JP2000173658A - Glue, adhesive or adhesive tape sheet for battery - Google Patents
Glue, adhesive or adhesive tape sheet for batteryInfo
- Publication number
- JP2000173658A JP2000173658A JP10342425A JP34242598A JP2000173658A JP 2000173658 A JP2000173658 A JP 2000173658A JP 10342425 A JP10342425 A JP 10342425A JP 34242598 A JP34242598 A JP 34242598A JP 2000173658 A JP2000173658 A JP 2000173658A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- adhesive
- sensitive adhesive
- battery
- adhesive tape
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池内部、特に電
池電解液に接する又は接する可能性のある部分に好適に
用いることができる電池用接着剤又は粘着剤もしくは粘
着テープ・シート（以下、これらをまとめて単に接着剤
もしくは粘着テープということがある。）に関する。BACKGROUND OF THE INVENTION The present invention relates to a battery adhesive or pressure-sensitive adhesive or pressure-sensitive adhesive tape / sheet (hereinafter, referred to as a battery) which can be suitably used in a battery, particularly in a portion which may or may be in contact with a battery electrolyte. May be simply referred to as an adhesive or a pressure-sensitive adhesive tape.)
【０００２】[0002]
【発明が解決しようとする課題】電池内部には、その製
造工程上、接着剤や粘着テープが多用されており、これ
らの構成材料は、主に被着体との接着性などを考慮して
選択されている。特にリチウム塩を支持電解質として用
いる非水電解液系の電池系内においては、通常、プロト
ンを供与する素材の使用は好まれない。 これは、プロ
トンを供与する素材が電池系内に存在すると電解液中の
リチウム塩に作用して、フッ化物あるいはオキシフッ化
物が形成され、電池の内圧上昇や電池部材の腐食等を引
き起こすためとされている。しかし最近、このフッ化物
あるいはオキシフッ化物が形成されることにより、電極
集電体の劣化を抑制する効果が報告されている。 これ
は例えば、正極の集電体として多く用いられているアル
ミ金属において、電池系内でフッ化物あるいはオキシフ
ッ化物によりその表面に不動態皮膜が形成され、酸化雰
囲気下においても安定化するためであると考えられてい
る。本来、電解液中に残存する微量水分や電池組み立て
工程において混入する微量水分によってもフッ化物ある
いはオキシフッ化物が形成されるが、これらの水分量は
常に安定なものではなく、結果として形成されるフッ化
物あるいはオキシフッ化物量も一定ではなかった。ま
た、LiCF3SO3やLi(CF3SO2)2Nに代表されるフッ素含有有
機系の電解質は安定なC-F結合から構成され、他の無機
系の電解質に比べて安定していることから、形成するフ
ッ化物やオキシフッ化物量が少なくなるとされている。In the manufacturing process, adhesives and pressure-sensitive adhesive tapes are frequently used inside the battery, and these constituent materials are mainly used in consideration of the adhesion to the adherend and the like. Selected. In particular, in a non-aqueous electrolyte-based battery system using a lithium salt as a supporting electrolyte, the use of a material that donates a proton is generally not preferred. This is because, if a material that donates protons is present in the battery system, it acts on the lithium salt in the electrolyte to form fluoride or oxyfluoride, which causes an increase in the internal pressure of the battery and corrosion of the battery members. ing. However, recently, an effect of suppressing the deterioration of the electrode current collector due to the formation of the fluoride or the oxyfluoride has been reported. This is because, for example, in aluminum metal, which is often used as a current collector for the positive electrode, a passivation film is formed on the surface of the battery by fluoride or oxyfluoride in the battery system and is stabilized even in an oxidizing atmosphere. It is believed that. Originally, fluoride or oxyfluoride is also formed by trace water remaining in the electrolyte or mixed in the battery assembling process, but the amount of these waters is not always stable, and the amount of formed fluoride is not always stable. The amount of the compound or oxyfluoride was not constant. In addition, fluorine-containing organic electrolytes represented by LiCF 3 SO 3 and Li (CF 3 SO 2 ) 2 N are composed of stable CF bonds, and are more stable than other inorganic electrolytes. , The amount of fluoride or oxyfluoride to be formed is reduced.
【０００３】[0003]
【課題を解決するための手段】そこで本発明者らは、安
定的にフッ化物あるいはオキシフッ化物を形成させるた
め、水分を供与するのと同じ効果のあるプロトンを供与
する能力がある素材を電池系内で使用することを検討し
た。 プロトンを供与する能力を有する素材は多くある
が、電池系内で使用する部材のほとんどは電池反応系に
関与するものであり、プロトンを供与することによる素
材の劣化や機能低下が起こり、電池反応系での役割に影
響するなどの弊害があるため好ましくない。 また、容
量の関係上、電池系内に電池反応系に関与する以外の部
材をプロトンを供与する目的のために持ち込むことは好
まれない。ここで電池系内には、その組み立て工程の効
率化のために、多くの接着剤及び粘着テープが用いられ
ているが、多くは仮止めなど組み立て後はその役割を終
えるものが多い。そこで本発明者らは、これら接着剤や
粘着テープにプロトンを供与する能力を与えることによ
り、特別に電池系内に部材を添加することなく、安定に
フッ化物あるいはオキシフッ物を形成させることができ
ることを見出し、本発明に至ったものである。In order to stably form fluoride or oxyfluoride, the inventors of the present invention have proposed a battery system having the ability to donate protons having the same effect as donating water. Considered to be used within. Although many materials have the ability to donate protons, most of the components used in the battery system are involved in the battery reaction system. It is not preferable because it has adverse effects such as affecting the role in the system. Also, due to the capacity, it is not preferable to bring members other than those involved in the battery reaction system into the battery system for the purpose of donating protons. Here, many adhesives and pressure-sensitive adhesive tapes are used in the battery system to increase the efficiency of the assembling process, but in many cases, the role such as temporary fixing ends after assembly. Therefore, the present inventors have made it possible to stably form fluoride or oxyfluoride by adding the ability to donate protons to these adhesives and pressure-sensitive adhesive tapes, without adding a special member in the battery system. And have led to the present invention.
【０００４】即ち本発明は、リチウム塩を支持電解質と
する非水電解液系の電池系内に用いられる接着剤又は粘
着剤、もしくはこれらが基材に設けられた粘着テープ・
シートであって、該接着剤又は粘着剤もしくは粘着テー
プ・シートがプロトンを供与可能であることを特徴とす
る電池用接着剤又は粘着剤もしくは粘着テープ・シート
を提供する。That is, the present invention relates to an adhesive or pressure-sensitive adhesive used in a non-aqueous electrolyte-based battery system using a lithium salt as a supporting electrolyte, or a pressure-sensitive adhesive tape or
Provided is an adhesive or pressure-sensitive adhesive or pressure-sensitive adhesive tape / sheet for a battery, wherein the adhesive or pressure-sensitive adhesive or pressure-sensitive adhesive tape / sheet is capable of donating a proton.
【０００５】[0005]
【発明の実施の形態】本発明の電池用接着剤又は粘着剤
に用いる具体的な構成材料は、それらを電池系内に使用
した際にプロトンを供与できるものである限り特に限定
されないが、例えばアクリル酸などの官能基を含有する
アクリル系接着剤又は粘着剤が好ましく、より具体的に
は、例えばアクリル酸ブチル、アクリル酸２−エチルヘ
キシルなどのアクリル主モノマーとアクリル酸、アクリ
ル酸ヒドロキシルエチルなどの官能基含有モノマーとの
共重合体をイソシアネートなどの架橋剤で架橋したもの
が挙げられる。また、カルボキシル基やヒドロキシル基
などの官能基を持つ粘着付与樹脂、例えば、ロジン系、
テルペン−フェノール系、フェノール系などの粘着付与
樹脂を配合したゴム系接着剤又は粘着剤なども好まし
い。BEST MODE FOR CARRYING OUT THE INVENTION The specific constituent materials used for the battery adhesive or pressure-sensitive adhesive of the present invention are not particularly limited as long as they can provide protons when used in a battery system. Acrylic adhesives or pressure-sensitive adhesives containing functional groups such as acrylic acid are preferred, and more specifically, for example, butyl acrylate, acrylic main monomers such as 2-ethylhexyl acrylate and acrylic acid, hydroxylethyl acrylate and the like Examples thereof include those obtained by crosslinking a copolymer with a functional group-containing monomer with a crosslinking agent such as isocyanate. Further, a tackifying resin having a functional group such as a carboxyl group or a hydroxyl group, for example, a rosin-based resin,
A rubber-based adhesive or pressure-sensitive adhesive containing a terpene-phenol-based or phenol-based tackifier resin is also preferable.
【０００６】また本発明は、基材の少なくとも片面に粘
着剤層を設けた粘着テープ・シートがプロトン供与可能
なものも提供する。 この場合、粘着テープとしてプロ
トン供与可能であればよく、例えば上記のプロトン供与
可能な粘着剤を用いる場合の基材は特に限定されず、例
えば、ポリプロピレン、ポリイミド、ポリフェニレンサ
ルファイド、ポリエチレンテレフタレート、ポリビニル
アルコール、エチレン−アクリル酸共重合体、エチレン
−メタクリル酸共重合体などの無延伸あるいは延伸樹脂
フィルムが挙げられる。 本発明においては、特にポリ
マーの構造中にカルボキシル基やヒドロキシル基をもつ
ポリビニルアルコール、エチレン−アクリル酸共重合
体、エチレン−メタクリル酸共重合体などのプロトン供
与可能な素材からなる樹脂フィルムが好ましく、これら
を用いる場合は、粘着剤は特に限定されない。The present invention also provides a pressure-sensitive adhesive tape / sheet provided with a pressure-sensitive adhesive layer on at least one surface of a substrate, capable of donating protons. In this case, the pressure-sensitive adhesive tape may be capable of donating a proton, and for example, the substrate when the above-described proton-donating pressure-sensitive adhesive is used is not particularly limited.For example, polypropylene, polyimide, polyphenylene sulfide, polyethylene terephthalate, polyvinyl alcohol, Non-stretched or stretched resin films such as ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer are exemplified. In the present invention, in particular, a polyvinyl alcohol having a carboxyl group or a hydroxyl group in the structure of the polymer, a resin film made of a material capable of donating a proton such as an ethylene-acrylic acid copolymer and an ethylene-methacrylic acid copolymer is preferable, When these are used, the pressure-sensitive adhesive is not particularly limited.
【０００７】なお、本発明の電池用接着剤もしくは粘着
テープの電池系内へのプロトン供与によるフッ化物又は
オキシフッ化物の形成は、後述の実施例における電解液
発色試験にて評価することができる。[0007] The formation of fluoride or oxyfluoride by donating protons into the battery system of the battery adhesive or pressure-sensitive adhesive tape of the present invention can be evaluated by an electrolytic solution coloring test in Examples described later.
【０００８】[0008]
【実施例】以下、本発明を実施例によりさらに詳しく説
明するが、本発明はこれらに何ら限定されるものではな
い。 実施例１〜５、比較例１〜２ 表１及び２に示す組成の粘着剤及び粘着テープを得、こ
れらの接着力、電解液変色性を以下の方法で評価し、そ
の結果を併せて表１及び２に示す。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. Examples 1 to 5 and Comparative Examples 1 and 2 Adhesives and adhesive tapes having the compositions shown in Tables 1 and 2 were obtained, and their adhesive strength and electrolytic solution discoloration were evaluated by the following methods. 1 and 2.
【０００９】[0009]
【表１】 [Table 1]
【００１０】[0010]
【表２】 [Table 2]
【００１１】〔接着力〕延伸ポリプロピレン（ＯＰＰ）
フィルム（厚さ３０μｍ）に、得られた接着剤又は粘着
剤を３０μｍ厚で塗布したものを、ステンレス板に貼り
合わせ、フィルムを１８０°ピールにて引き剥がした時
の荷重を測定した。[Adhesive strength] Oriented polypropylene (OPP)
A film (30 μm thick) coated with the obtained adhesive or pressure-sensitive adhesive at a thickness of 30 μm was bonded to a stainless steel plate, and the load when the film was peeled off at 180 ° peel was measured.
【００１２】〔電解液変色性（電解液発色試験）〕溶媒
（電解液）としての、エチレンカーボネート（ＥＣ）：
ジメチルカーボネート（ＤＭＣ）：ジエチルカーボネー
ト（ＤＥＣ）＝１：１：１（体積比）に、溶質（電解
質）として６フッ化リン酸リチウム（ＬｉＰＦ6 ）を１
mol/dm3 添加してなる電解液に、十分に乾燥したサンプ
ルを、アルゴン置換した環境下でサンプル：電解液＝
１：２００（重量比）にて添加、密閉した。 そして６
０℃にて１週間保存後、電解液の発色度合いをサンプル
を添加していない電解液をブランクとして、目視にて比
較した。[Electrolyte Discoloration (Electrolyte Color Test)] Ethylene carbonate (EC) as a solvent (electrolyte):
Dimethyl carbonate (DMC): diethyl carbonate (DEC) = 1: 1: 1: 1 (volume ratio) and lithium hexafluorophosphate (LiPF 6 ) as a solute (electrolyte)
A sample that has been sufficiently dried is added to the electrolyte solution containing mol / dm 3 under an atmosphere replaced with argon.
1: 200 (weight ratio) was added and sealed. And 6
After storage at 0 ° C. for one week, the degree of color development of the electrolyte was visually compared using the electrolyte without the sample as a blank.
【００１３】[0013]
【発明の効果】本発明の電池用接着剤又は粘着剤もしく
は粘着テープ・シートは、それらに本来要求される接着
及び粘着特性を満たしながら、かつ電池系内でプロトン
を供与できるため、結果的に電池特性に悪影響を及ぼさ
ないという効果があり、特性及び信頼性の高い電池を作
成できるという利点がある。The adhesive or pressure-sensitive adhesive or pressure-sensitive adhesive tape / sheet of the present invention can provide protons in the battery system while satisfying the adhesive and pressure-sensitive properties originally required for them, and as a result, There is an effect that the battery characteristics are not adversely affected, and there is an advantage that a battery with high characteristics and high reliability can be manufactured.
フロントページの続き Ｆターム(参考） 5H003 AA08 BA00 BB11 5H014 AA06 BB08 EE01 5H022 AA09 BB12 EE06 KK07 5H029 AJ14 AJ15 AK00 AL00 AM01 AM07 CJ05 EJ11 Continued on the front page F term (reference) 5H003 AA08 BA00 BB11 5H014 AA06 BB08 EE01 5H022 AA09 BB12 EE06 KK07 5H029 AJ14 AJ15 AK00 AL00 AM01 AM07 CJ05 EJ11
Claims (4)
液系の電池系内に用いられる接着剤又は粘着剤、もしく
はこれらが基材に設けられた粘着テープ・シートであっ
て、該接着剤又は粘着剤もしくは粘着テープ・シートが
プロトンを供与可能であることを特徴とする電池用接着
剤又は粘着剤もしくは粘着テープ・シート。1. An adhesive or pressure-sensitive adhesive used in a non-aqueous electrolyte-based battery system using a lithium salt as a supporting electrolyte, or a pressure-sensitive adhesive tape / sheet provided with these on a base material, wherein said adhesive Or an adhesive or pressure-sensitive adhesive or pressure-sensitive adhesive tape / sheet for a battery, wherein the pressure-sensitive adhesive or pressure-sensitive adhesive tape / sheet is capable of donating a proton.
クリル系であることを特徴とする電池用接着剤又は粘着
剤もしくは粘着テープ・シート。2. The adhesive or pressure-sensitive adhesive or pressure-sensitive adhesive tape or sheet for a battery according to claim 1, wherein the adhesive or pressure-sensitive adhesive according to claim 1 is acrylic.
ルボキシル基又は／及びヒドロキシル基を持つ樹脂が配
合されたものであることを特徴とする電池用接着剤又は
粘着剤もしくは粘着テープ・シート。3. The adhesive or the pressure-sensitive adhesive for a battery according to claim 1, wherein the adhesive or the pressure-sensitive adhesive is a resin having a carboxyl group and / or a hydroxyl group. Sheet.
材が、カルボキシル基又は／及びヒドロキシル基を持つ
樹脂フィルムであることを特徴とする電池用粘着テープ
・シート。4. The pressure-sensitive adhesive tape / sheet for a battery according to claim 1, wherein the substrate of the pressure-sensitive adhesive tape / sheet is a resin film having a carboxyl group and / or a hydroxyl group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10342425A JP2000173658A (en) | 1998-12-02 | 1998-12-02 | Glue, adhesive or adhesive tape sheet for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10342425A JP2000173658A (en) | 1998-12-02 | 1998-12-02 | Glue, adhesive or adhesive tape sheet for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000173658A true JP2000173658A (en) | 2000-06-23 |
Family
ID=18353645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10342425A Pending JP2000173658A (en) | 1998-12-02 | 1998-12-02 | Glue, adhesive or adhesive tape sheet for battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000173658A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003168411A (en) * | 2001-12-04 | 2003-06-13 | Hitachi Maxell Ltd | Nonaqueous secondary battery |
| JP2013064086A (en) * | 2011-09-20 | 2013-04-11 | Nitto Denko Corp | Self-adhesive tape for battery |
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|---|---|---|---|---|
| JPS6451004A (en) * | 1987-08-21 | 1989-02-27 | Sugawara Ind | Tacky adhesive tape for sowing |
| JPH04342959A (en) * | 1991-05-21 | 1992-11-30 | Matsushita Electric Ind Co Ltd | Battery with organic electrolyte |
| JPH05182650A (en) * | 1991-12-27 | 1993-07-23 | Yuasa Corp | Thin type battery |
| JPH05182647A (en) * | 1991-12-28 | 1993-07-23 | Sony Corp | Nonaqueous electrolyte secondary battery |
| JPH09293537A (en) * | 1996-04-25 | 1997-11-11 | Seiko Instr Kk | Nonaqueous electrolyte secondary battery and manufacture thereof |
| JPH1012277A (en) * | 1996-06-21 | 1998-01-16 | Shin Kobe Electric Mach Co Ltd | Nonaqueous electrolyte battery |
| JPH1060390A (en) * | 1996-08-26 | 1998-03-03 | Kuraray Co Ltd | Horticultural pressure-sensitive adhesive tape |
| JPH1074538A (en) * | 1996-08-30 | 1998-03-17 | Hitachi Maxell Ltd | Lithium ion secondary battery |
| JPH10144298A (en) * | 1996-11-15 | 1998-05-29 | Sanyo Electric Co Ltd | Lithium secondary battery |
| JPH10241744A (en) * | 1997-02-25 | 1998-09-11 | Japan Storage Battery Co Ltd | Nonaqueous electrolyte secondary battery |
| JPH10247503A (en) * | 1997-03-05 | 1998-09-14 | Nitto Denko Corp | Adhesive or pressure sensitive adhesive or pressure sensitive adhesive tape sheet to fasten battery element |
| JPH10247489A (en) * | 1997-03-05 | 1998-09-14 | Nitto Denko Corp | Adhesive tape or sheet for preventing internal short circuit of battery |
| JPH10302802A (en) * | 1997-04-25 | 1998-11-13 | Matsushita Electric Ind Co Ltd | Storage battery electrode and manufacture thereof |
-
1998
- 1998-12-02 JP JP10342425A patent/JP2000173658A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6451004A (en) * | 1987-08-21 | 1989-02-27 | Sugawara Ind | Tacky adhesive tape for sowing |
| JPH04342959A (en) * | 1991-05-21 | 1992-11-30 | Matsushita Electric Ind Co Ltd | Battery with organic electrolyte |
| JPH05182650A (en) * | 1991-12-27 | 1993-07-23 | Yuasa Corp | Thin type battery |
| JPH05182647A (en) * | 1991-12-28 | 1993-07-23 | Sony Corp | Nonaqueous electrolyte secondary battery |
| JPH09293537A (en) * | 1996-04-25 | 1997-11-11 | Seiko Instr Kk | Nonaqueous electrolyte secondary battery and manufacture thereof |
| JPH1012277A (en) * | 1996-06-21 | 1998-01-16 | Shin Kobe Electric Mach Co Ltd | Nonaqueous electrolyte battery |
| JPH1060390A (en) * | 1996-08-26 | 1998-03-03 | Kuraray Co Ltd | Horticultural pressure-sensitive adhesive tape |
| JPH1074538A (en) * | 1996-08-30 | 1998-03-17 | Hitachi Maxell Ltd | Lithium ion secondary battery |
| JPH10144298A (en) * | 1996-11-15 | 1998-05-29 | Sanyo Electric Co Ltd | Lithium secondary battery |
| JPH10241744A (en) * | 1997-02-25 | 1998-09-11 | Japan Storage Battery Co Ltd | Nonaqueous electrolyte secondary battery |
| JPH10247503A (en) * | 1997-03-05 | 1998-09-14 | Nitto Denko Corp | Adhesive or pressure sensitive adhesive or pressure sensitive adhesive tape sheet to fasten battery element |
| JPH10247489A (en) * | 1997-03-05 | 1998-09-14 | Nitto Denko Corp | Adhesive tape or sheet for preventing internal short circuit of battery |
| JPH10302802A (en) * | 1997-04-25 | 1998-11-13 | Matsushita Electric Ind Co Ltd | Storage battery electrode and manufacture thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003168411A (en) * | 2001-12-04 | 2003-06-13 | Hitachi Maxell Ltd | Nonaqueous secondary battery |
| JP2013064086A (en) * | 2011-09-20 | 2013-04-11 | Nitto Denko Corp | Self-adhesive tape for battery |
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