WO1999038222A1 - Procede et dispositif servant a creer un motif sur un clinquant metallique - Google Patents

Procede et dispositif servant a creer un motif sur un clinquant metallique Download PDF

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Publication number
WO1999038222A1
WO1999038222A1 PCT/EP1998/007580 EP9807580W WO9938222A1 WO 1999038222 A1 WO1999038222 A1 WO 1999038222A1 EP 9807580 W EP9807580 W EP 9807580W WO 9938222 A1 WO9938222 A1 WO 9938222A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
metal foil
set forth
holes
solution
Prior art date
Application number
PCT/EP1998/007580
Other languages
English (en)
Inventor
Michael Karthaus
Original Assignee
Air Products And Chemicals, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Air Products And Chemicals, Inc. filed Critical Air Products And Chemicals, Inc.
Priority to JP11537784A priority Critical patent/JP2000513493A/ja
Priority to KR1019997008825A priority patent/KR20010005754A/ko
Priority to EP98963508A priority patent/EP0970531A1/fr
Publication of WO1999038222A1 publication Critical patent/WO1999038222A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/40—Printed batteries, e.g. thin film batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B05D1/322—Removable films used as masks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/029—Bipolar electrodes
    • 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

Definitions

  • the invention relates to a method and a device for forming a pattern of a dissolved substance on a thin metal foil, and more particularly to a method for forming a cell with a non- aqueous electrolyte.
  • the invention relates further to a device for forming a pattern of a dissolved substance on a metal foil as well as to a cell with a non-aqueous electrolyte.
  • Electrochemical cells having a non-aqueous electrolyte are used, for example, in the fabrication of round cells or lithium ion batteries .
  • To form such electrochemical cells it is necessary to coat a thin metal foil, serving as the negative electrode, with a substance serving as the positive electrode.
  • EP 0 627 780 Bl is an electrochemical secondary cell having a non-aqueous electrolyte.
  • a lithium ion solution is coated onto a metal foil, e.g. a strip of copper foil.
  • the solution is dried and the resulting laminate may be employed as the starting material, for example, for fabricating battery cells.
  • a further object of the present invention is to define a method as aforementioned so that fast, more particularly continuous fabrication of a patterned metal foil is made possible .
  • Yet a further object of the present invention is to provide a device for forming a pattern of a dissolved substance on a thin metal foil .
  • the method for forming a pattern of a dissolved substance on a thin metal foil in accordance with the invention comprises the following steps: applying an adhesive but removable film to the metal foil, holes of a desired shape being provided in the film, filling the holes in the film with a solution incorporating the dissolved substance, drying the solution incorporating the dissolved substance so that the dried substance remains in the holes, and removing the film from the metal foil so that the dried substance remains as a pattern on the metal foil, the film having a thickness substantially corresponding to the level of the solution incorporating the dissolved substance to be introduced into the holes .
  • the method in accordance with the invention as listed above has the advantage that the solution incorporating the dissolved substance can be applied in one step to the metal foil. Due to the supporting frame formed by the film with the holes the solution is now unable to weep and is able to dry so that the edges of the resulting pattern feature a precise geometric shape.
  • the procedure for applying or filling the solution implemented in but a single step accelerates the method considerably, merely the amount of solution required for the pattern in each case needing to be applied so that drying too can be be made relatively quickly. Also, there is no waste of solution.
  • the viscosity of the solution can be low.
  • the method as described above can be be sequenced continually.
  • a further major advantage of the method in accordance with the invention as compared to applying coatings as a whole is that in subsequently stamping out the patterns use can be made of such tools which include a free margin of the metal foil in stamping out which can be made use of as a terminal section.
  • the holes in the film can be produced in the film before the film is applied to the metal foil, the holes then being preferably stamped from the film.
  • stamping tools can be employed with highly accurate guidance, each of which works only the film without penetrating as far as the metal foil.
  • the stamped out film pieces are removed by a stripping device, for example by one such device working with vacuum suction.
  • Yet another possibility of producing the holes in the film consists of etching the holes from the film, i.e. should an etchant be applied to the metal foil then, of course, one which does not attack the metal foil .
  • the formation of a pattern can be done on one or both sides of the metal foil .
  • the metal foil is a thin foil of aluminum or copper having preferably a thickness of 10 to 50 ⁇ m, more particularly 20 ⁇ m.
  • the film employed in one aspect of the method in accordance with the invention is a plastics film, more particularly a film of polyester. Polyester films are advantageously insoluble as regards the solvents used in such methods .
  • the thickness of the film may be in the range of 50 to 800 ⁇ m, more particularly approximately 300 ⁇ m, the thickness depending on the level of the pattern later desired, it being as thick as the level of the applied solution in each case.
  • the sidewalls of the holes in the film extend substantially perpendicular to the main surfaces of the film, it being assured by such a configuration of the sidewalls that when the film is removed from the metal foil the sidewalls of the remaining pattern do not suffer any damage.
  • the film can be removed relatively easily without any mechanical snagging needing to be overcome .
  • the surface of the film facing away from the metal foil is treated more particularly by irradiation and/or chemically so that the solution incorporating the dissolved substance does not stick thereto.
  • Such an anti-stick treatment facilitates on the one hand removing the metal foil, whilst on the other it also contributes towards enabling solution fluid weeping past the holes to be easily removed from the surface of the film.
  • an adhesive Prior to the film being applied to the metal foil an adhesive is preferably applied to the surface of the film facing the metall foil which adhers to the film considerably more than to the metal foil, an adhesive needing to be used in this case which provides a sufficient bond between film and metal foil to enable the filling and drying procedure to be implemented without difficulty.
  • an adhesive needing to be used in this case which provides a sufficient bond between film and metal foil to enable the filling and drying procedure to be implemented without difficulty.
  • the film is removed from the metal foil once the pattern has dried it needs to be assured that all of the adhesive readhers to the film and as little as possible or nothing at all thereof remains on the metal foil.
  • an adhesive could be used with which the film is able to readher to a metal foil, once it has been released from a previously treated metal foil. Using such "repeat adhesives" would then permit repeat use of the film in the fabrication method, permitting more particularly a continual cyclic use thereof.
  • the adhesive is insoluble by the solvent of the solution, it needing to be applied evenly and at the edges exactly on the underside of the film and to adher to the metal foil at least so strongly that the solution is unable to penetrate between the metal foil and the film applied thereto, i.e. excluding "undercreep" .
  • the dissolved substance contains lithium ions.
  • the solvent for the dissolved substance in accordance with the invention is preferably N- methy1 -2 -pyrro1idone .
  • an applicator is used for filling the holes in the film applied to the metal foil which particularly with the aid of a knife introduces the solution into the holes or smooths out the filling level in the holes, thus making a very simple procedure for filling the holes possible which is substantially less complicated than the majority of the coating methods currently employed.
  • Use can be made to particular advantage of the "knife over roll" system or including the use of a flexible knife (blade) without damaging the film surface (and also as regards the choice of material) , this applying in particular when the surface of the film has been treated so that the solution does not adher thereto.
  • Drying the solution is implemented by infrared heating the metal foil side in one embodiment of the invention for a film applied one-sidedly, heating thus being applied to advantage to the metal foil side since heating the film side directly could cause a skin to form on the solution disturbing further homogenous drying .
  • the patterned metal foil and the film are separated from each other after drying by means of an air knife, the metal foil then being exited over a roll to advantage. Stripping the film from the metal foil is required 8 to be as gentle as possible without damaging the metal foil or the pattern existing thereon.
  • An air knife permits such gentle stripping. Also conceivable is a suction of the metal foil and/or film by vacuum pressure in various directions or also by gentle mechanical strippers, however, which grip the edge of the foil or film.
  • the method results in the metal foil being configured as a negative electrode and the pattern of the dissolved substance as the positive electrode of a cell having a non-aqueous electrolyte.
  • the present invention thus also defines a method of forming an (electrochemical) cell having a non-aqueous electrolyte by the following steps: applying an adhesive but removable film to a metal foil, preferably a thin aluminum or copper foil, holes of a desired shape being required to be produced in the film, filling the holes in the film with a lithium ion solution dissolved in a solvent with N-methyl-2 pyrrolidone, preferably with the aid of a knife, drying the solution so that the dried residue remains in the holes, and removing the film from the metal foil so that a pattern remains on the metal foil, the film having a thickness substantially corresponding to the level of the solution to be applied to the holes with the dissolved substance.
  • a device for forming a pattern of a dissolved substance on a thin metal foil comprising: a film in which holes of a desired shape are incorporated, and an adhesive for applying the film to the metal foil, the film having a thickness substantially corresponding to the level of the solution incorporating the dissolved substance to be introduced into the holes .
  • the invention relates also to the film used as an expedient in fabricating a patterned metal foil which can be applied by an adhesive to the metal foil and advantageously forming a "mask" for the solution introduced which can thus be applied in a single step.
  • the device in accordance with the invention thus permits achieving the advantages in the method of fabrication already discussed.
  • the cited device may advantageously comprise one or more of the following features: the film is a plastics film, more particularly a film of polyester; the film has a thickness in the range 50 to 800 ⁇ m, more particularly 300 ⁇ m; the sidewalls of the holes in the film extend substantially perpendicular to the main surfaces; the surface of the film facing away from the metal foil is treated more particularly by irradiation and/or chemically so that the solution incorporating the dissolved substance does not adher thereto; the adhesive applied to the surface of the film facing the metal foil is such that it adhers substantially stronger to the film than to the metal foil so that the film can readher to a metal foil after having been once removed from the metal foil; the adhesive is insoluble due to the solvent of the solution and more particularly adhers to the metal foil at least so strongly that the solvent cannot penetrate between film and metal foil .
  • the invention relates furthermore to an (electrochemical) cell having a non-aqueous electrolyte which is fabricated by one of the methods or by a device as cited above. 10
  • Fig. 1 is a plan view of a film which in accordance with the invention is applied to a metal foil to be patterned, with a center section illustrated below;
  • Fig. 2 is a center section of the film just before being applied to a metal foil
  • Fig. 3 is a center section of the film and metal foil in the composite condition, a solution having been introduced into the holes in the film;
  • Fig. 4 shows the metal foil with the dried pattern after stripping of the film
  • Fig. 5 illustrates electrochemical cells fabricated from the patterned metal foil .
  • Fig. 1 there is illustrated in the upper illustration a plan view of a film 1 configured in accordance with an embodiment of the present invention as a film of polyester.
  • the film of polyester 1 comprises holes 2 circular throughout spaced away from each other longitudinally.
  • Figs . 2 to 5 each show center sections with no true-to-scale representation of the dimensional relationships, more particularly as regards the thicknesses 11 involved.
  • the metal foil 3 and the film 1 are depicted the same in thickness.
  • the metal foil 3 has a thickness of approximately 10 to 50 ⁇ m, preferably 20 ⁇ m whilst the film 1 is as thick as the desired level of the solution introduced into the holes 2, namely approximately 50 to 800 ⁇ m, more particularly 300 ⁇ m.
  • Fig. 2 there is illustrated the condition just before the film 1 is applied to a metal foil 3.
  • the film 1 On the underside of the portions of the film 1 from which small holes have been stamped, the film 1 comprises an adhesive layer 8 distributed homogenously and true to edge.
  • the adhesive 8 sticks excellently to the film 1 and is furthermore configured so that although it can adher to the metal foil 3 where it prevents the ingress of solution fluid between metal foil 3 and film 1 but can be easily removed from the metal foil 3.
  • the film 1 is applied to the metal foil 3 in the direction of the arrows as shown in Fig. 2.
  • One such solution 4 may contain, for example, N-methyl-2 -pyrrolidone as the solvent.
  • the solution 4 is applied by a simple system, for example a knife system.
  • the drying procedure is introduced, for example, by heating the metal foil side 3 by irradiation so that the solvent evaporates from the solution 4.
  • Fig. 4 there is illustrated a patterned metal plate 3 after drying of the solvent and stripping of the 12 film, leaving circular patterns 5 from the dried solution on the metal foil 3.
  • the patterns 5 are depicted the same in level as the level of the solution 4 as shown in Fig. 3, to make for a better overview, in reality a reduction in level is to be assumed due to evaporation of the solvent.
  • the edge geometry of the patterns 5 is precise since the plastics film easily releases from the patterns as the side edges 7 of the holes 2, too, this being more particularly the case when also the side edges 7 of the holes 2 are treated by irradiation or chemically so that neither the solution 4 nor the dried patterns 5 stick thereto.
  • the metal foil 3 with the deposited patterns 5 can then be machine stamped. Due to patterning in accordance with the invention there is the advantageous possibility of working with stamping knives or molds which, as evident from the cells depicted in Fig. 5, include a free margin 9 of the metal foil 3 in stamping. This free margin 9 of the metal foil 3 can then be made use of as the terminal section, for example, for lithium ion cells in lithium ion batteries. The shape of the margin 9 stamped out free can be freely defined by the design of the stamping tool .

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

L'invention concerne un procédé servant à créer un motif au moyen d'une substance dissoute sur un clinquant métallique et consistant à appliquer un film adhésif mais amovible au clinquant, ce film comportant des orifices de forme adéquate, à remplir ces orifices par une solution incorporant la substance dissoute, à sécher la solution incorporant la substance dissoute, de sorte que la substance séchée reste dans les orifices, puis à enlever le film du clinquant, de façon à laisser la substance séchée sous forme de motif sur le clinquant, ce film possédant une épaisseur correspondant sensiblement au niveau de la solution incorporant la substance dissoute à introduire dans les orifices. Elle concerne, plus particulièrement, un procédé servant à créer une pile contenant une électrolyte non aqueuse, ainsi qu'un dispositif servant à créer un motif au moyen d'une substance dissoute sur un clinquant métallique et une pile contenant une électrolyte non aqueuse.
PCT/EP1998/007580 1998-01-26 1998-11-24 Procede et dispositif servant a creer un motif sur un clinquant metallique WO1999038222A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP11537784A JP2000513493A (ja) 1998-01-26 1998-11-24 薄い金属箔上でのパターンの形成方法及び装置
KR1019997008825A KR20010005754A (ko) 1998-01-26 1998-11-24 얇은 금속박상에 패턴을 형성하기 위한 방법 및 장치
EP98963508A EP0970531A1 (fr) 1998-01-26 1998-11-24 Procede et dispositif servant a creer un motif sur un clinquant metallique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19802839.3 1998-01-26
DE19802839A DE19802839A1 (de) 1998-01-26 1998-01-26 Verfahren und Vorrichtung zur Ausbildung eines Musters auf einer Metallfolie

Publications (1)

Publication Number Publication Date
WO1999038222A1 true WO1999038222A1 (fr) 1999-07-29

Family

ID=7855680

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/007580 WO1999038222A1 (fr) 1998-01-26 1998-11-24 Procede et dispositif servant a creer un motif sur un clinquant metallique

Country Status (5)

Country Link
EP (1) EP0970531A1 (fr)
JP (1) JP2000513493A (fr)
KR (1) KR20010005754A (fr)
DE (1) DE19802839A1 (fr)
WO (1) WO1999038222A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100362497B1 (ko) * 2000-10-19 2002-11-23 베스 주식회사 다공성 고분자 전해질 및 그 제조방법
JP7171848B1 (ja) * 2021-07-21 2022-11-15 Ｎｉｓｓｈａ株式会社 厚膜印刷柄付きフィルムロールとその製造方法

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US3004093A (en) * 1958-06-03 1961-10-10 Union Carbide Corp Continuous process for making solid electrolyte batteries
US3004094A (en) * 1958-06-03 1961-10-10 Union Carbide Corp Method of making unit wafer cells
US3775188A (en) * 1971-08-27 1973-11-27 Esb Inc Method of multicell battery production using pocketed continuous strip
US4537647A (en) * 1982-10-06 1985-08-27 The Boeing Company Method for applying turbulators to wind tunnel models
JPS61181061A (ja) * 1985-02-07 1986-08-13 Toshiba Battery Co Ltd 非水電解液電池用正極の製造方法
JPS61273857A (ja) * 1985-05-30 1986-12-04 Toshiba Battery Co Ltd 薄型電池の正極の製造方法
JPS6329445A (ja) * 1986-07-23 1988-02-08 Toshiba Battery Co Ltd 扁平形電池正極体の製造方法
JPH0434871A (ja) * 1990-05-29 1992-02-05 Yuasa Corp 電池の製造法
JPH05275087A (ja) * 1992-03-24 1993-10-22 Yuasa Corp 薄形電池の製造方法
EP0581964A1 (fr) * 1992-02-14 1994-02-09 Yuasa Corporation Procede pour la production d'elements d'accumulateur en couches minces
US5350645A (en) * 1993-06-21 1994-09-27 Micron Semiconductor, Inc. Polymer-lithium batteries and improved methods for manufacturing batteries
JPH06314565A (ja) * 1993-04-30 1994-11-08 Yuasa Corp 薄形電池とその製造方法
US5480462A (en) * 1994-03-02 1996-01-02 Micron Communications, Inc. Method of forming button-type battery lithium electrodes
WO1997015959A1 (fr) * 1995-10-24 1997-05-01 Isa Ag Arch Procede de fabrication d'une cellule electrochimique et cellule electrochimique obtenue selon ce procede
EP0776056A1 (fr) * 1995-11-11 1997-05-28 Dai Nippon Printing Co., Ltd. Plaque d'électrode pour pile secondaire à électrolyte non-aqueux et sa méthode de fabrication

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Publication number Priority date Publication date Assignee Title
US3004093A (en) * 1958-06-03 1961-10-10 Union Carbide Corp Continuous process for making solid electrolyte batteries
US3004094A (en) * 1958-06-03 1961-10-10 Union Carbide Corp Method of making unit wafer cells
US3775188A (en) * 1971-08-27 1973-11-27 Esb Inc Method of multicell battery production using pocketed continuous strip
US4537647A (en) * 1982-10-06 1985-08-27 The Boeing Company Method for applying turbulators to wind tunnel models
JPS61181061A (ja) * 1985-02-07 1986-08-13 Toshiba Battery Co Ltd 非水電解液電池用正極の製造方法
JPS61273857A (ja) * 1985-05-30 1986-12-04 Toshiba Battery Co Ltd 薄型電池の正極の製造方法
JPS6329445A (ja) * 1986-07-23 1988-02-08 Toshiba Battery Co Ltd 扁平形電池正極体の製造方法
JPH0434871A (ja) * 1990-05-29 1992-02-05 Yuasa Corp 電池の製造法
EP0581964A1 (fr) * 1992-02-14 1994-02-09 Yuasa Corporation Procede pour la production d'elements d'accumulateur en couches minces
JPH05275087A (ja) * 1992-03-24 1993-10-22 Yuasa Corp 薄形電池の製造方法
JPH06314565A (ja) * 1993-04-30 1994-11-08 Yuasa Corp 薄形電池とその製造方法
US5350645A (en) * 1993-06-21 1994-09-27 Micron Semiconductor, Inc. Polymer-lithium batteries and improved methods for manufacturing batteries
US5480462A (en) * 1994-03-02 1996-01-02 Micron Communications, Inc. Method of forming button-type battery lithium electrodes
WO1997015959A1 (fr) * 1995-10-24 1997-05-01 Isa Ag Arch Procede de fabrication d'une cellule electrochimique et cellule electrochimique obtenue selon ce procede
EP0776056A1 (fr) * 1995-11-11 1997-05-28 Dai Nippon Printing Co., Ltd. Plaque d'électrode pour pile secondaire à électrolyte non-aqueux et sa méthode de fabrication

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PATENT ABSTRACTS OF JAPAN vol. 011, no. 130 (E - 502) 23 April 1987 (1987-04-23) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 239 (E - 630) 7 July 1988 (1988-07-07) *
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PATENT ABSTRACTS OF JAPAN vol. 095, no. 002 31 March 1995 (1995-03-31) *

Also Published As

Publication number Publication date
KR20010005754A (ko) 2001-01-15
JP2000513493A (ja) 2000-10-10
EP0970531A1 (fr) 2000-01-12
DE19802839A1 (de) 1999-07-29

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