JPS5928023B2 - alkaline battery - Google Patents
alkaline batteryInfo
- Publication number
- JPS5928023B2 JPS5928023B2 JP11680476A JP11680476A JPS5928023B2 JP S5928023 B2 JPS5928023 B2 JP S5928023B2 JP 11680476 A JP11680476 A JP 11680476A JP 11680476 A JP11680476 A JP 11680476A JP S5928023 B2 JPS5928023 B2 JP S5928023B2
- Authority
- JP
- Japan
- Prior art keywords
- separator
- alkaline battery
- electrolyte
- polycarboxymethylene
- coated
- 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
Links
Classifications
-
- Y02E60/12—
Landscapes
- Cell Separators (AREA)
Description
【発明の詳細な説明】
この考案は、アルカリ電池に用いるセパレータの改良に
関するもので、電池性能の向上を図ることを目的とする
ものである。DETAILED DESCRIPTION OF THE INVENTION This invention relates to the improvement of separators used in alkaline batteries, and is aimed at improving battery performance.
従来濾紙などの天然繊維やビスコースレイヨンなどの再
生繊維よりも耐電解液性でかつ耐酸化性のセパレータと
して、ポリエチレン、ポリプロピレン、ポリアミドなど
の合成樹脂からなる不織布、織布あるいは微孔性フィル
ムを用いることが試みられている。Conventionally, nonwoven fabrics, woven fabrics, or microporous films made of synthetic resins such as polyethylene, polypropylene, and polyamide are used as separators that are more resistant to electrolytes and oxidation than natural fibers such as filter paper or recycled fibers such as viscose rayon. Attempts are being made to use it.
ところがこれらのセパレータ基材は疎水性であるため、
ポリエチレンオキサイドなどの界面姑性剤あるいはカル
ボキシメチルセルローズなどの水溶性樹力旨をセパレー
タ基材に塗布、含浸していたが、前記の界面活性剤ある
いは水溶性、樹脂は高濃度のアルカリ電解液中において
安定でなかつたり、また電解液中での耐酸化性が十分で
なく、さらに電解液に徐々に溶解するため、長期間電池
を使用していると、セパレータが次第に疎水性になつて
イオｌ伝導性が低下し、内部抵抗の増大をきたす。特に
電解液量を少量に規制したアルカリ電池では、セパレー
タの保液性の変化が短絡電流や充放電特性などの電池性
能に大きく影響する。この発明は、合成樹脂からなる不
織布、織布、微孔性フィルムなどからなるセパレータ基
材に、ポリカルボキシメチレンを塗布したセパレータを
用いることにより、前述した従来の欠点を解消したもの
である。However, since these separator base materials are hydrophobic,
The separator base material was coated and impregnated with a surfactant such as polyethylene oxide or a water-soluble resin such as carboxymethyl cellulose. In addition, the separator is not stable in the electrolyte, has insufficient oxidation resistance in the electrolyte, and gradually dissolves in the electrolyte, so if the battery is used for a long time, the separator gradually becomes hydrophobic and io Conductivity decreases and internal resistance increases. Particularly in alkaline batteries where the amount of electrolyte is regulated to a small amount, changes in the liquid retention properties of the separator greatly affect battery performance such as short circuit current and charge/discharge characteristics. The present invention solves the above-mentioned conventional drawbacks by using a separator made of a separator base material made of a synthetic resin nonwoven fabric, woven fabric, microporous film, etc. coated with polycarboxymethylene.
ポリカルボキシメチレンはフマル酸ジエチルの重合体あ
るいは無水マイレン酸の重合体を加水分解することによ
つて得られ、下記にその構造式を示すように基本分子当
り２個のカルボキシル基を有する親液性のビニル系高分
子カルボン酸である。Polycarboxymethylene is obtained by hydrolyzing a polymer of diethyl fumarate or a polymer of maleic anhydride, and as shown in the structural formula below, it is a lyophilic compound with two carboxyl groups per basic molecule. It is a vinyl polymer carboxylic acid.
亡１１：、。。：Ｉ：℃次にこの発明の実施例について
説明する。Death 11:,. . :I:°C Next, examples of the present invention will be described.
Claims (1)
シメチレンを塗布したセパレータを用いることを特徴と
するアルカリ電池。1. An alkaline battery characterized by using a separator made of a separator base material made of synthetic resin and coated with polycarboxymethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11680476A JPS5928023B2 (en) | 1976-09-28 | 1976-09-28 | alkaline battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11680476A JPS5928023B2 (en) | 1976-09-28 | 1976-09-28 | alkaline battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5341738A JPS5341738A (en) | 1978-04-15 |
| JPS5928023B2 true JPS5928023B2 (en) | 1984-07-10 |
Family
ID=14696067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11680476A Expired JPS5928023B2 (en) | 1976-09-28 | 1976-09-28 | alkaline battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5928023B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62237172A (en) * | 1986-04-07 | 1987-10-17 | Kansai Electric Power Co Inc:The | Seal ring |
-
1976
- 1976-09-28 JP JP11680476A patent/JPS5928023B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5341738A (en) | 1978-04-15 |
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