JPH03210763A - Silver oxide battery - Google Patents
Silver oxide batteryInfo
- Publication number
- JPH03210763A JPH03210763A JP497390A JP497390A JPH03210763A JP H03210763 A JPH03210763 A JP H03210763A JP 497390 A JP497390 A JP 497390A JP 497390 A JP497390 A JP 497390A JP H03210763 A JPH03210763 A JP H03210763A
- Authority
- JP
- Japan
- Prior art keywords
- silver oxide
- positive electrode
- carbon
- battery
- circuit voltage
- 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
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910001923 silver oxide Inorganic materials 0.000 title claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000011149 active material Substances 0.000 claims abstract 4
- 239000003792 electrolyte Substances 0.000 claims abstract 3
- VFWRGKJLLYDFBY-UHFFFAOYSA-N silver;hydrate Chemical compound O.[Ag].[Ag] VFWRGKJLLYDFBY-UHFFFAOYSA-N 0.000 claims abstract 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052799 carbon Inorganic materials 0.000 abstract description 19
- 239000003513 alkali Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910002090 carbon oxide Inorganic materials 0.000 abstract 1
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Classifications
-
- Y02E60/12—
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、酸化銀電池の改良に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to improvements in silver oxide batteries.
従来の技術
近年の電子機器の発展、多機能化は、その電源である電
池に対して高容量化を求めてきた。BACKGROUND OF THE INVENTION The recent development and multi-functionality of electronic devices has required higher capacity batteries for their power sources.
この要求に対して答えるためには、正極の充填密度を高
めることが不可欠である。そのためには充填性を疎外す
るカーボンの量を減ら、すこ′とが有効である。しかし
、導電材であるカーボン量を単純に減少させることは、
正極内の導電性が低下し、重要な特性である閉路電圧特
性の低下をまねくことがわかっている。In order to meet this demand, it is essential to increase the packing density of the positive electrode. To this end, it is effective to reduce the amount of carbon that impedes filling properties. However, simply reducing the amount of carbon, which is a conductive material,
It is known that the conductivity within the positive electrode decreases, leading to a decrease in closed circuit voltage characteristics, which is an important characteristic.
従来は、この欠点を解消すめためにカーボンを入れずに
顆粒状の酸化銀の表面を還元して銀でおおい、充填性と
導電性を満たしていた。Conventionally, in order to overcome this drawback, the surface of granular silver oxide was reduced and covered with silver without adding carbon to satisfy filling properties and conductivity.
発明が解決しようとする課題
このような従来技術を用いると、特性上は要望を満足す
る。しかしながら、顆粒状の酸化銀の表面を還元する工
程が必要なことや、カーボンの替りに高価な銀を導電材
として利用するため、かなりのコストアップとなるとい
う課題があった。Problems to be Solved by the Invention Using such conventional technology satisfies the requirements in terms of characteristics. However, this method requires a step of reducing the surface of the granular silver oxide, and uses expensive silver as a conductive material instead of carbon, resulting in a considerable cost increase.
本発明は、このような課題を解決するものであって、閉
路電圧特性を低下させることなく、より高容量の酸化銀
電池をより低コストで提供することを目的とするもので
ある。The present invention is intended to solve these problems, and aims to provide a silver oxide battery with higher capacity at a lower cost without reducing the closed circuit voltage characteristics.
課題を解決するための手段
この課題を解決するために、本発明では正極として粒径
５０〜３００μｍの顆粒状酸化銀と粒径１μｍ以下の微
粒子のカーボンとの混合物の加圧成型体を用いるもので
ある。Means for Solving the Problem In order to solve this problem, in the present invention, a pressure-molded body of a mixture of granular silver oxide with a particle size of 50 to 300 μm and fine particle carbon with a particle size of 1 μm or less is used as the positive electrode. It is.
作用
このような大きさの材料を用いることにより、閉路電圧
特性を低下させることなく、より高容量の酸化銀電池を
より低コストで提供することができる。Effect: By using a material of such a size, a silver oxide battery with a higher capacity can be provided at a lower cost without reducing the closed circuit voltage characteristics.
実施例 以下、第１図を用いて本発明の一実施例を説明する。Example An embodiment of the present invention will be described below with reference to FIG.
第１図はボタン形酸化銀電池の断面図である。FIG. 1 is a cross-sectional view of a button-shaped silver oxide battery.
本実施例では、直径６．８ｍ＋１．高さ２．６諭の電池
５Ｒ６２６ＳＷを用いた。In this example, the diameter is 6.8m+1. A battery 5R626SW with a height of 2.6 cm was used.
図中１は正極ケース、２は本発明にかかわる正極で、粒
径１００〜２Ｏ０μｍの顆粒状酸化銀と粒１０．５〜０
．７μｍのカーボンとの混合体を加圧成型したものであ
る。３は正極リング、４はセパレータ、５は含液材、６
は封口リング、７は負極合剤、８は封口板である。In the figure, 1 is a positive electrode case, 2 is a positive electrode according to the present invention, which includes granular silver oxide particles with a particle size of 100 to 200 μm and particles of 10.5 to 0.0 μm.
．． A mixture with 7 μm carbon is pressure molded. 3 is a positive electrode ring, 4 is a separator, 5 is a liquid-containing material, 6
7 is a sealing ring, 7 is a negative electrode mixture, and 8 is a sealing plate.
本検討では、本発明の材料と、従来例として、一般に使
われている粒径１０〜４０μｍの酸化銀と、粒径１０〜
１５μｍのカーボンを比較した。In this study, we used the material of the present invention, silver oxide with a particle size of 10 to 40 μm, which is commonly used as a conventional example, and silver oxide with a particle size of 10 to 40 μm.
15 μm carbon was compared.
第２図は、本発明の材料と従来の材料を用いて、酸化銀
とカーボンの配合比を変化させて、電池を製造した時の
内部抵抗の変化である。第２図で明確なように、従来例
の材料では５重量％以上のカーボン添加で内部抵抗が安
定するのに対し本発明の材料では１重量％の添加で同様
な内部抵抗が得られる。この電池で、閉路電圧特性の一
般的な要望を満たすためには、第２図の安定領域つまり
２ＯΩ程度の内部抵抗であることが必要である。FIG. 2 shows changes in internal resistance when batteries were manufactured using the material of the present invention and conventional materials and varying the blending ratio of silver oxide and carbon. As is clear from FIG. 2, in the conventional material, the internal resistance becomes stable when carbon is added in an amount of 5% by weight or more, whereas in the material of the present invention, a similar internal resistance can be obtained with the addition of 1% by weight. In order to satisfy the general demand for closed circuit voltage characteristics with this battery, it is necessary that the internal resistance be in the stable region of FIG. 2, that is, about 20Ω.
第１表に、本発明の一実施例としてカーボンを１重量％
添加した正極を用いた電池Ａ１従来例としてカーボンを
１重量％添加した正極を用いた電池Ｂ、５重量％添加し
た電池Ｃ１および顆粒状酸化銀の表面を還元により銀（
５重量％）でおおったものを用いた電池りを比較した。Table 1 shows 1% by weight of carbon as an example of the present invention.
Battery A1 using a positive electrode with added carbon; Battery B using a positive electrode with 1% carbon added as a conventional example; Battery C1 using a positive electrode with 5% carbon added;
A comparison was made between battery cells coated with 5% by weight).
データは電池５０個の平均値である。閉路電圧は一１０
℃。Data are average values of 50 batteries. The closed circuit voltage is -10
℃.
２にΩ、５秒の最低電圧である。2Ω, the lowest voltage for 5 seconds.
第１表かられかるように、本発明の実施例の電池Ａは高
コスト、高容量である電池りと同等の充填密度になって
おり、結果として容量もほぼ同等なものとなっている。As can be seen from Table 1, the battery A of the example of the present invention has a packing density equivalent to that of a high-cost, high-capacity battery, and as a result, the capacity is also approximately the same.
また内部抵抗、閉路電圧でも電池りや従来例の電池Ｃと
同様なレベルとなっている。一方電池Ｂは、第１図から
推定されるように、加剰のカーボンを添加しても大きな
特性向上は見られないことがわかる。Also, the internal resistance and closed circuit voltage are at the same level as the battery and the conventional battery C. On the other hand, in battery B, as estimated from FIG. 1, it can be seen that no significant improvement in characteristics is observed even when additional carbon is added.
以上の結果より、本発明で用いた粒径の酸化銀とカーボ
ンを組み合わせることにより、高コストの処理をするこ
となく、高容量の電池を、閉路電圧特性を低下させずに
製造することができる。From the above results, by combining silver oxide and carbon with the particle size used in the present invention, it is possible to manufacture high-capacity batteries without deteriorating the closed-circuit voltage characteristics without expensive processing. .
これは、顆粒状の大きな酸化銀電池の周辺に、微粒子の
カーボンが分布することにより。少ないカーボン量で正
極合剤内に導電性のネットワークができるためであると
考えられる。This is due to the distribution of fine carbon particles around large granular silver oxide batteries. This is thought to be due to the formation of a conductive network within the positive electrode mixture with a small amount of carbon.
なお粒径については、５０〜３００μｍの酸化銀と１μ
ｍ以下のカーボンの組合せで実施例°と同様な効果が得
られた。Regarding the particle size, silver oxide of 50 to 300 μm and 1 μm
The same effect as in Example 2 was obtained with a combination of carbons of m or less.
発明の効果
以上の結果から明らかなように、正極を粒径５０〜３０
０μｍの顆粒状の酸化銀と、粒径１μｍ以下のカーボン
との混合物を加圧成型して作ることにより、閉路電圧特
性を低下させることなく、より高容量の酸化銀電池をよ
り低価格で作ることができる。As is clear from the results above and beyond the effects of the invention, the positive electrode has a particle size of 50 to 30
By press-molding a mixture of granular silver oxide with a particle size of 0 μm and carbon with a particle size of 1 μm or less, a silver oxide battery with higher capacity can be made at a lower price without reducing the closed circuit voltage characteristics. be able to.
第１図は本発明の実施例におけるボタン形酸化１・・・
・・・正極ケース、２・・・・・・正極合剤、３・・・
・・・正極リング、４・・・・・・セパレータ、５・・
・・・・含浸材、６・・・・・・封口リング、７・・・
・・・負極、８・・・・・・封口板。Figure 1 shows button-shaped oxidation 1 in an embodiment of the present invention...
...Positive electrode case, 2...Positive electrode mixture, 3...
... Positive electrode ring, 4... Separator, 5...
... Impregnating material, 6... Sealing ring, 7...
...Negative electrode, 8... Sealing plate.
Claims (1)
て酸化銀（Ａｇ＿２Ｏ）、電解液としてアルカリ水溶液
をそれぞれ用い、前記正極は粒径５０〜３００μｍの顆
粒状のＡｇ＿２Ｏと粒径１μｍ以下のカーボンとの混合
物を加圧成型したものである酸化銀電池。Zinc (Zn) is used as the active material of the negative electrode, silver oxide (Ag_2O) is used as the active material of the positive electrode, and an alkaline aqueous solution is used as the electrolyte. A silver oxide battery is a pressure-molded mixture of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP497390A JPH03210763A (en) | 1990-01-12 | 1990-01-12 | Silver oxide battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP497390A JPH03210763A (en) | 1990-01-12 | 1990-01-12 | Silver oxide battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03210763A true JPH03210763A (en) | 1991-09-13 |
Family
ID=11598544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP497390A Pending JPH03210763A (en) | 1990-01-12 | 1990-01-12 | Silver oxide battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03210763A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005235595A (en) * | 2004-02-20 | 2005-09-02 | Hitachi Maxell Ltd | Button type alkaline battery and its manufacturing method |
| JP2006278091A (en) * | 2005-03-29 | 2006-10-12 | Hitachi Maxell Ltd | Coin-shaped silver-oxide battery |
-
1990
- 1990-01-12 JP JP497390A patent/JPH03210763A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005235595A (en) * | 2004-02-20 | 2005-09-02 | Hitachi Maxell Ltd | Button type alkaline battery and its manufacturing method |
| JP2006278091A (en) * | 2005-03-29 | 2006-10-12 | Hitachi Maxell Ltd | Coin-shaped silver-oxide battery |
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