JPS5826619B2 - Button silver oxide battery - Google Patents
Button silver oxide batteryInfo
- Publication number
- JPS5826619B2 JPS5826619B2 JP51126626A JP12662676A JPS5826619B2 JP S5826619 B2 JPS5826619 B2 JP S5826619B2 JP 51126626 A JP51126626 A JP 51126626A JP 12662676 A JP12662676 A JP 12662676A JP S5826619 B2 JPS5826619 B2 JP S5826619B2
- Authority
- JP
- Japan
- Prior art keywords
- anode
- silver oxide
- button
- manganese dioxide
- conductive layer
- 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
- Battery Electrode And Active Subsutance (AREA)
Description
【発明の詳細な説明】
本発明は陽極が電導材を含有しない二酸化マンガンと酸
化銀とから構成されたボタン型酸化銀電池の改良に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a button-type silver oxide battery in which the anode is composed of manganese dioxide and silver oxide containing no conductive material.
従来ボタン型酸化銀電池の陽極は酸化銀Ａｇ２Ｏを主体
とし、二酸化マンガン含有量が酸化銀に対し１０重量％
以下として、黒鉛等の導電性物質を含有させるのが一昔
通であった。The anode of conventional button-type silver oxide batteries is mainly made of silver oxide, Ag2O, and the manganese dioxide content is 10% by weight based on silver oxide.
For a while, it was customary to include a conductive substance such as graphite.
これは二酸化マンガンの利用率が酸化銀に比べ極端に悪
く、含有率を１０重量％以上にすると容量の低下が著し
い欠点があった。This has the drawback that the utilization rate of manganese dioxide is extremely poor compared to that of silver oxide, and when the content is increased to 10% by weight or more, the capacity decreases significantly.
そのために酸化銀および二酸化マンガン共導電性が極め
て悪いため、正常な容量を得るには黒鉛或は銀粉等の導
電性物質を陽極活物質内に５〜２０重量％の範囲で含有
しているが、二酸化マンガンの放電への寄与が低く容量
の低下はまぬがれない欠点を有していた。For this reason, the co-conductivity of silver oxide and manganese dioxide is extremely poor, so to obtain a normal capacity, conductive substances such as graphite or silver powder must be contained in the anode active material in an amount of 5 to 20% by weight. However, the contribution of manganese dioxide to the discharge is low and the capacity inevitably decreases.
本発明は上記の欠点を解消するものであり、上記の放電
機構を検討したところ、放電反応はセパレータと接する
陽極表面から始まり、一旦反応が始まれば、陽極の導電
性が悪くても反応は内部へ進行していくことが判明し、
これらの事実より陽極とセパレータとの間に多孔性導電
層をあらかじめ設置することにより陽極の放電反応を速
やかに進行させるようにしたものであり、以下実施例に
より詳細に説明する。The present invention solves the above-mentioned drawbacks, and after studying the above-mentioned discharge mechanism, it was found that the discharge reaction starts from the anode surface in contact with the separator, and once the reaction starts, the reaction continues internally even if the anode has poor conductivity. It turned out that it was progressing to
Based on these facts, a porous conductive layer is previously installed between the anode and the separator to allow the discharge reaction of the anode to proceed rapidly, and will be explained in detail in Examples below.
第１図は本発明の一実施例を示すボタン型酸化銀電池の
縦断面図であり、１は酸化銀粉８０部に対し二酸化マン
ガン２０部を含有し約３ｔ／ｃ４の圧力で陽極端子兼用
の電槽２の中に圧縮度型して充填した陽極、３は多孔性
の導電層、４はセロ・・ンのような半透明性膜と保液性
物質例えばナイロンの不織布よりなるセパレータ、５は
汞化亜鉛とカルボキシルメチルセルローズに力性カリウ
ム溶液を添加してペースト状にした亜鉛陰極、６は亜鉛
陰極を内包する陰極端子兼用のキャップ、Ｔは電槽２と
キャップ６との間に介在された絶縁かつ気密封口の機能
を有するガスケットである。FIG. 1 is a vertical cross-sectional view of a button-type silver oxide battery showing one embodiment of the present invention, in which 1 contains 20 parts of manganese dioxide to 80 parts of silver oxide powder and has a battery that also serves as an anode terminal at a pressure of about 3 t/c4. 3 is a porous conductive layer; 4 is a separator made of a translucent membrane such as Cero-N and a liquid-retentive material such as nylon nonwoven fabric; 5 1 is a zinc cathode made by adding a potassium solution to zinc chloride and carboxymethyl cellulose to form a paste; 6 is a cap containing the zinc cathode and also serves as a cathode terminal; T is interposed between the battery case 2 and the cap 6 This gasket has the function of insulating and airtightly sealing the opening.
電解液は亜鉛陰極５の他に陽極１、導電層３、セパレー
タ４の微孔中あるいは層間の接触面に浸透あるいは保持
されており通常３５〜４６％のカ性カリウム鼎液が使用
される。The electrolytic solution is permeated or retained in the fine pores of the zinc cathode 5, the anode 1, the conductive layer 3, and the separator 4 or the contact surfaces between the layers, and usually a 35-46% caustic potassium solution is used.
多孔性の導電層３は第２図に示す如く銀等の導電材料に
よりネツ）ａ、エキスパンドメタルｂ、又は穿孔板Ｃ等
に加工しである。As shown in FIG. 2, the porous conductive layer 3 is made of a conductive material such as silver and processed into a net (a), an expanded metal (b), or a perforated plate (C).
上記より構成されたボタン型酸化銀電池は放電開始直後
、陽極１とセパレータ４との間に多孔性の導電層３を配
置しているため電子は電槽２から導電層３を移動して陽
極１との接触面から流れ、初期より導電層３と接触する
陽極１の全面にて反応し活物質の利用率が向上する。Immediately after the start of discharge in the button-type silver oxide battery constructed as described above, since the porous conductive layer 3 is disposed between the anode 1 and the separator 4, electrons move from the battery container 2 through the conductive layer 3 and reach the anode. The anode 1 flows from the contact surface with the conductive layer 3 and reacts on the entire surface of the anode 1 in contact with the conductive layer 3 from the initial stage, improving the utilization rate of the active material.
又、陽極１に黒鉛等の導電材を含んでいないため、放電
容量が著しく増大するものとなる。Furthermore, since the anode 1 does not contain a conductive material such as graphite, the discharge capacity increases significantly.
次に本発明によるボタン型酸化銀電池と従来品の放電容
量を比較すれば下記の如くである。Next, the discharge capacity of the button-type silver oxide battery according to the present invention and a conventional product are compared as follows.
放電条件は２０℃で１５００の負荷を接続して、ｌ、Ｏ
Ｖまで放電したものである。The discharge conditions are 20°C, a load of 1500 connected, l, O
It was discharged to V.
その結果、二酸化マンガンの含有率を増加させて行くと
容量は除徐に低下する傾向にはあるが、含有率が５０重
量％まではその低下率は徐々であり、従来品と比較して
非常に優れていることが判る。As a result, as the content of manganese dioxide increases, the capacity tends to gradually decrease, but the rate of decrease is gradual until the content reaches 50% by weight, and it is very much compared to conventional products. It turns out that it is excellent.
父価格的にも酸化銀に比較して二酸化マンガンは、非常
に廉価であるため、コストダウンを計ること、ができて
多く含有させた方がよいが、使用機器によって容量を多
くしたい場合には、酸化銀量を増加させるとよいことか
ら、二酸化マンガン量を１０重量％とすれば、酸化銀の
みの陽極を用いた電池の容量差とはそれほど差がなくな
り、陽極活物質のコストダウンと容量との面から、二酸
化マンガン量を陽極の１０〜１５重量％の範囲にするこ
とが最適である。In terms of price, manganese dioxide is very cheap compared to silver oxide, so it is better to contain more to reduce costs, but if you want to increase the capacity depending on the equipment used, Since it is good to increase the amount of silver oxide, if the amount of manganese dioxide is set to 10% by weight, the difference in capacity will not be so great compared to that of a battery using an anode made only of silver oxide, which will reduce the cost of the anode active material and increase the capacity. From this point of view, it is optimal that the amount of manganese dioxide is in the range of 10 to 15% by weight of the anode.
伺、放電により二酸化マンガンは還元されたとしても酸
化銀の如く金属酸化物は銀に還元されて導電性物質に変
化するようなことがないため、還元物質が増加しても銀
による連続した導電層が形成されず、放電が進行しても
陽極による陽極缶との接触が起こりにくく、導電層によ
って電導性が維持されるし、二酸化マンガンの放電への
寄与率が高まるものである。However, even if manganese dioxide is reduced by discharge, metal oxides such as silver oxide will not be reduced to silver and changed into conductive substances, so even if the amount of reducing substances increases, continuous conduction by silver will occur. Since no layer is formed, it is difficult for the anode to come into contact with the anode can even as the discharge progresses, the conductivity is maintained by the conductive layer, and the contribution rate of manganese dioxide to the discharge increases.
尚、従来陽極の体積膨張を防ぐための機械的強度をもた
せる導電性多孔薄板とそれを上から加圧する金属製座板
を設ける技術が開発されているが、本発明は機械的強度
をもたせる必要もなく、導電層の載置による容量減を防
ぐためになるべく薄い導電効果を持たせる程度の導電層
を設ければよい。Conventionally, a technique has been developed in which a conductive porous thin plate that provides mechanical strength to prevent volume expansion of the anode and a metal seat plate that presses it from above are provided, but the present invention does not require the provision of mechanical strength. In order to prevent capacity reduction due to the placement of the conductive layer, it is sufficient to provide the conductive layer as thin as possible to provide a conductive effect.
又、陽極に過酸化銀を使用する電池においても多孔性の
導電層を用いることが提案されているが、これは過酸化
銀によるセパレータの酸化防止のためで本発明とは目的
・効果を全く異にするものである。In addition, it has been proposed to use a porous conductive layer in batteries that use silver peroxide for the anode, but this is to prevent the oxidation of the separator by silver peroxide, and the purpose and effect of this are completely different from the present invention. It makes a difference.
上記した如く本発明は陽極内に黒鉛等の導電材料を含有
することなく、酸化銀と１０〜５０重量％以下の範囲で
二酸化マンガンを含有した陽極と、陽極とセパレータと
の間に多孔性導電層を配置することにより二酸化マンガ
ンの放電もおこなわれ、放電容量を増大させ、二酸化マ
ンガンの混合によるコストダウンを計ることができるも
のであり、その工業的価値は大である。As described above, the present invention does not contain a conductive material such as graphite in the anode, but includes an anode containing silver oxide and manganese dioxide in an amount of 10 to 50% by weight, and a porous conductive material between the anode and the separator. By arranging the layers, discharge of manganese dioxide is also performed, increasing the discharge capacity and reducing costs by mixing manganese dioxide, which has great industrial value.
第１図は本発明の一実施例によるボタン型酸化銀電池の
縦断面図、第２図は種々の多孔性の導電層である。
１・・・酸化銀陽極、３・・・導電層、４・・・セパレ
ータ、５・・・亜鉛陰極。FIG. 1 is a longitudinal cross-sectional view of a button-type silver oxide battery according to an embodiment of the present invention, and FIG. 2 shows various porous conductive layers. DESCRIPTION OF SYMBOLS 1... Silver oxide anode, 3... Conductive layer, 4... Separator, 5... Zinc cathode.
Claims (1)
マンガンと酸化銀との混合物からなり、陽極中の二酸化
マンガンを１０〜５０重量％含有し、陽極とセパレータ
との間に、電槽内面の一部もしくは全周面と接触する形
状からなる多孔性導電層を配し、亜鉛又はカドミウム等
の陰極を充填した陰極端子兼用のキャップとにより封口
してなるボタン型酸化銀電池。 ２ 多孔性導電層をネット、エキスバンドメタル又は穿
孔板よりなる特許請求の範囲第１項記載のボタン型酸化
銀電池。[Scope of Claims] 1. An anode filled in a battery case that also serves as an anode terminal is made of a mixture of manganese dioxide and silver oxide, and contains 10 to 50% by weight of manganese dioxide in the anode. A button in which a porous conductive layer is placed in between and is in contact with part or all of the inner surface of the battery case, and the button is sealed with a cap that also serves as a cathode terminal and is filled with a cathode such as zinc or cadmium. type silver oxide battery. 2. The button-type silver oxide battery according to claim 1, wherein the porous conductive layer is made of a net, expanded metal, or perforated plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51126626A JPS5826619B2 (en) | 1976-10-20 | 1976-10-20 | Button silver oxide battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51126626A JPS5826619B2 (en) | 1976-10-20 | 1976-10-20 | Button silver oxide battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5351433A JPS5351433A (en) | 1978-05-10 |
| JPS5826619B2 true JPS5826619B2 (en) | 1983-06-03 |
Family
ID=14939838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51126626A Expired JPS5826619B2 (en) | 1976-10-20 | 1976-10-20 | Button silver oxide battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826619B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55108553U (en) * | 1979-01-18 | 1980-07-30 | ||
| JPS5849796Y2 (en) * | 1979-01-19 | 1983-11-14 | 株式会社三谷バルブ | Injection equipment for powders, viscous substances, etc. |
| JPS56129946U (en) * | 1980-03-05 | 1981-10-02 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50113731A (en) * | 1974-02-22 | 1975-09-06 |
-
1976
- 1976-10-20 JP JP51126626A patent/JPS5826619B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50113731A (en) * | 1974-02-22 | 1975-09-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5351433A (en) | 1978-05-10 |
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