conductivity.
【００１５】図２に示すように、以上のようにして作ら
れた電極１０（集電体１１）の端面の一部の活物質１２
を剥離して、リード線１３を電着溶接する。リード線１
３として正極の場合はアルミを電着させ、負極の場合は
ニッケルを電着させる。As shown in FIG. 2, a part of the active material 12 on the end face of the electrode 10 (current collector 11) manufactured as described above.
And the lead wire 13 is electrodeposited and welded. Lead wire 1
In the case of 3 as a positive electrode, aluminum is electrodeposited, and in the case of a negative electrode, nickel is electrodeposited.
【００１６】これらの電極１０は図１に示されるような
構成で負極・正極の間に厚さ３８μｍの微小孔が多数開
いているポリエチレンフィルムをセパレータとして挟
み、巻いたものを電池缶に挿入しておく。電池缶に挿入
する前に電極はプロピレンカーボネートとエチルカーボ
ネートの混合溶媒の中にＬｉＰＦ6を１モル／リットル
の割合で溶解して形成した電解液に漬けて、セパレータ
に電解液を浸透させておく。前記電極層を電池缶に挿入
後、負極のリード線を電池缶に電着溶接し、正極は安全
弁を通して正極蓋に通電する。また、負極缶と正極蓋は
ガスケットを挟んでクリンプシールする。Each of the electrodes 10 has a structure as shown in FIG. 1, and a polyethylene film having a large number of micropores of 38 μm in thickness is sandwiched between a negative electrode and a positive electrode as a separator, and the wound product is inserted into a battery can. Keep it. Before inserting the battery into the battery can, the electrode is immersed in an electrolytic solution formed by dissolving LiPF 6 in a mixed solvent of propylene carbonate and ethyl carbonate at a ratio of 1 mol / liter, and the electrolytic solution is permeated into the separator. . After inserting the electrode layer into the battery can, the negative electrode lead wire is electrodeposited and welded to the battery can, and the positive electrode is energized to the positive electrode lid through the safety valve. Further, the negative electrode can and the positive electrode lid are crimp-sealed with a gasket sandwiched therebetween.
【００１７】平均高さ２０μｍ、ピッチ１００μｍで凹
凸形状を表面に設けた集電体（金属箔）で電極１０を作
り、電池の出力特性を調べた結果を図３に示す。図３で
は×印は凹凸面を有する集電体、△印は凹凸面の無いプ
レーン集電体の結果を示す。図３から明らかなように本
実施例の電池は重負荷時の特性が改善されているのが分
かる。FIG. 3 shows the results of examining the output characteristics of the battery by forming the electrode 10 with a current collector (metal foil) having an average height of 20 μm and a pitch of 100 μm and having an uneven shape on the surface. In FIG. 3, x indicates the result of the current collector having an uneven surface, and Δ indicates the result of the plane current collector having no uneven surface. As is apparent from FIG. 3, the battery of this example has improved characteristics under heavy load.
【００１８】なお、図３で放電率とは放電電流の大きさ
を示したもので、電池の定格容量の関数または定格容量
を放電する時間の割合を示す。例えば、１．２Ａｈの電
池を５時間で放電する場合に１／５Ｃつまり０．２Ｃま
たは５時間率放電という。The discharge rate in FIG. 3 indicates the magnitude of the discharge current, and is a function of the rated capacity of the battery or the rate of time for discharging the rated capacity. For example, when a 1.2 Ah battery is discharged in 5 hours, it is called 1 / 5C, that is, 0.2C or a 5-hour rate discharge.
【００１９】[0019]
【発明の効果】本発明によれば、次のような効果があ
る。 （１）重負荷の放電に対して、性能向上が見られる。モ
ーターなどを駆動する用途（シェーバー、プリンタ、電
動ゴルフカートなど）で２次電池を使う場合、重負荷
（１Ｃ放電以上）が要求される場合があるが、本発明の
電池のように重負荷に耐えられると電池の容量を小さく
できるので応用範囲が広がる。 （２）集電体との対向面が多いと、集電体と活物質間の
結着力が大きく、活物質の集電体からの粉落ちが改善さ
れる。もし、活物質が粉落ちしてセパレータの表面につ
くと、集電体積層または巻き付けをおこなった時、セパ
レータが破れてショートする可能性があるが、粉落ちを
改善することにより歩留を改善できる。The present invention has the following effects. (1) Performance improvement is observed against heavy load discharge. When a secondary battery is used for the purpose of driving a motor (shaver, printer, electric golf cart, etc.), a heavy load (1 C discharge or more) may be required. If it can withstand, the capacity of the battery can be reduced, and the range of applications will be expanded. (2) When there are many opposing surfaces to the current collector, the binding force between the current collector and the active material is large, and the powder drop of the active material from the current collector is improved. If the active material falls onto the surface of the separator when it falls on the surface of the separator, the separator may be broken and short-circuited when the current collector is stacked or wrapped, but the yield is improved by improving the falling powder. it can.
【図１】本発明の一実施例の薄膜電極の製造装置の概念
図である。FIG. 1 is a conceptual diagram of a thin film electrode manufacturing apparatus according to an embodiment of the present invention.
【図２】本発明の一実施例の薄膜電極の展開図である。FIG. 2 is a development view of a thin film electrode according to an embodiment of the present invention.
【図３】本発明の一実施例の電池の放電容量と放電率と
の関係図である。FIG. 3 is a relationship diagram between a discharge capacity and a discharge rate of a battery according to an example of the present invention.
【図４】従来のリチウムイオン電池の内部構造の説明図
である。FIG. 4 is an explanatory diagram of an internal structure of a conventional lithium ion battery.
１ 金属箔 ２ 送り出しローラ ３、４ ガイドローラ ５ 巻き取りローラ ６ 活物質スラリ流出ノズル ７ スラリタンク ８ ブレード ９ 乾燥炉 １０ 電極 １１ 集電体 １２ 活物質 １３ リード線 1 Metal Foil 2 Sending Roller 3 4 Guide Roller 5 Winding Roller 6 Active Material Slurry Outflow Nozzle 7 Slurry Tank 8 Blade 9 Drying Furnace 10 Electrode 11 Current Collector 12 Active Material 13 Lead Wire
Claims (3)
れぞれ塗布して得られる電極の間に、イオンは通過する
が電気的には遮断されているセパレータを挟んで、渦巻
き状に巻くか積層するかして作製した電池において、表
面を凹凸形状にした箔状の集電体に活質を塗布して電極
としたことを特徴とする電池。1. A spiral-shaped collector having a positive electrode and a negative electrode active material coated on a foil-shaped current collector, and a separator that allows ions to pass through but is electrically blocked, sandwiched between the electrodes. A battery produced by winding or stacking on a foil, characterized in that a foil-shaped current collector having an uneven surface is coated with an active material to form an electrode.
た正極と負極活物質としてリチウムをドープし且つ脱ド
ープし得る炭素質材料を用いた負極とからなることを特
徴とする請求項１記載の電池。2. The battery according to claim 1, comprising a positive electrode using a lithium compound as a positive electrode active material and a negative electrode using a carbonaceous material capable of doping and dedoping lithium as a negative electrode active material. .
は、高さ４０〜１５μｍの波状のうねりからなることを
特徴とする請求項１または２記載の電池。3. The battery according to claim 1, wherein the uneven shape formed on the surface of the foil-shaped current collector is a wavy undulation having a height of 40 to 15 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7022320A JPH08195202A (en) | 1995-01-17 | 1995-01-17 | Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7022320A JPH08195202A (en) | 1995-01-17 | 1995-01-17 | Battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08195202A true JPH08195202A (en) | 1996-07-30 |
Family
ID=12079439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7022320A Pending JPH08195202A (en) | 1995-01-17 | 1995-01-17 | Battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08195202A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117589A (en) * | 1997-11-21 | 2000-09-12 | Sanyo Electric Co., Ltd. | Lithium battery with roughened electrode tab |
| WO2012011696A3 (en) * | 2010-07-22 | 2012-03-29 | 주식회사 엘지화학 | Binder having excellent adhesion for secondary battery |
| US8202642B2 (en) | 2006-11-15 | 2012-06-19 | Panasonic Corporation | Current collector for non-aqueous secondary battery, electrode plate for non-aqueous secondary battery using the same, and non-aqueous secondary battery |
| CN110176573A (en) * | 2019-04-28 | 2019-08-27 | 湖北大学 | A kind of modification method of lithium ion cell electrode production |
| CN112743243A (en) * | 2021-01-07 | 2021-05-04 | 中国科学院力学研究所 | Preparation method and device of surface roughened and perforated current collector foil |
| CN112845589A (en) * | 2021-01-07 | 2021-05-28 | 中国科学院力学研究所 | Rolling method of high-elongation surface roughened current collector foil |
| CN114243024A (en) * | 2021-11-17 | 2022-03-25 | 喆烯新材(北京)科技有限公司 | Preparation method and preparation equipment of graphene roughened current collector |
| CN114951427A (en) * | 2022-05-13 | 2022-08-30 | 喆烯新材(北京)科技有限公司 | Metal foil surface micro-modeling method and device |
| WO2024049243A1 (en) * | 2022-09-02 | 2024-03-07 | 주식회사 엘지에너지솔루션 | Plasma processing apparatus and lamination system for secondary battery comprising same |
-
1995
- 1995-01-17 JP JP7022320A patent/JPH08195202A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117589A (en) * | 1997-11-21 | 2000-09-12 | Sanyo Electric Co., Ltd. | Lithium battery with roughened electrode tab |
| US6197074B1 (en) | 1997-11-21 | 2001-03-06 | Sanyo Electric Co., Ltd. | Method of manufacturing a lithium battery |
| US8202642B2 (en) | 2006-11-15 | 2012-06-19 | Panasonic Corporation | Current collector for non-aqueous secondary battery, electrode plate for non-aqueous secondary battery using the same, and non-aqueous secondary battery |
| WO2012011696A3 (en) * | 2010-07-22 | 2012-03-29 | 주식회사 엘지화학 | Binder having excellent adhesion for secondary battery |
| US9413011B2 (en) | 2010-07-22 | 2016-08-09 | Lg Chem, Ltd. | Binder for secondary battery exhibiting excellent adhesion force |
| CN110176573A (en) * | 2019-04-28 | 2019-08-27 | 湖北大学 | A kind of modification method of lithium ion cell electrode production |
| CN112743243A (en) * | 2021-01-07 | 2021-05-04 | 中国科学院力学研究所 | Preparation method and device of surface roughened and perforated current collector foil |
| CN112845589A (en) * | 2021-01-07 | 2021-05-28 | 中国科学院力学研究所 | Rolling method of high-elongation surface roughened current collector foil |
| CN114243024A (en) * | 2021-11-17 | 2022-03-25 | 喆烯新材(北京)科技有限公司 | Preparation method and preparation equipment of graphene roughened current collector |
| CN114243024B (en) * | 2021-11-17 | 2023-09-05 | 荣烯新材(北京)科技有限公司 | Preparation method and preparation equipment of graphene roughened current collector |
| CN114951427A (en) * | 2022-05-13 | 2022-08-30 | 喆烯新材(北京)科技有限公司 | Metal foil surface micro-modeling method and device |
| WO2024049243A1 (en) * | 2022-09-02 | 2024-03-07 | 주식회사 엘지에너지솔루션 | Plasma processing apparatus and lamination system for secondary battery comprising same |
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