JPH11120994A - Electrode having interleaf film and its manufacture - Google Patents
Electrode having interleaf film and its manufactureInfo
- Publication number
- JPH11120994A JPH11120994A JP10230008A JP23000898A JPH11120994A JP H11120994 A JPH11120994 A JP H11120994A JP 10230008 A JP10230008 A JP 10230008A JP 23000898 A JP23000898 A JP 23000898A JP H11120994 A JPH11120994 A JP H11120994A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- active material
- interleaf
- material layer
- interleaf film
- 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.)
- Withdrawn
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)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、インターリーフ膜
を有する電極およびその製造方法に関し、詳しくは、電
極活物質を含むインターリーフ膜を有する電極に関す
る。The present invention relates to an electrode having an interleaf film and a method for producing the same, and more particularly, to an electrode having an interleaf film containing an electrode active material.
【0002】[0002]
【従来の技術】重合性電極活物質で製造される集電基板
を有する電池が、数年前より、当該技術分野で知られて
いる。また、インターリーフ膜が製造工程中に、電極活
物質の表面と一時的に結合し得ることも良く知られてい
る。BACKGROUND OF THE INVENTION Batteries having a current collecting substrate made of a polymerizable electrode active material have been known in the art for several years. It is also well known that the interleaf film can be temporarily bonded to the surface of the electrode active material during the manufacturing process.
【0003】重合性電極活物質は、機能的には利用可能
であるといえるが、電極の品質、強度、可撓性に関わる
問題点、特に製造工程に起因する問題点がある。例え
ば、従来のインターリーフ材料において、通常、硬化炉
内でローラーの圧力が加えられて滑りを生ずる結果、電
極活物質が集電基板へ不均一に付着する。更に、そのよ
うな圧力が加えられると、通常、電極活物質がインター
リーフ材料の周囲に移動し、硬化炉のローラーに付着す
る。電極活物質がローラーに付着すると、ローラーに曝
される後続の電極活物質はいずれも、汚染されたローラ
ーの不均一面によって損傷を受ける。更に、そのような
物質の移動によってローラーが損傷し、その結果、装置
を停止させてローラーを交換することが必要となる。Although the polymerizable electrode active material can be said to be functionally usable, it has problems related to the quality, strength and flexibility of the electrode, particularly problems due to the manufacturing process. For example, in a conventional interleaf material, the pressure of a roller is usually applied in a curing furnace to cause slippage, and as a result, the electrode active material adheres unevenly to the current collecting substrate. Further, when such pressure is applied, the electrode active material usually moves around the interleaf material and adheres to the rollers of the curing furnace. When the electrode active material adheres to the roller, any subsequent electrode active material exposed to the roller is damaged by the uneven surface of the contaminated roller. In addition, the transfer of such materials can damage the rollers, resulting in the need to stop the device and replace the rollers.
【0004】製造工程の途中でインターリーフ材料が除
かれるとき、電極活物質の一部がインターリーフ材料に
付着し、それによって不均一な電極表面層が形成され
る。このような電極表面層の不均一性により、製造され
た電池の機械的特性とサイクル性能は劣化する。When the interleaf material is removed during the manufacturing process, a portion of the electrode active material adheres to the interleaf material, thereby forming a non-uniform electrode surface layer. Such non-uniformity of the electrode surface layer deteriorates the mechanical characteristics and cycle performance of the manufactured battery.
【0005】[0005]
【発明が解決しようとする課題】本発明の目的は、電極
材料の製造工程において、電極活物質がローラーを汚染
し、損傷することなく、均一な電極表面層を形成出来、
電極の品質、強度、可撓性に関わる問題点が解消され
た、インターリーフ膜を有する電極およびその製造方法
を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to form a uniform electrode surface layer without contaminating and damaging the roller with an electrode active material in a manufacturing process of an electrode material.
An object of the present invention is to provide an electrode having an interleaf film and a method for manufacturing the electrode, in which problems relating to the quality, strength, and flexibility of the electrode have been solved.
【0006】[0006]
【課題を解決するための手段】本発明者らは、上記目的
を達成すべく鋭意検討した結果、従来、電極製造の際に
一時的に使用されていたインターリーフ膜の代りに、電
極活物質層と一体に結合するインターリーフ膜を使用す
ることにより、上記の目的を達成し得るとの知見を得
た。Means for Solving the Problems The inventors of the present invention have made intensive studies to achieve the above object, and as a result, an electrode active material has been used instead of an interleaf film which has been temporarily used in the production of an electrode. It has been found that the above object can be achieved by using an interleaf film that is integrally bonded to a layer.
【0007】本発明は上記の知見に基づき完成されたも
のであり、その第1の要旨は、集電基板、電極活物質
層、前記活物質層と一体に結合するインターリーフ膜か
ら成る電池用電極に存する。The present invention has been completed based on the above findings, and a first gist thereof is for a battery comprising a current collecting substrate, an electrode active material layer, and an interleaf film integrally bonded to the active material layer. Exists on the electrodes.
【0008】第1の要旨の好ましい実施態様では、一体
式インターリーフ膜が、少なくとも一部分の電極活物質
と結合する不織ポリプロピレンから成る。[0008] In a preferred embodiment of the first aspect, the integral interleaf membrane comprises a non-woven polypropylene that binds at least a portion of the electrode active material.
【0009】第1の要旨の他の好ましい実施態様では、
一体式インターリーフ膜が、活物質層の重合を促進する
手段を有する。重合促進手段としては、前記一体式イン
ターリーフ膜に、インターリーフ膜と結合できる重合開
始剤を含浸させる。In another preferred embodiment of the first aspect,
The integrated interleaf film has a means for promoting polymerization of the active material layer. As the polymerization accelerating means, the integral type interleaf film is impregnated with a polymerization initiator capable of binding to the interleaf film.
【0010】第1の要旨の他の好ましい実施態様では、
電極は、重合性電解質を活物質層に固着させる手段を有
する。電解質固着手段としては、活物質層の上方に延在
する部分を有する一体式インターリーフ膜であり、この
延在した部分が電解質と一体的に協働し得る。In another preferred embodiment of the first aspect,
The electrode has means for fixing the polymerizable electrolyte to the active material layer. The electrolyte fixing means is an integrated interleaf film having a portion extending above the active material layer, and the extended portion can cooperate integrally with the electrolyte.
【0011】第1の要旨の他の好ましい実施態様では、
電極が、インターリーフ膜を通過するイオンの移動を促
進する手段を有する。イオン移動促進手段としては、所
定イオンに対して透過性を有する一体式インターリーフ
膜である。加えて、インターリーフ膜を、電極の引張強
度と可撓性を増加する手段として使用してもよい。In another preferred embodiment of the first aspect,
The electrode has means for promoting the movement of ions through the interleaf membrane. The ion transfer promoting means is an integrated interleaf film having permeability for predetermined ions. In addition, an interleaf membrane may be used as a means to increase the tensile strength and flexibility of the electrode.
【0012】本発明の第2の要旨は、集電基板、電極活
物質層、重合開始剤を含有し前記電極活物質層と結合す
るインターリーフ膜から成る電池用電極に存する。A second aspect of the present invention resides in a battery electrode comprising a current collecting substrate, an electrode active material layer, and an interleaf film containing a polymerization initiator and bonding to the electrode active material layer.
【0013】本発明の第3の要旨は、電解質、第1電
極、第2電極から成る電池であって、前記第1電極と第
2電極の少なくとも1つが集電基板、電極活物質層、前
記活物質層と一体に結合するインターリーフ膜から成
り、前記インターリーフ膜が前記活物質層の少なくとも
一部分から連続して延び、前記電解質の少なくとも一部
分に入り込んでいることを特徴とする電池に存する。A third aspect of the present invention is a battery comprising an electrolyte, a first electrode, and a second electrode, wherein at least one of the first electrode and the second electrode includes a current collecting substrate, an electrode active material layer, An interleaf film integrally bonded to an active material layer, wherein the interleaf film extends continuously from at least a portion of the active material layer and penetrates at least a portion of the electrolyte.
【0014】本発明の第4の要旨は、重合性活物質層を
集電基板の表面に付着させる工程;インターリーフ膜を
前記重合性活物質層の少なくとも一部分へ、一体に結合
させる工程;重合開始剤を前記重合性活物質層に結合さ
せる工程;前記活物質層を少なくとも部分的に硬化させ
る工程とから成る電池用電極の製造方法に存する。[0014] A fourth aspect of the present invention is a step of attaching a polymerizable active material layer to the surface of a current collecting substrate; a step of integrally bonding an interleaf film to at least a portion of the polymerizable active material layer; Bonding an initiator to the polymerizable active material layer; and at least partially curing the active material layer.
【0015】本発明の第4の要旨の好ましい実施態様で
は、少なくとも一部の電極活物質中へインターリーフ膜
を一体的に結合させる工程の前に、インターリーフ膜に
重合開始剤を結合させる。この好ましい実施態様におい
て、重合開始剤を結合させる工程は、インターリーフ膜
に重合開始剤を含浸させる工程を有する。[0015] In a preferred embodiment of the fourth aspect of the present invention, the polymerization initiator is bonded to the interleaf film before the step of integrally bonding the interleaf film into at least a part of the electrode active material. In this preferred embodiment, the step of binding the polymerization initiator includes a step of impregnating the interleaf film with the polymerization initiator.
【0016】本発明の第4の要旨の他の好ましい実施態
様では、電極活物質を少なくとも部分的に硬化させる工
程が、電極活物質と重合開始剤を紫外線、赤外線、熱エ
ネルギービーム、および電子ビームの少なくとも一つに
暴露させることによって硬化させる工程を有する。[0016] In another preferred embodiment of the fourth aspect of the present invention, the step of at least partially curing the electrode active material comprises the steps of: applying ultraviolet light, infrared light, a thermal energy beam, and an electron beam to the electrode active material and the polymerization initiator. Curing by exposing to at least one of
【0017】本発明の第5の要旨は、重合性活物質層を
集電基板の表面に塗付する工程;インターリーフ膜を前
記重合性電極活物質層の少なくとも一部分に一体に結合
させる工程;重合開始剤を前記重合性活物質層と結合さ
せる工程;前記活物質層を少なくとも部分的に硬化させ
る工程;電解質を前記少なくとも部分的に硬化した電極
活物質に結合させる工程;前記電解質に隣接する第2電
極を結合させる工程とから成る電池の製造方法に存す
る。According to a fifth aspect of the present invention, a step of applying a polymerizable active material layer to the surface of a current collecting substrate; a step of integrally bonding an interleaf film to at least a portion of the polymerizable electrode active material layer; Bonding a polymerization initiator to the polymerizable active material layer; at least partially curing the active material layer; bonding an electrolyte to the at least partially cured electrode active material; adjacent to the electrolyte Bonding the second electrode.
【0018】[0018]
【発明の実施の形態】本発明の最大の特徴は、従来、電
池製造の際に一時的に使用されていたインターリーフ膜
の代りに、電極活物質層と一体に結合するインターリー
フ膜を使用し、電極の中にインターリーフ膜を組み込む
ことにより、電極材料の製造の際に生じる問題点、およ
び、それに起因する種々の電極の性能上の問題点を解決
した点にある。以下、本発明を図面を用いて説明する。
尚、本発明は、多種多様な実施態様が可能であるため、
本発明は以下の実施態様に限定されない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The most important feature of the present invention is that an interleaf film which is integrally bonded to an electrode active material layer is used instead of an interleaf film which has been temporarily used in the manufacture of a battery. However, by incorporating an interleaf film in the electrode, the problem that arises in the production of the electrode material and the problem of the performance of various electrodes caused by the problem are solved. Hereinafter, the present invention will be described with reference to the drawings.
It should be noted that the present invention is capable of a wide variety of embodiments,
The present invention is not limited to the following embodiments.
【0019】図1は先行技術の電池の概略図である。電
池10は第1電極12、電解質14および第2電極16
から成る。更に、第1電極12は集電基板18と電極活
物質20から成り、第2電極16は集電基板22と電極
活物質24から成る。図1から容易に分かるように、先
行技術の電池において、第1電極12と第2電極16
は、インターリーフ膜と関連性を有しない。FIG. 1 is a schematic diagram of a prior art battery. Battery 10 includes a first electrode 12, an electrolyte 14, and a second electrode 16
Consists of Further, the first electrode 12 includes a current collecting substrate 18 and an electrode active material 20, and the second electrode 16 includes a current collecting substrate 22 and an electrode active material 24. As can be readily seen from FIG. 1, in a prior art battery, a first electrode 12 and a second electrode 16 were used.
Has no relevance to the interleaf film.
【0020】図2は、先行技術における電池用電極の製
造方法の概略図である。図2に示す通り、先行技術によ
る電極製造方法は、別々の工程でありながら相互に依存
するいくつかの工程から成る。電極ペーストポンプ30
は、電極ペースト、即ち電極活物質を、混合および/ま
たは保持し、次にこれをミキサー32に圧送し、そこで
重合開始剤を添加する。電極活物質と重合開始剤との混
合物は、続いて、塗布ヘッド34に圧送され、所定量の
電極活物質/重合開始剤を集電基板18の表面36上に
堆積させる。FIG. 2 is a schematic view of a conventional method for manufacturing a battery electrode. As shown in FIG. 2, the prior art method of manufacturing an electrode consists of several separate but interdependent steps. Electrode paste pump 30
Mixes and / or holds the electrode paste, ie, the electrode active material, which is then pumped to a mixer 32 where the polymerization initiator is added. The mixture of the electrode active material and the polymerization initiator is subsequently pumped to the application head 34 to deposit a predetermined amount of the electrode active material / polymerization initiator on the surface 36 of the current collecting substrate 18.
【0021】これに代わる方法として、電極活物質を集
電基板18の表面36に塗布し、次いで開始剤保持容器
40と開始剤ウイック42を使用して重合開始剤を送出
する方法が知られている。As an alternative method, a method is known in which the electrode active material is applied to the surface 36 of the current collecting substrate 18 and then the polymerization initiator is delivered using the initiator holding container 40 and the initiator wick 42. I have.
【0022】電極活物質と重合開始剤の混合物を、集電
基板上に置いた後、従来のインターリーフ44は、混合
されて塗布された電極活物質の上部に、硬化炉46内へ
の載置直前に塗布される。集電基板18と、電極活物質
/重合開始剤と、従来のインターリーフ44との積層体
は、硬化炉46内で、一連のローラー48を介して通過
する。従って、いくつかの問題、即ち、従来のインター
リーフの偶発的な滑りおよび/または移動による電極活
物質の機械的な欠陥が発生し、集電基板上での電極活物
質の均一性が変化する。更に、従来のインターリーフ
は、ローラー48により電極活物質上に押し付けられる
ので、望ましくない量の電極活物質がローラー48上に
付着する。ローラー48上の電極活物質の量が多すぎる
と、電極の製造に悪影響を及ぼすばかりでなく、ローラ
ー48にも損傷を与える。After the mixture of the electrode active material and the polymerization initiator is placed on the current collecting substrate, the conventional interleaf 44 is placed in the curing furnace 46 on the mixed and applied electrode active material. It is applied just before placing. The laminate of current collector substrate 18, electrode active material / polymerization initiator, and conventional interleaf 44 passes through a series of rollers 48 in curing oven 46. Therefore, some problems occur, that is, a mechanical defect of the electrode active material occurs due to the accidental sliding and / or movement of the conventional interleaf, and the uniformity of the electrode active material on the current collecting substrate changes. . Furthermore, the conventional interleaf is pressed onto the electrode active material by the roller 48, so that an undesirable amount of the electrode active material adheres to the roller 48. If the amount of the electrode active material on the roller 48 is too large, not only does the production of the electrode be adversely affected, but also the roller 48 is damaged.
【0023】「硬化した」ばかりの電極活物質(当該技
術で、「硬化した」という用語は、電極活物質と重合開
始剤とを、例えば、紫外線、赤外線、熱エネルギーおよ
び電子ビームの少なくとも一つに曝すことにより電極活
物質を少なくとも部分的に重合させる意味を含む)は、
硬化炉46を出た後、電極受入れローラー52によって
収集される。ほぼ同時に、引き取りリール50により、
インターリーフ44は、電極の硬化した(または部分的
に硬化した)電極活物質から引き離されて、除去され
る。引き取りリール50により、従来のインターリーフ
44が、製造された電極から除かれると、電極活物質の
一部が従来のインターリーフの底面51に実際に付着
し、これによって、電極活物質の表面均一性と機械的完
全性が悪影響を受け、結果として電極も悪影響を受け
る。Electrode active material that has just been "cured" (in the art, the term "cured" refers to the use of an electrode active material and a polymerization initiator, such as at least one of ultraviolet, infrared, thermal energy, and electron beam). Including at least partially polymerizing the electrode active material by exposure to
After exiting the curing oven 46, it is collected by the electrode receiving rollers 52. Almost at the same time, the take-up reel 50
The interleaf 44 is removed from the cured (or partially cured) electrode active material of the electrode. When the take-off reel 50 removes the conventional interleaf 44 from the manufactured electrode, a portion of the electrode active material actually adheres to the bottom surface 51 of the conventional interleaf, thereby providing a uniform surface of the electrode active material. The properties and mechanical integrity are adversely affected, and consequently the electrodes.
【0024】図3は先行技術における、集電基板上に塗
布された電極活物質層の断面図であり、先行技術の電極
製造方法によって生じる電極活物質の不均一表面を示
す。集電基板18上の硬化した電極活物質20の不規則
表面60により、電極の機械的および電気化学的完全性
が低下するだけでなく、デンドライトの形成も促進し
て、電池の電気抵抗を増加させ、電池の短絡を早期に発
生させる。FIG. 3 is a cross-sectional view of the electrode active material layer applied on the current collecting substrate in the prior art, and shows a non-uniform surface of the electrode active material generated by the prior art electrode manufacturing method. The irregular surface 60 of the cured electrode active material 20 on the current collector substrate 18 not only reduces the mechanical and electrochemical integrity of the electrode, but also promotes the formation of dendrites, increasing the electrical resistance of the battery. And short-circuiting of the battery occurs early.
【0025】図4は本発明の電池の概略図である。本発
明の電池70は、第1電極72、電解質74、第2電極
76とから成る。第1電極72は、更に、集電基板7
8、電極活物質80、一体として結合するインターリー
フ膜82とから成る。第2電極76は、更に、集電基板
84と電極活物質86とから成る。本実施態様には示し
ていないが、第2電極76はインターリーフ膜と結合す
ることも含まれる。集電基板78としては、アルミニウ
ム、ニッケル、銅、リチウム等の従来の集電材料を使用
することができる。FIG. 4 is a schematic diagram of the battery of the present invention. The battery 70 of the present invention includes a first electrode 72, an electrolyte 74, and a second electrode 76. The first electrode 72 further includes a current collecting substrate 7.
8, an electrode active material 80, and an interleaf film 82 integrally bonded. The second electrode 76 further includes a current collecting substrate 84 and an electrode active material 86. Although not shown in this embodiment, the second electrode 76 may be combined with an interleaf film. As the current collecting substrate 78, a conventional current collecting material such as aluminum, nickel, copper, and lithium can be used.
【0026】本発明で、第1電極活物質80は、電気化
学的活性化合物と、電気化学的導電性添加物と、イオン
伝導ポリマーとを、第1集電基板78に塗布した後、部
分的および/または全部を重合させることにより作成す
る。電気化学的活性化合物としては、酸化リチウムニッ
ケル、酸化リチウムコバルト、酸化リチウムマンガン、
又は、他のリチウム遷移金属の酸化物、等が挙げられ、
電気化学的導電性添加物としては、炭素またはグラファ
イト等が挙げられる。もちろん、ここに例示した以外の
公知の電極活物質も使用出来る。このことは、第2電極
活物質86と電解質74についても同様である。In the present invention, the first electrode active material 80 is formed by applying an electrochemically active compound, an electrochemically conductive additive, and an ion conductive polymer to the first current collecting substrate 78, and then forming a part thereof. And / or by polymerizing all. As the electrochemically active compound, lithium nickel oxide, lithium cobalt oxide, lithium manganese oxide,
Or, oxides of other lithium transition metals, and the like,
Examples of the electrochemically conductive additive include carbon and graphite. Of course, known electrode active materials other than those exemplified here can also be used. This is the same for the second electrode active material 86 and the electrolyte 74.
【0027】一体に結合するインターリーフ膜82は、
好ましくは、不織ポリプロピレン(不織スパン結合ポリ
プロピレン、PGI Non−Woven Inc.
(ペンシルヴァニア州、ウエストチェスター)社製、或
いは、Ahlstrom Filtration I
nc.(ペンシルバニア州、Mount Holly S
prings)社製)から成る。不織ポリプロピレン
は、多孔性であり、その厚さは比較的薄いので、所定の
イオンがインターリーフ膜を通って移動できる。インタ
ーリーフ膜の材料としては、不織ポリプロピレン以外に
も、最終的に結合する電池の残余部分に対して化学的に
不活性な材料で、且つ、電極の引張り強度と可撓性を高
めるための手段として使用できる他の材料を使用しても
よい。The interleaf film 82 bonded together is
Preferably, non-woven polypropylene (non-woven spun bonded polypropylene, PGI Non-Woven Inc.
(Westchester, Pa.) Or Ahlstrom Filtration I
nc. (Mount Holly S, Pennsylvania
(Prings). Non-woven polypropylene is porous and its thickness is relatively thin, so that certain ions can move through the interleaf membrane. As a material of the interleaf film, other than the non-woven polypropylene, a material that is chemically inert to the remaining part of the battery to be finally bonded, and for increasing the tensile strength and flexibility of the electrode. Other materials that can be used as a means may be used.
【0028】図5は本発明の電池用電極の製造方法の概
略図を、図6は重合開始剤を含浸させた本発明のインタ
ーリーフ膜の概略図を、図7は本発明による電極の断面
図を、それぞれ示す。図5に示す様に、本発明は、図4
と図6の第1電極72の様な電極の製造方法も含む。図
5を使用して、本発明の製造方法を説明する。本発明の
電極製造方法では、その構成要素として、所定量の電極
ペースト、即ち電極活物質をミキサー102内に供給す
るための電極ペーストポンプ、即ち電極活物質ポンプ1
00を含む。電極活物質は、ミキサー102内で混合さ
れた後、塗布ヘッド104に搬送される。集電ローラー
110から供給される集電基板78の表面106に、塗
布ヘッド104より供給される電極活物質を付着させ
る。電極活物質が集電基板78の表面106に塗布され
るた後、インターリーフローラー109から供給された
インターリーフ膜82を、電極活物質と結合させる。FIG. 5 is a schematic view of a method for manufacturing a battery electrode of the present invention, FIG. 6 is a schematic view of an interleaf film of the present invention impregnated with a polymerization initiator, and FIG. 7 is a cross section of the electrode according to the present invention. The figures are shown respectively. As shown in FIG.
And a method of manufacturing an electrode such as the first electrode 72 of FIG. The manufacturing method of the present invention will be described with reference to FIG. In the electrode manufacturing method of the present invention, an electrode paste pump for supplying a predetermined amount of electrode paste, that is, an electrode active material, into the mixer 102, that is, an electrode active material pump 1
00. After being mixed in the mixer 102, the electrode active material is transported to the coating head 104. The electrode active material supplied from the coating head 104 is attached to the surface 106 of the current collecting substrate 78 supplied from the current collecting roller 110. After the electrode active material is applied to the surface 106 of the current collecting substrate 78, the interleaf film 82 supplied from the interleaf roller 109 is combined with the electrode active material.
【0029】本発明の好ましい実施態様では、図6に示
す様に、電極活物質ペースト/集電基板への塗布工程の
前に、重合開始剤160を、インターリーフ膜82に含
浸させる。重合開始剤をインターリーフ膜に含浸させる
ので、電極活物質の重合の均一性が向上する。In a preferred embodiment of the present invention, as shown in FIG. 6, the interleaving film 82 is impregnated with the polymerization initiator 160 before the step of coating the electrode active material paste / current collector substrate. Since the polymerization initiator is impregnated into the interleaf film, the uniformity of polymerization of the electrode active material is improved.
【0030】他の好ましい実施態様において、すでに積
層された第1インターリーフ膜82の上面82’に、ロ
ーラー111’(図5において破線で示される)を使用
して、第2インターリーフ膜111(図5において破線
で示される)を、積層してもよい。硬化炉112内を通
過させた後、引き取りロール136により、第2インタ
ーリーフ膜111が除かれるが、図7で示すように、電
極活物質80と結合するインターリーフ膜82は、第1
電極72に残る。インターリーフ膜82が電極活物質と
恒久的に結合するので、製造された電極材料の引張り強
度と可撓性が増加し、電極の圧延や曲げ時の割れおよび
/または破壊に対する耐性が付与される。In another preferred embodiment, the second interleaf film 111 (shown in dashed lines in FIG. 5) is applied to the upper surface 82 ′ of the first interleaf film 82 which has already been laminated. (Indicated by a broken line in FIG. 5). After passing through the inside of the curing furnace 112, the second interleaf film 111 is removed by the take-off roll 136, but as shown in FIG. 7, the interleaf film 82 bonded to the electrode active material 80 becomes the first interleaf film 82.
It remains on the electrode 72. Since the interleaf film 82 is permanently bonded to the electrode active material, the tensile strength and flexibility of the manufactured electrode material are increased, and resistance to cracking and / or breaking during rolling or bending of the electrode is provided. .
【0031】インターリーフ膜82を電極活物質80へ
積層した後、集電基板78、電極活物質80、およびイ
ンターリーフ膜82から成る積層体は、硬化炉112に
搬送され、そこで電極活物質80の少なくとも部分的な
重合が促進される。硬化炉中において、集電基板78、
電極活物質80およびインターリーフ膜82から成る積
層体は、一連のローラー132を通過する。これらのロ
ーラー132は、特に、硬化時に電極活物質80と集電
材料78の均一性を促進するために、集電材料の適切な
張力を維持する働きを有する。硬化を行うために、ここ
では、硬化炉112を使用して説明したが、他の従来の
硬化方法(当業者が、通常理解している硬化方法)も同
様に使用出来る。After laminating the interleaf film 82 on the electrode active material 80, the laminate composed of the current collecting substrate 78, the electrode active material 80, and the interleaf film 82 is transported to a curing furnace 112, where the electrode active material 80 At least partially is promoted. In the curing furnace, the current collecting substrate 78,
The laminate composed of the electrode active material 80 and the interleaf film 82 passes through a series of rollers 132. These rollers 132 have a function of maintaining an appropriate tension of the current collecting material in order to promote the uniformity of the electrode active material 80 and the current collecting material 78 particularly during curing. Although a curing oven 112 has been described herein for performing the curing, other conventional curing methods (curing methods commonly understood by those skilled in the art) can be used as well.
【0032】製造された第1電極72は、硬化炉112
を出た後、電極引き取りリール130によりロール状に
巻き取られる。電極材料のロールは、完成電池を製造す
るための更なる後製造工程を施すために、貯蔵または使
用される。図8は、電解質と結合させた本発明の電極の
断面図を示す。後製造工程を施す際、図8の電解質74
のような電解質を、インターリーフ膜82との協働によ
り電極活物質と固定的に結合させてもよい。図8に示す
様に、インターリーフ膜82は、電解質74との固着を
促進すべく、少なくとも部分的に硬化した電極活物質8
0の上方に延びている。電解質74はインターリーフ膜
82に浸透するので、また、インターリーフ膜82が電
極活物質80と恒久的に結合するので、電極活物質8
0、インターリーフ膜82、および電解質74は、「結
合」した状態になるか、あるいは協働して互いに結合し
た状態となる。The manufactured first electrode 72 is supplied to a curing furnace 112.
Is wound up in a roll shape by the electrode take-up reel 130. The roll of electrode material is stored or used to provide further post-production steps to produce a finished battery. FIG. 8 shows a cross-sectional view of the electrode of the present invention combined with an electrolyte. When the post-manufacturing process is performed, the electrolyte 74 shown in FIG.
Such an electrolyte may be fixedly bonded to the electrode active material in cooperation with the interleaf film 82. As shown in FIG. 8, the interleaf film 82 has an at least partially cured electrode active material 8 in order to promote the adhesion with the electrolyte 74.
It extends above zero. Since the electrolyte 74 penetrates into the interleaf film 82 and the interleaf film 82 is permanently bonded to the electrode active material 80, the electrode active material 8
The 0, the interleaf film 82, and the electrolyte 74 are either "coupled" or cooperatively coupled to each other.
【0033】上記の説明と図面は、本発明を単に説明お
よび図示するものであり、本発明は、これらに限定され
るものではない。本発明は、その要旨を超えない範囲に
おいて、種々の変更および修正が可能である。The above description and drawings merely illustrate and illustrate the invention, but the invention is not limited thereto. Various changes and modifications of the present invention are possible without departing from the scope of the invention.
【0034】[0034]
【発明の効果】本発明は、電極活物質層と一体に結合す
るインターリーフ膜を使用することにより、均一な電極
表面層を形成出来、電極の品質、強度、可撓性が改良さ
れた電池用電極を提供することが出来、その工業的な価
値は極めて高い。According to the present invention, a battery having a uniform electrode surface layer formed by using an interleaf film integrally bonded to an electrode active material layer and having improved electrode quality, strength and flexibility can be obtained. Can be provided, and its industrial value is extremely high.
【図1】先行技術における、電池の概略図FIG. 1 is a schematic diagram of a battery in the prior art.
【図2】先行技術における、電池用電極の製造方法の概
略図FIG. 2 is a schematic view of a method for manufacturing a battery electrode in the prior art.
【図3】先行技術における、集電基板上に塗布された電
極活物質層の断面図FIG. 3 is a cross-sectional view of an electrode active material layer applied on a current collecting substrate in the prior art.
【図4】本発明の電池の概略図FIG. 4 is a schematic diagram of a battery of the present invention.
【図5】本発明の電池用電極の製造方法の概略図FIG. 5 is a schematic view of a method for manufacturing a battery electrode of the present invention.
【図6】重合開始剤を含浸させた、本発明のインターリ
ーフ膜の概略図FIG. 6 is a schematic view of an interleaf film of the present invention impregnated with a polymerization initiator.
【図7】本発明による電極の断面図FIG. 7 is a sectional view of an electrode according to the present invention.
【図8】電解質と結合させた、本発明の電極の断面図FIG. 8 is a cross-sectional view of the electrode of the present invention bonded to an electrolyte.
10:従来の電池 12:第1電極 14:電解質 16:第2電極 18:集電基板 20:電極活物質 22:集電基板 24:電極活物質 30:電極ペーストポンプ 32:ミキサー 34:塗布ヘッド 36:集電基板の表面 40:開始剤保持容器 42:開始剤ウイック 44:インターリーフ 46:硬化炉 48:ローラー 50:引き取りリール 51:インターリーフの底面 52:電極受入れローラー 60:不規則表面 70:本発明の電池 72:第1電極 74:電解質 76:第2電極 78:集電基板 80:電極活物質 82:インターリーフ膜 82’:インターリーフ膜の上面 84:集電基板 86:電極活物質 100:電極活物質ポンプ 102:ミキサー内 104:塗布ヘッド 106:集電基板の表面 109:インターリーフローラー 110:集電ローラー 111:第2インターリーフ膜 111’:ローラー 112:硬化炉 130:電極引き取りリール 132:ローラー 136:引き取りローラー 160:重合開始剤 10: Conventional battery 12: First electrode 14: Electrolyte 16: Second electrode 18: Current collector substrate 20: Electrode active material 22: Current collector substrate 24: Electrode active material 30: Electrode paste pump 32: Mixer 34: Coating head 36: Surface of current collecting substrate 40: Initiator holding container 42: Initiator wick 44: Interleaf 46: Curing furnace 48: Roller 50: Take-up reel 51: Bottom surface of interleaf 52: Electrode receiving roller 60: Irregular surface 70 : Battery of the present invention 72: First electrode 74: Electrolyte 76: Second electrode 78: Current collector substrate 80: Electrode active material 82: Interleaf film 82 ': Upper surface of interleaf film 84: Current collector substrate 86: Electrode active Material 100: Electrode active material pump 102: In mixer 104: Coating head 106: Surface of current collecting substrate 109: Interleaf roller 110: collector roller 111: second interleaf layer 111 ': Roller 112: curing oven 130: electrode take-off reel 132: Roller 136: take-up roller 160: polymerization initiator
Claims (37)
と一体に結合するインターリーフ膜から成る電池用電
極。1. A battery electrode comprising a current collector substrate, an electrode active material layer, and an interleaf film integrally bonded to the active material layer.
リプロピレンから成る請求項1に記載の電極。2. The electrode according to claim 1, wherein said integral interleaf membrane comprises non-woven polypropylene.
層の重合を促進する手段を有する請求項1に記載の電
極。3. The electrode according to claim 1, wherein the integrated interleaf film has a means for promoting polymerization of the active material layer.
ーリーフ膜と結合できる重合開始剤である請求項3に記
載の電極。4. The electrode according to claim 3, wherein said polymerization promoting means is a polymerization initiator capable of bonding to said integral interleaf film.
合開始剤を含浸させた請求項4に記載の電極。5. The electrode according to claim 4, wherein said integral interleaf film is impregnated with said polymerization initiator.
る手段を有する請求項1に記載の電極。6. The electrode according to claim 1, further comprising means for fixing a polymerizable electrolyte to the active material layer.
活物質層の上方に延在する部分を有する前記一体式イン
ターリーフ膜である請求項6に記載の電極。7. The electrode according to claim 6, wherein the means for fixing the polymerizable electrolyte is the integrated interleaf film having a portion extending above the active material layer.
イオンの移動を促進する手段を有する請求項1に記載の
電極。8. The electrode according to claim 1, further comprising means for facilitating the transfer of ions through said integral interleaf membrane.
に対して透過性を有する前記一体式インターリーフ膜で
ある請求項8に記載の電極。9. The electrode according to claim 8, wherein the ion movement promoting means is the integral interleaf film having permeability to predetermined ions.
るための手段を有する請求項1に記載の電極。10. The electrode according to claim 1, further comprising means for increasing the tensile strength and flexibility of the electrode.
を含有し前記電極活物質層と結合するインターリーフ膜
から成る電池用電極。11. A battery electrode comprising a current collecting substrate, an electrode active material layer, and an interleaf film containing a polymerization initiator and bonded to the electrode active material layer.
ロピレンから成る請求項11に記載の電極。12. The electrode according to claim 11, wherein said interleaf film is made of non-woven polypropylene.
重合開始剤を含浸させた請求項11に記載の電極。13. The electrode according to claim 11, wherein the integral interleaf film is impregnated with the polymerization initiator.
せる手段を有する請求項11に記載の電極。14. The electrode according to claim 11, further comprising means for fixing a polymerizable electrolyte to the active material layer.
記活物質層の上方に延在する部分を有する前記一体式イ
ンターリーフ膜である請求項14に記載の電極。15. The electrode according to claim 14, wherein the means for fixing the polymerizable electrolyte is the integrated interleaf film having a portion extending above the active material layer.
るイオンの移動を促進するための手段を有する請求項1
1に記載の電極。16. The apparatus according to claim 1, further comprising means for facilitating the transfer of ions through said integral interleaf membrane.
2. The electrode according to 1.
ンに対して透過性を有する前記一体式インターリーフ膜
である請求項16に記載の電極。17. The electrode according to claim 16, wherein the ion movement promoting means is the integrated interleaf film having permeability to predetermined ions.
るための手段を有する請求項11に記載の電極。18. The electrode according to claim 11, comprising means for increasing the tensile strength and flexibility of said electrode.
電池であって、前記第1電極と第2電極の少なくとも1
つが集電基板、電極活物質層、前記活物質層と一体に結
合するインターリーフ膜から成り、前記インターリーフ
膜が前記活物質層の少なくとも一部分から連続して延
び、前記電解質の少なくとも一部分に入り込んでいるこ
とを特徴とする電池。19. A battery comprising an electrolyte, a first electrode, and a second electrode, wherein at least one of the first electrode and the second electrode is provided.
One is composed of a current collecting substrate, an electrode active material layer, and an interleaf film integrally bonded to the active material layer, and the interleaf film continuously extends from at least a portion of the active material layer and enters at least a portion of the electrolyte. A battery characterized in that:
ロピレンから成る請求項19に記載の電池。20. The battery according to claim 19, wherein said interleaf film comprises non-woven polypropylene.
質層の重合を促進する手段を有する請求項19に記載の
電池。21. The battery according to claim 19, wherein said integral interleaf film has means for promoting polymerization of the active material layer.
ターリーフ膜と結合できる重合開始剤である請求項21
に記載の電池。22. The polymerization promoting means is a polymerization initiator capable of bonding to the integral interleaf film.
The battery according to 1.
合開始剤を含浸させた請求項22に記載の電池。23. The battery according to claim 22, wherein the integral interleaf film is impregnated with the polymerization initiator.
せる手段を有する請求項19に記載の電池。24. The battery according to claim 19, further comprising means for fixing a polymerizable electrolyte to the active material layer.
るイオンの移動を促進するための手段を有する請求項1
9に記載の電池。25. The apparatus according to claim 1, further comprising means for facilitating the movement of ions through said integral interleaf membrane.
10. The battery according to 9.
ンに対して透過性を有する前記一体式インターリーフ膜
である請求項25に記載の電池。26. The battery according to claim 25, wherein the ion transfer promoting means is the integrated interleaf membrane having permeability to predetermined ions.
るための手段を有する請求項19に記載の電池。27. The battery according to claim 19, further comprising means for increasing tensile strength and flexibility of the electrode.
着させる工程;インターリーフ膜を前記重合性活物質層
の少なくとも一部分へ、一体に結合させる工程;重合開
始剤を前記重合性活物質層に結合させる工程;前記活物
質層を少なくとも部分的に硬化させる工程とから成る電
池用電極の製造方法。28. A step of attaching a polymerizable active material layer to the surface of a current collecting substrate; a step of integrally bonding an interleaf film to at least a portion of the polymerizable active material layer; Bonding the active material layer to the material layer; and curing the active material layer at least partially.
せる工程が、前記インターリーフ膜の一部分を前記電極
活物質層の表面よりも上方に位置決めする工程を有する
請求項28に記載の製造方法。29. The manufacturing method according to claim 28, wherein the step of integrally bonding the interleaf film includes a step of positioning a part of the interleaf film above a surface of the electrode active material layer.
前記インターリーフ膜を前記電極活物質の少なくとも一
部分に一体に結合させる工程に先立って、重合開始剤を
前記インターリーフ膜と結合させる工程を有する請求項
28に記載の製造方法。30. The step of binding the polymerization initiator,
29. The method according to claim 28, further comprising a step of bonding a polymerization initiator to the interleaf film before the step of integrally bonding the interleaf film to at least a part of the electrode active material.
前記インターリーフ膜に前記重合開始剤を含浸させる工
程を有する請求項30に記載の製造方法。31. The step of binding the polymerization initiator,
The method according to claim 30, further comprising a step of impregnating the interleaf film with the polymerization initiator.
硬化させる工程が、前記電極活物質と前記重合開始剤と
を、紫外線、赤外線、熱エネルギーおよび電子ビームの
少なくとも一つに曝すことによって硬化させる工程を有
する請求項28に記載の製造方法。32. The step of at least partially curing the electrode active material comprises curing the electrode active material and the polymerization initiator by exposing the same to at least one of ultraviolet rays, infrared rays, heat energy, and an electron beam. The method according to claim 28, comprising a step.
付する工程;インターリーフ膜を前記重合性電極活物質
層の少なくとも一部分に一体に結合させる工程;重合開
始剤を前記重合性活物質層と結合させる工程;前記活物
質層を少なくとも部分的に硬化させる工程;電解質を前
記少なくとも部分的に硬化した電極活物質に結合させる
工程;前記電解質に隣接する第2電極を結合させる工程
とから成る電池の製造方法。33. a step of applying a polymerizable active material layer to the surface of the current collecting substrate; a step of integrally bonding an interleaf film to at least a portion of the polymerizable electrode active material layer; Bonding to an active material layer; at least partially curing the active material layer; bonding an electrolyte to the at least partially cured electrode active material; bonding a second electrode adjacent to the electrolyte. And a method for manufacturing a battery.
せる工程が、前記インターリーフ膜の一部分を前記重合
性電極活物質層よりも上方に位置決めする工程を有する
請求項33に記載の製造方法。34. The manufacturing method according to claim 33, wherein the step of integrally bonding the interleaf film includes a step of positioning a part of the interleaf film above the polymerizable electrode active material layer.
前記重合性電極活物質の少なくとも一部分に一体に前記
インターリーフ膜を結合させる工程に先立って、重合開
始剤を前記インターリーフ膜に結合させる工程を有する
請求項33に記載の製造方法。35. The step of binding the polymerization initiator,
34. The method according to claim 33, further comprising a step of bonding a polymerization initiator to the interleaf film before the step of integrally bonding the interleaf film to at least a part of the polymerizable electrode active material.
前記インターリーフ膜に前記重合開始剤を含浸させる工
程を有する請求項35に記載の製造方法。36. The step of binding the polymerization initiator,
The method according to claim 35, further comprising a step of impregnating the interleaf film with the polymerization initiator.
硬化させる工程が、前記電極活物質と前記重合開始剤と
を、紫外線、赤外線、熱エネルギーおよび電子ビームの
少なくとも一つに曝すことによって硬化させる工程を有
する請求項33に記載の製造方法。37. The step of at least partially curing the electrode active material comprises curing the electrode active material and the polymerization initiator by exposing the same to at least one of ultraviolet light, infrared light, heat energy, and an electron beam. The production method according to claim 33, comprising a step.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US90503097A | 1997-08-01 | 1997-08-01 | |
US08/905030 | 1997-08-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11120994A true JPH11120994A (en) | 1999-04-30 |
Family
ID=25420192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10230008A Withdrawn JPH11120994A (en) | 1997-08-01 | 1998-07-31 | Electrode having interleaf film and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11120994A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10950838B2 (en) | 2017-12-19 | 2021-03-16 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US10957941B2 (en) | 2017-12-19 | 2021-03-23 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11038208B2 (en) | 2017-12-19 | 2021-06-15 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11094997B2 (en) | 2017-05-29 | 2021-08-17 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11158907B2 (en) | 2017-12-19 | 2021-10-26 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11158883B2 (en) | 2017-12-19 | 2021-10-26 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11205799B2 (en) | 2017-12-19 | 2021-12-21 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
-
1998
- 1998-07-31 JP JP10230008A patent/JPH11120994A/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11094997B2 (en) | 2017-05-29 | 2021-08-17 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US10950838B2 (en) | 2017-12-19 | 2021-03-16 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US10957941B2 (en) | 2017-12-19 | 2021-03-23 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11038208B2 (en) | 2017-12-19 | 2021-06-15 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11158907B2 (en) | 2017-12-19 | 2021-10-26 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11158883B2 (en) | 2017-12-19 | 2021-10-26 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
US11205799B2 (en) | 2017-12-19 | 2021-12-21 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery |
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