JPS6129067A - Alkaline cell - Google Patents
Alkaline cellInfo
- Publication number
- JPS6129067A JPS6129067A JP15043584A JP15043584A JPS6129067A JP S6129067 A JPS6129067 A JP S6129067A JP 15043584 A JP15043584 A JP 15043584A JP 15043584 A JP15043584 A JP 15043584A JP S6129067 A JPS6129067 A JP S6129067A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- soluble nylon
- powder
- water
- alkaline
- 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.)
- Granted
Links
Classifications
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
-
- 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
- H01M4/06—Electrodes for primary cells
- H01M4/08—Processes of manufacture
- H01M4/12—Processes of manufacture of consumable metal or alloy electrodes
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明はアルカリ電池に関し、詳しくは負極粉末亜鉛
用のゲル化剤の材質を改良することで、その性能向上を
図ったアルカリ電池に関するものである。[Detailed Description of the Invention] <Industrial Application Field> This invention relates to an alkaline battery, and more specifically to an alkaline battery whose performance is improved by improving the material of the gelling agent for negative electrode powder zinc. be.
〈従来の技術〉
アルカリ電池は負極にゲル化剤とアルカリ電解液とによ
ってゲル化させた粉末ＩＦ鉛を用いているため、亜鉛の
表面積が茗しく増大して電池の放電性能が向上するので
、高負荷用電池どしてその需要は多い。しかしながら、
このように性能のよいアルカリ電池にも、負極に含まれ
るアルカリ電解液のクリープによって漏液しゃずいとい
う欠点がある。このようなりリープに起因する漏液を防
いで電池の保存性能を高めるため、現用のアルカリ電池
ではパツキンやガスケットなどの封口剤の材質を正極缶
や負極端子板との密着性のにいものにしたり、あるいは
封口部の形状や構造を種々工夫している。<Conventional technology> Since alkaline batteries use powdered IF lead gelled with a gelling agent and an alkaline electrolyte for the negative electrode, the surface area of zinc increases dramatically and the discharge performance of the battery improves. Demand for high-load batteries is high. however,
Even alkaline batteries with such good performance have the disadvantage of leakage due to creep of the alkaline electrolyte contained in the negative electrode. In order to prevent such leakage caused by leakage and improve the storage performance of batteries, in current alkaline batteries, sealants such as gaskets and gaskets are made of a material that is hard to adhere to the positive electrode can and negative terminal plate. In addition, various improvements have been made to the shape and structure of the sealing part.
〈発明が解決しようとする問題点〉
ところで、負極に用いられるゲル化剤としては、ゲル強
度が高く、作業性の良いＣＭＣが中心であるが、ＣＭＣ
はアルカリ電解液と混合された直後においてはアルカリ
電解液を吸収して膨潤した状態にあるものの、漸次アル
カリ電解液をはなづ性質があるため、ゲル化剤とｌノで
ＣＭＣを用いた場合には保存中にアルカリ電解液とＣＭ
Ｃが分離する所謂ｔｉｌｌ漿現象が生じる。<Problems to be solved by the invention> By the way, as a gelling agent used for the negative electrode, CMC is mainly used because it has high gel strength and good workability.
Immediately after being mixed with an alkaline electrolyte, CMC absorbs the alkaline electrolyte and is in a swollen state, but it gradually releases the alkaline electrolyte, so when CMC is used with a gelling agent. contains alkaline electrolyte and CM during storage.
A so-called till plasma phenomenon occurs in which C is separated.
そして、前駆現象によりＣＭＧより分前したアルカリ電
解液により上記クリープの度合いが強まるから、月日剤
や１１口部を如何に工夫しＪ：うとも、保存中の漏液を
完全に防ぐことができないのが現状である。Furthermore, due to the precursor phenomenon, the degree of creep increases due to the alkaline electrolyte that is released before the CMG, so no matter how much you devise the aging agent or the 11 mouth part, it is not possible to completely prevent leakage during storage. is the current situation.
この発明は以上のような従来技術の問題点を解決し、ア
ルカリ電池の耐漏液特性を改善し、その保存特性を向上
させることを目的とする。The object of the present invention is to solve the problems of the prior art as described above, improve the leakage resistance characteristics of alkaline batteries, and improve their storage characteristics.
〈問題点を解決するための手段〉
本発明者は、グル化剤の材質を改良することによりアル
カリ電池の保存中の漏液をなくすことに着目し、ＣＭＣ
に代わるゲル化剤について種々の研究を小ねた結果、水
溶性ナイロン粉末をゲル化剤として用いた場合には、Ｃ
ＭＣに匹敵するゲル強度を持つが故に作業性がよいと共
に、保存中に鯉１漿現象ににるアルカリ電解液の分離が
ほとんど起らないことを類１ｑシ、この発明を完成する
に至ったのである。<Means for solving the problem> The present inventor focused on eliminating leakage during storage of alkaline batteries by improving the material of the gluing agent, and developed CMC.
As a result of various studies on alternative gelling agents, we found that when water-soluble nylon powder is used as a gelling agent, C
As it has a gel strength comparable to that of MC, it is easy to work with, and the separation of the alkaline electrolyte that occurs during storage hardly occurs during storage, leading to the completion of this invention. It is.
即ち、この発明のアルカリ電池は、負極としてグル化さ
せた粉末亜鈴を用いるアルカリ電池において、粉末亜鉛
のゲル化剤として水溶性ナイロン粉末を使用したことを
要旨とする。そして、水溶性ナイロン粉末の使用量とし
ては、粉末亜鉛１００重帛部に対して１〜７重量部の範
囲が最適であることが本発明者の実験により確認されて
いる。That is, the alkaline battery of the present invention uses water-soluble nylon powder as a gelling agent for powdered zinc in an alkaline battery using glued powdered dumbbell as a negative electrode. The inventor's experiments have confirmed that the optimal amount of water-soluble nylon powder to be used is in the range of 1 to 7 parts by weight per 100 parts by weight of powdered zinc.
〈作 用〉
つまり、吸水性〈吸アルカリ電解液性）が良く、しかも
長期に亘る保存においてもｌｌ１ｌ漿現象はない水溶性
ナイロン粉末をゲル化剤として用いることで、負極にお
けるゲル強度が安定に保持され、この結果として、アル
カリ電池の耐漏液及び保存特性の向上を図れる訳である
。<Function> In other words, by using water-soluble nylon powder as a gelling agent, which has good water absorption (alkali-absorbing electrolyte properties) and does not cause any sludge phenomenon even during long-term storage, the gel strength at the negative electrode is stabilized. As a result, the leakage resistance and storage characteristics of the alkaline battery can be improved.
〈実施例〉
第１図に示すこの発明をボタン型アルカリ電池に適用し
た実施例において、１，２はそれぞれステンレス鋼製の
正極缶、負極端子板、３はポリプロピレンやナイロンな
どの合成樹脂からできた環状のガスケット、４は例えば
二酸化マンガンに導電剤や結着剤を混ぜてなる正極合剤
、５はポリプロピレン、セロハンなどからなるセパレー
タ、６は粉末用（鉛をアルカリ電解液と水溶性ナイロン
粉末とによりゲル化してなる負極である。<Example> In the example shown in Fig. 1 in which the present invention is applied to a button-type alkaline battery, 1 and 2 are respectively made of a positive electrode can and a negative electrode terminal plate made of stainless steel, and 3 is made of a synthetic resin such as polypropylene or nylon. 4 is a positive electrode mixture made of manganese dioxide mixed with a conductive agent and a binder, 5 is a separator made of polypropylene, cellophane, etc., and 6 is for powder (lead is mixed with an alkaline electrolyte and water-soluble nylon powder). The negative electrode is formed by gelation.
上記のような水溶性ナイロン粉末をゲル化剤とする０極
６を作る方法としては、まず粉末亜鉛と水ｍｅｎナイロ
ン粉末（例えば、東しＡＱ−ナイロン）を所定比率で混
合し、次にこの混合物を負極端子内に秤取し、爾後、ア
ルカリ電解液を注入してゲル化させる方法を用いる。To make 0 pole 6 using water-soluble nylon powder as a gelling agent, first mix powdered zinc and water-soluble nylon powder (for example, Toshi AQ-nylon) in a predetermined ratio, and then mix this powder. A method is used in which the mixture is weighed into a negative electrode terminal, and then an alkaline electrolyte is injected to form a gel.
次に粉末亜鉛と水溶性ナイロンとの混合比率であるが、
本発明者の実験によれば、粉末亜鉛１００重量部に対し
て水溶性ナイロン粉末１〜７重量部を使用した場合が最
適であることがわかった。つまり、水溶性ナイロン粉未
使用吊が１重量部より少ないとゲル強度が不十分になる
から作業性が悪化する。且つ、水溶性ナイロン粉末によ
るアルカリ電解液の保持が不十分となるので漏液の発生
率が激増する。一方、水溶性ナイロン粉末自体は絶縁物
なので、使用量が７ｖ聞部を越えると電池の内部抵抗が
急増して電池放電性能低下の原因となる。Next is the mixing ratio of powdered zinc and water-soluble nylon.
According to experiments conducted by the present inventor, it was found that it is optimal to use 1 to 7 parts by weight of water-soluble nylon powder per 100 parts by weight of powdered zinc. In other words, if the amount of unused water-soluble nylon powder is less than 1 part by weight, the gel strength will be insufficient and workability will deteriorate. In addition, the alkaline electrolyte is insufficiently retained by the water-soluble nylon powder, resulting in a sharp increase in the rate of leakage. On the other hand, since the water-soluble nylon powder itself is an insulator, if the amount used exceeds 7V, the internal resistance of the battery will increase sharply, causing a decrease in battery discharge performance.
上記の実験結果を第２図に示す。第２図において、実線
は電池を製造後に温度６０℃、相対温度９０％の条件下
で１００日間貯蔵した時の漏液発生率（％）を、水溶性
ナイロン粉末含有率（粉末亜鉛１００重量部に対する重
量％）を変えた場合について各々測定し、その結果を示
したものである。また、点線は同じ（水溶性ナイロン粉
末含有率を変化させた場合の電池の内部抵抗（Ω）の変
化を各々測定し、その結果を示したものである。この結
果から、水溶性ナイロン粉末の含有率が１〜７重銀％（
重量部）の範囲では漏液発生をほぼなくすことができる
と共に内部抵抗を低く抑えることができることが明らか
である。The above experimental results are shown in FIG. In Figure 2, the solid line indicates the leakage rate (%) when the battery is stored for 100 days at a temperature of 60°C and a relative temperature of 90% after manufacturing, and the water-soluble nylon powder content (100 parts by weight of zinc powder). The results are shown for each case where the weight percentage (% by weight) was changed. In addition, the dotted lines show the results of measuring the changes in the internal resistance (Ω) of the battery when changing the water-soluble nylon powder content.From these results, it can be seen that the water-soluble nylon powder The content is 1-7% heavy silver (
It is clear that within the range of (parts by weight), leakage can be almost eliminated and internal resistance can be kept low.
また、水溶性ナイロン粉末の粒径であるが、本発明者の
実験によれば８Ｑｓ＋ｅｓｈ ｏｎ、 １００ｍｅｓｈ
ｐａｓｓｌ！ｊｌｉのものがその分散状態がよく、ゲル
化剤用としては最適であることが知得されている。In addition, the particle size of the water-soluble nylon powder is 8Qs+esh on, 100mesh according to the inventor's experiment.
Pass! It is known that the compound of JLI has a good dispersion state and is most suitable for use as a gelling agent.
〈発明の効果〉
この発明のアルカリ電池は、吸水性が良く、長期に回る
保存においても離漿現蒙のない水溶性ナイロン粉末をゲ
ル化剤として使用したので、電池の耐漏液特性、並びに
保存特性が向上するという優れた効果を奏する。<Effects of the Invention> The alkaline battery of the present invention uses water-soluble nylon powder as a gelling agent, which has good water absorption and does not cause syneresis even during long-term storage, so that the battery has excellent leakage resistance and storage properties. It has the excellent effect of improving properties.
第１図はこの発明の実施例を示した断面図、第２図は水
溶性ナイロン粉末の含有率を変えた場合の電池の漏液発
生率及び内部抵抗の変化を示したグラフである。
１・・・止棒ｍ１２・・・負極端子板、４・・・正極合
剤、６・・・負極。
特許出願人 富士電気化学株式会社代 理 人
尾 股 行 川向
荒 木 友之助第１図
第２図FIG. 1 is a sectional view showing an example of the present invention, and FIG. 2 is a graph showing changes in leakage rate and internal resistance of a battery when the content of water-soluble nylon powder is changed. DESCRIPTION OF SYMBOLS 1... Stopper bar m12... Negative electrode terminal plate, 4... Positive electrode mixture, 6... Negative electrode. Patent applicant: Fuji Electrochemical Co., Ltd. Representative: Yuki Omata Kawamukai
Tomonosuke ArakiFigure 1Figure 2
Claims (1)
電池において、該粉末亜鉛のゲル化剤として水溶性ナイ
ロン粉末を使用することを特徴とするアルカリ電池。 ２、該粉末亜鉛１００重量部に対して水溶性ナイロン粉
末１〜７重量部を使用することを特徴とする特許請求の
範囲第１項記載のアルカリ電池。[Scope of Claims] 1. An alkaline battery using gelled powdered zinc as a negative electrode, characterized in that water-soluble nylon powder is used as a gelling agent for the powdered zinc. 2. The alkaline battery according to claim 1, wherein 1 to 7 parts by weight of water-soluble nylon powder is used for 100 parts by weight of the zinc powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15043584A JPS6129067A (en) | 1984-07-19 | 1984-07-19 | Alkaline cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15043584A JPS6129067A (en) | 1984-07-19 | 1984-07-19 | Alkaline cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6129067A true JPS6129067A (en) | 1986-02-08 |
| JPH0518223B2 JPH0518223B2 (en) | 1993-03-11 |
Family
ID=15496864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15043584A Granted JPS6129067A (en) | 1984-07-19 | 1984-07-19 | Alkaline cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6129067A (en) |
-
1984
- 1984-07-19 JP JP15043584A patent/JPS6129067A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0518223B2 (en) | 1993-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |