JPS63200465A - Silver oxide battery - Google Patents
Silver oxide batteryInfo
- Publication number
- JPS63200465A JPS63200465A JP3170387A JP3170387A JPS63200465A JP S63200465 A JPS63200465 A JP S63200465A JP 3170387 A JP3170387 A JP 3170387A JP 3170387 A JP3170387 A JP 3170387A JP S63200465 A JPS63200465 A JP S63200465A
- Authority
- JP
- Japan
- Prior art keywords
- silver oxide
- positive electrode
- powder
- gold
- negative electrode
- 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 66
- 229910001923 silver oxide Inorganic materials 0.000 title claims abstract description 33
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052737 gold Inorganic materials 0.000 claims abstract description 18
- 239000010931 gold Substances 0.000 claims abstract description 18
- 239000011149 active material Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 abstract description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 239000008188 pellet Substances 0.000 abstract description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004677 Nylon Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 229920001778 nylon Polymers 0.000 abstract description 3
- 238000007747 plating Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- -1 polyethylene Polymers 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 239000011787 zinc oxide Substances 0.000 abstract description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 239000008151 electrolyte solution Substances 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 12
- 229910052709 silver Inorganic materials 0.000 description 9
- 239000004332 silver Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000002482 conductive additive Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/54—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of silver
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/12—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with flat electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- 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、酸化銀を主剤とした正極を用いる酸化銀電池
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a silver oxide battery using a positive electrode mainly composed of silver oxide.
従来の技術
従来、酸化銀を主剤とする正極活物質を用いたボタン形
酸化銀電池の正極は、主剤である酸化銀に６重量％の黒
鉛粉末を混合して圧縮成形したものが用いられていた。Conventional technology Conventionally, the positive electrode of a button-shaped silver oxide battery using a positive electrode active material whose main ingredient is silver oxide has been compression molded by mixing 6% by weight of graphite powder with silver oxide, which is the main ingredient. Ta.
しかし、このボタン形酸化銀電池は、これを電源として
使用する機器、例えば電子腕時計、電卓などの小形薄形
化に伴い高電気容量化が要望されている。この高電気容
量化のため、正極活物質に関して２〜３の提案がなされ
ている。これらの提案はいずれも、嵩密度の低い電導助
剤である黒鉛に比べ、嵩密度の高い銀を用いるものであ
る。ある１つの提案は酸化銀の表面を還元し、酸化銀の
表面を銀層化するものであり、また他の提案は、種々の
形状の銀粉末を添加混合するものであり、これらの方法
によって、黒鉛を添加混合した正極に比べ約１．１倍の
高電気容量化が図れる。However, this button-shaped silver oxide battery is required to have a higher electric capacity as devices that use it as a power source, such as electronic wristwatches and calculators, become smaller and thinner. In order to achieve this high electric capacity, two to three proposals have been made regarding positive electrode active materials. All of these proposals use silver, which has a higher bulk density than graphite, which is a conductive additive with a lower bulk density. One proposal is to reduce the surface of silver oxide and form a silver layer on the surface of silver oxide, and another proposal is to add and mix silver powders of various shapes. , the electric capacity can be increased approximately 1.1 times compared to a positive electrode containing graphite.
発明が解決しようとする問題点
しかし、これらの銀を電導助剤として混合する場合、正
極の活物質である酸化銀粉末間に電導性をもたせ、かつ
高率放電特性を満足するためには、酸化銀１００重量部
に対して３〜７重量部を還元したりあるいは、銀粉末を
添加する必要があり、黒鉛を添加混合した正極に比べ約
１．１倍の高電気容量化にとどまっていた。Problems to be Solved by the Invention However, when these silvers are mixed as a conductive additive, in order to provide conductivity between the silver oxide powders that are the active material of the positive electrode and to satisfy high rate discharge characteristics, it is necessary to It was necessary to reduce 3 to 7 parts by weight to 100 parts by weight of silver oxide or add silver powder, and the electric capacity was only about 1.1 times higher than that of a positive electrode mixed with graphite. .
本発明は、この酸化銀電池をさらに高電気容量化するこ
とを目的としたものである。The object of the present invention is to further increase the electrical capacity of this silver oxide battery.
問題点を解決するための手段
本発明は、活物質である酸化銀の表面に、この酸化銀１
ｏｏ重量部当り金を０．１〜０．５重量部コーティング
したものを圧縮成形して正極としたものである。Means for Solving the Problems The present invention provides silver oxide 1 on the surface of silver oxide, which is an active material.
A positive electrode is obtained by compression molding a material coated with 0.1 to 0.5 parts by weight of gold per 0 parts by weight.
作用
この本発明により、従来の酸化銀の表面を銀層化したり
、銀粉末を添加混合する方法に比べ、極めて少量の金の
コーティングにより、高抵抗な酸化銀粉末間に極めてす
ぐれた電導性ネットワークが形成され、高率放電にすぐ
れ、かつ、従来の黒鉛を混合した酸化銀電池に比べ、約
１．２倍、また銀を電導助剤とした酸化銀電池に比べ約
１．１倍の高電気容量化が図れる。このことは金は極め
て安定な金属で表面酸化をうけにくく、またすぐれた電
導性を有するためであり、銀のような表面酸化をうける
金属に比べ、極めて少量の添加によって、その電導助剤
としての効果を発揮するからである。Effect: Compared to the conventional method of forming a silver layer on the surface of silver oxide or adding and mixing silver powder, the present invention creates an extremely excellent conductive network between high-resistance silver oxide powders by coating an extremely small amount of gold. is formed, and has excellent high rate discharge, and is approximately 1.2 times higher than conventional silver oxide batteries that contain graphite, and approximately 1.1 times higher than silver oxide batteries that use silver as a conductive agent. Electric capacity can be increased. This is because gold is an extremely stable metal that is not susceptible to surface oxidation and has excellent electrical conductivity. Compared to metals that are subject to surface oxidation such as silver, gold can be used as a conductive additive by adding a very small amount. This is because it exhibits the effect of
実施例
以下、本発明の詳細な説明する。図は、直径９．６Ｍ、
厚み２．０ ｆｌのボタン形酸化銀電池である。EXAMPLES The present invention will be described in detail below. The figure shows a diameter of 9.6M,
It is a button-shaped silver oxide battery with a thickness of 2.0 fl.
図中１は本発明の酸化銀の表面に金をコーティングした
粉末を圧縮成形した正極ペレットであり、これを正極ケ
ース２に挿入して、正極リング３と共に圧縮成形して正
極を構成した。次に負極は氷化亜鉛粉末にポリアクリル
酸ソーダを６重量％混合した負極合剤４を負極ケース６
に充填し、これに水酸化カリウムの１０モル／ｌ水溶液
に酸化亜鉛ｆ：６重量％溶解させたアルカリ電解液を注
液し、多孔性ポリエチレンフィルムからなるセパレータ
６とナイロン不織布よりなる含浸材７を挿入して構成し
た。８はナイロンからなるガスケットであるＯ
本実施例の正極ペレットは、酸化銀１００重量部当り０
．３重量部の金を化学メッキ法によって酸化銀の表面に
コーティングしたものである。また、プラズマ法によっ
てコーティングすることも可能である。In the figure, 1 is a positive electrode pellet obtained by compression molding a powder of silver oxide coated with gold on the surface of the present invention, which was inserted into a positive electrode case 2 and compression molded together with a positive electrode ring 3 to form a positive electrode. Next, for the negative electrode, negative electrode mixture 4, which is a mixture of 6% by weight of frozen zinc powder and sodium polyacrylate, was added to negative electrode case 6.
A separator 6 made of a porous polyethylene film and an impregnated material 7 made of a nylon nonwoven fabric are filled with an alkaline electrolyte prepared by dissolving 6% by weight of zinc oxide f in a 10 mol/l aqueous solution of potassium hydroxide. I configured it by inserting the . 8 is a gasket made of nylon.
．． The surface of silver oxide is coated with 3 parts by weight of gold by chemical plating. It is also possible to coat by plasma method.
化学メッキ法により、酸化銀１ｏＯ重量部当り、コーテ
ィングした金の量を０．０６重量部とした電池’ｉｌＬ
、０．１重量部の電池をす、０．３重量部の電池をＣ，
Ｏ，Ｓ重量部の電池ｆ、ｄ、１重量部の電池に６．従来
の銀粉末を３重量％添加した電池をｆとした場合の電池
容量を第１表に示す。また第２表には８ｍ人の高率放電
を行なった試験結果を示す。なお、この試験は一１０’
Ｃで６秒間放電した時の最低電圧を測定した。A battery in which the amount of coated gold was 0.06 parts by weight per 100 parts by weight of silver oxide by chemical plating method.
, 0.1 parts by weight of the battery, C, 0.3 parts by weight of the battery,
6. O, S for batteries f, d, 1 part by weight for batteries. Table 1 shows the battery capacity, where f is a conventional battery containing 3% by weight of silver powder. Further, Table 2 shows the test results in which high rate discharge was performed for 8 m people. In addition, this test is 110'
The lowest voltage when discharging for 6 seconds at C was measured.
（以 下金 白）
第１表より、金をコーティングした電池ａ −ｅは、従
来の電池ｆに比べて容量は約１．１倍となっている。ま
た高率放電試験結果を示す第２表は、電池ａ’６のぞき
、電池ｂ −ｅは従来電池ｆと同等もしくは良い結果と
なっていることを示す。なお、この高率放電は最低１．
２０Ｖ必要で、これ以下になれば、腕時計の電源として
用いると、ランプ使用時、ランプが点灯しなくなる。(Hereinafter referred to as gold and white) From Table 1, the capacity of batteries a to e coated with gold is about 1.1 times that of the conventional battery f. Further, Table 2 showing the high rate discharge test results shows that, except for battery a'6, batteries b to e had the same or better results than the conventional battery f. Note that this high rate discharge is at least 1.
20V is required, and if the voltage is lower than this, the lamp will not light up when used as a power source for a wristwatch.
この本発明の正極が従来の銀を電導助剤としていた酸化
銀電池に比べ、約１．１倍の高容量化と同等の高率放電
特性を維持するのは、金の表面が酸化されず、コーティ
ングした金のすべてが電導助剤として働くので、少量の
コーティングで良いのに対して、銀はその一部がすぐ表
面酸化され、数％の添加量が必要なためである。なお、
金は、非常に高価な材料であるため経済性を考えると上
限は０．５重量部が限界である。従って、金のコーティ
ングは酸化銀を１００重量部当り０．１重量部から０．
５重量部が最適と言える。The reason why the positive electrode of the present invention has a capacity approximately 1.1 times higher than conventional silver oxide batteries that use silver as a conductive agent and maintains the same high rate discharge characteristics is that the gold surface is not oxidized. This is because all of the coated gold acts as a conductive aid, so a small amount of coating is sufficient, whereas with silver, a portion of it is quickly oxidized on the surface, so it is necessary to add a few percent. In addition,
Since gold is a very expensive material, the upper limit is 0.5 parts by weight considering economic efficiency. Therefore, gold coatings contain from 0.1 parts by weight to 0.1 parts by weight per 100 parts by weight of silver oxide.
It can be said that 5 parts by weight is optimal.
発明の効果
以上のように本発明によって、極めて少量の金のコーテ
ィングによって高率放電特性を満足することができ、ま
た、同一サイズであれば、従来の黒鉛を添加した電池の
約１．２倍、銀を電導助剤とする場合の約１．１倍の高
電気容量化ができ、時計用電源として好適な酸化銀電池
が得られる。Effects of the Invention As described above, the present invention makes it possible to satisfy high rate discharge characteristics with a very small amount of gold coating, and for the same size, it is approximately 1.2 times faster than a conventional graphite-added battery. , the electrical capacity can be increased approximately 1.1 times as much as when silver is used as a conductive aid, and a silver oxide battery suitable as a power source for watches can be obtained.
図は本発明の実施例における酸化銀電池の断面図である
。
１・・・・・・正極ペレット、２・・・・・・正極ケー
ス、３・・・・・・正極リング、４・・・・・・負極合
剤、６・・・・・・負極ケース、６・・・・・・セパレ
ータ、７・・・・・・含浸材、８・・・・・・ガスケッ
ト。The figure is a sectional view of a silver oxide battery in an example of the present invention. 1...Positive electrode pellet, 2...Positive electrode case, 3...Positive electrode ring, 4...Negative electrode mixture, 6...Negative electrode case , 6... separator, 7... impregnation material, 8... gasket.
Claims (1)
部当り金を０．１から０．５重量部コーティングした正
極を有することを特徴とする酸化銀電池。A silver oxide battery comprising a positive electrode in which the surface of silver oxide, which is a main active material, is coated with 0.1 to 0.5 parts by weight of gold per 100 parts by weight of silver oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3170387A JPS63200465A (en) | 1987-02-13 | 1987-02-13 | Silver oxide battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3170387A JPS63200465A (en) | 1987-02-13 | 1987-02-13 | Silver oxide battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63200465A true JPS63200465A (en) | 1988-08-18 |
Family
ID=12338424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3170387A Pending JPS63200465A (en) | 1987-02-13 | 1987-02-13 | Silver oxide battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63200465A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7648799B2 (en) | 2007-03-30 | 2010-01-19 | Eveready Battery Co., Inc. | Multi-layer positive electrode structures having a silver-containing layer for miniature cells |
-
1987
- 1987-02-13 JP JP3170387A patent/JPS63200465A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7648799B2 (en) | 2007-03-30 | 2010-01-19 | Eveready Battery Co., Inc. | Multi-layer positive electrode structures having a silver-containing layer for miniature cells |
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