JP2799501B2 - Alkaline battery separator - Google Patents
Alkaline battery separatorInfo
- Publication number
- JP2799501B2 JP2799501B2 JP1086079A JP8607989A JP2799501B2 JP 2799501 B2 JP2799501 B2 JP 2799501B2 JP 1086079 A JP1086079 A JP 1086079A JP 8607989 A JP8607989 A JP 8607989A JP 2799501 B2 JP2799501 B2 JP 2799501B2
- Authority
- JP
- Japan
- Prior art keywords
- alkaline battery
- separator
- nonionic surfactant
- solvent
- resin
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0014—Alkaline electrolytes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Cell Separators (AREA)
Description
【発明の詳細な説明】 （１）発明の分野 本発明は、アルカリ電池用セパレータに関する。DETAILED DESCRIPTION OF THE INVENTION (1) Field of the Invention The present invention relates to an alkaline battery separator.
（２）従来技術と課題 ポリスルフォン樹脂（以下、PSと略記する）をジメチ
ルフォルムアルデヒド（以下、DMFと略記する）、ジメ
チルアセトアルデヒド等の親水性有機溶剤に溶解したド
ープ（塗料といってもよい）を、水等の非溶剤中に浸漬
すると微孔性の多孔膜が得られることは知られている。
（例えば、特公昭52−10824）。しかし、電池用セパレ
ータとしては、セパレータ・フィルムの界面抵抗が小さ
いことが必要で、従来のPS樹脂の微孔性膜をこの点にお
いて、改良することが所望されていた。(2) Prior art and problems Dope (paint) may be obtained by dissolving polysulfone resin (hereinafter abbreviated as PS) in a hydrophilic organic solvent such as dimethylformaldehyde (hereinafter abbreviated as DMF) or dimethylacetaldehyde. ) Is immersed in a non-solvent such as water to obtain a microporous porous membrane.
(For example, Japanese Patent Publication No. 52-10824). However, as a battery separator, it is necessary that the interfacial resistance of the separator film is small, and it has been desired to improve the conventional microporous membrane of PS resin in this respect.
（３）課題の解決手段 本発明者等は、ノニオン界面活性剤をドープに添加し
て、PS樹脂膜を再生する場合、上記の課題を解決し得る
ことを発見した。(3) Means for Solving the Problems The present inventors have discovered that the above problems can be solved when a PS resin film is regenerated by adding a nonionic surfactant to a dope.
本発明において有効なノニオン界面活性剤は、ソルビ
タンエステル又はアセチレングリコールのエチレンオキ
シド付加物である。ソルビタンエステル・エチレンオキ
シド付加物の例としては、ソルビタン・モノ脂肪酸エス
テル・エチレンオキシド付加物があり、商業的に入手可
能であり、又アセチレングリコールのエチレンオキシド
付加物も同様に入手可能である。Nonionic surfactants useful in the present invention are sorbitan esters or ethylene oxide adducts of acetylene glycol. Examples of sorbitan ester / ethylene oxide adducts include sorbitan / monofatty acid esters / ethylene oxide adducts, which are commercially available, and acetylene glycol ethylene oxide adducts as well.
上記の他に、ポリオキシエチレンアルキルエーテル、
ポリオキシエチレンアルキルアリルエーテル、ポリオキ
シエチレンアルキルエステル等も使用し得る。In addition to the above, polyoxyethylene alkyl ether,
Polyoxyethylene alkyl allyl ether, polyoxyethylene alkyl ester and the like can also be used.
ノニオン界面活性剤の添加量（ドライベース）は、対
PS樹脂で２％以上が適当である。The amount of nonionic surfactant added (dry base) is
2% or more is suitable for PS resin.
本発明において、ドープにノニオン界面活性剤を添加
する方法は、後処理でノニオン界面活性剤処理する方法
と比べて、工程を簡略にし得る効果を有すると共に、ド
ープ中に添加されたノニオン界面活性剤は、例えば、DM
Fに溶解されていたPS樹脂が、凝固工程において水と接
触し、溶剤の非溶剤への置換に伴なって微孔を形成する
過程にも作用して、セパレータとして好適な微孔生成効
果を与え、又、その後の後処理である乾燥処理を熱風乾
燥で行っても、一旦生成した微孔が、水分蒸発に依り影
響を受けないようにする効果を有する。In the present invention, the method of adding a nonionic surfactant to the dope has an effect of simplifying the process as compared with the method of performing the nonionic surfactant treatment in the post-treatment, and the nonionic surfactant added in the dope Is, for example, DM
The PS resin dissolved in F contacts the water in the coagulation process and acts also in the process of forming micropores with the replacement of the solvent with a non-solvent, thereby producing a micropore generation effect suitable as a separator. In addition, even if the drying process, which is a post-treatment, is performed by hot air drying, the micropores once generated have an effect of not being affected by moisture evaporation.
上記のようにノニオン界面活性剤をドープに添加する
本願発明の方法は、樹脂微孔膜を製造した後に、更に微
孔膜をノニオン界面活性剤処理する後処理に好都合であ
り、又、その後の工程において、即ち、微孔膜が電池に
組み込まれ、電解液を充填する工程において、電解液の
浸透、脱泡を促進し所望の低い界面抵抗を達成すること
を容易にする効果を有する。The method of the present invention in which a nonionic surfactant is added to a dope as described above is advantageous for a post-treatment of producing a resin microporous membrane and further treating the microporous membrane with a nonionic surfactant, and In the process, that is, in the process in which the microporous membrane is incorporated into the battery and the electrolyte is filled, it has an effect of facilitating the penetration and defoaming of the electrolyte and achieving a desired low interface resistance.
実施例 例１ ポリエステル・フィルム（100μ）の上に、ポリスル
フォン樹脂（P3500、UCC社製）15部、ソルビタンモノ脂
肪酸エステル・エチレンオキシド付加物３部、DMF82部
からなる塗料を付量（60g/m2）となるように塗布し、直
ちに水中に浸漬して、10分後、再生膜フィルムを取り出
し500Cの温水に浸漬した後、800Cで15分間熱風乾燥をし
た。Examples Example 1 A coating consisting of 15 parts of a polysulfone resin (P3500, manufactured by UCC), 3 parts of an adduct of sorbitan monofatty acid ester and ethylene oxide, and 82 parts of DMF was applied on a polyester film (100 μm) (60 g / m2). 2 ), and immediately immersed in water. After 10 minutes, the regenerated membrane film was taken out, immersed in 500 ° C warm water, and dried with hot air at 800 ° C for 15 minutes.
得られた微孔性膜は、厚さ50μ、重さ17g/m2で30％KO
H溶液中の電気抵抗値は0.3mΩ・dm2と極めて低い値であ
り、透気度は５秒/10cc以下であった。The resulting microporous membrane has a thickness of 50μ, a weight of 17g / m 2 and 30% KO
The electric resistance value in the H solution was an extremely low value of 0.3 mΩ · dm 2 , and the air permeability was 5 seconds / 10 cc or less.
電気抵抗値で1.0mΩ・dm2以下、透気度で10秒/10cc以
下がセパレータとしての目標値とされている。The target values of the separator are 1.0 mΩ · dm 2 or less in electrical resistance and 10 seconds / 10 cc or less in air permeability.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭52−10824（ＪＰ，Ａ) 特開 昭54−154036（ＪＰ，Ａ) 特開 平２−236954（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 2/16 C08J 9/28 101──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-10824 (JP, A) JP-A-54-154036 (JP, A) JP-A-2-236954 (JP, A) (58) Field (Int.Cl. 6 , DB name) H01M 2/16 C08J 9/28 101
Claims (3)
剤を親水性有機溶剤に溶解したものをドープとして、こ
れを水等の非溶剤中に浸漬して、ノニオン界面活性剤で
処理されたポリスルフォン樹脂の微孔性膜を再生するこ
とを特徴とするアルカリ電池用セパレータの製造法。1. A polysulfone resin and a nonionic surfactant dissolved in a hydrophilic organic solvent as a dope, immersed in a non-solvent such as water, and treated with a nonionic surfactant. A method for producing an alkaline battery separator, comprising regenerating a resin microporous membrane.
ル又はアセチレングリコールのエチレンオキシド付加物
を親水性有機溶剤に溶解したドープを、水等の非溶剤中
に浸漬して、ソルビタンエステル又はアセチレングリコ
ールのエチレンオキシド付加物で処理されたポリスルフ
ォン樹脂の微孔性膜を再生することを特徴とするアルカ
リ電池用セパレータの製造法。2. A polysulfone resin and a dope obtained by dissolving an ethylene oxide adduct of sorbitan ester or acetylene glycol in a hydrophilic organic solvent are immersed in a non-solvent such as water to produce an ethylene oxide adduct of sorbitan ester or acetylene glycol. Regenerating a microporous membrane of a polysulfone resin treated with a separator.
たアルカリ電池用セパレータ。3. A separator for an alkaline battery produced by the method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1086079A JP2799501B2 (en) | 1989-04-05 | 1989-04-05 | Alkaline battery separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1086079A JP2799501B2 (en) | 1989-04-05 | 1989-04-05 | Alkaline battery separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02276153A JPH02276153A (en) | 1990-11-13 |
| JP2799501B2 true JP2799501B2 (en) | 1998-09-17 |
Family
ID=13876700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1086079A Expired - Lifetime JP2799501B2 (en) | 1989-04-05 | 1989-04-05 | Alkaline battery separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2799501B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2764378B2 (en) * | 1995-01-27 | 1998-06-11 | 工業技術院長 | Nickel-hydrogen storage alloy storage battery |
| US20220344774A1 (en) * | 2019-09-20 | 2022-10-27 | Li-S Energy Limited | Flexible lithium-sulfur batteries |
-
1989
- 1989-04-05 JP JP1086079A patent/JP2799501B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02276153A (en) | 1990-11-13 |
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