JPS6398959A - Sealed alkaline manganese secondary battery - Google Patents
Sealed alkaline manganese secondary batteryInfo
- Publication number
- JPS6398959A JPS6398959A JP61245715A JP24571586A JPS6398959A JP S6398959 A JPS6398959 A JP S6398959A JP 61245715 A JP61245715 A JP 61245715A JP 24571586 A JP24571586 A JP 24571586A JP S6398959 A JPS6398959 A JP S6398959A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- silver powder
- manganese dioxide
- secondary battery
- active material
- 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
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 10
- 239000011572 manganese Substances 0.000 title claims abstract description 10
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 28
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000007774 positive electrode material Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 7
- 239000007773 negative electrode material Substances 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 abstract description 3
- 239000004332 silver Substances 0.000 abstract description 3
- 239000011149 active material Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000002482 conductive additive Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 208000014617 hemorrhoid Diseases 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/626—Metals
-
- 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
- H01M4/24—Electrodes for alkaline accumulators
-
- 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
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
-
- 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
- H01M4/624—Electric conductive fillers
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (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、密閉型アルカリマンガン二次電池の改良に関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to improvements in sealed alkaline manganese secondary batteries.
従来の技術
従来まで、この種の密閉型二次電池で充放電サイクル特
性の向上については数多くの提案があるが、定電圧で長
時間充電された場合の討圧特性向上については、負極活
物質である亜鉛（で、酸化亜鉛を加えるなどわずかの提
案しかなされていない。Conventional technology Until now, there have been many proposals for improving the charge-discharge cycle characteristics of this type of sealed secondary battery, but the negative electrode active material However, only a few proposals have been made, such as adding zinc oxide.
発明が解決しようとする問題点
この種の二次電池は一般に耐圧試験中に、電解液の水分
解が生じ、正極より酸素ガスが、また負極より水素ガス
が発生する。そのため電池膨張が生じ、ひどい時には電
池の破裂を生じる。前述したように負極から発生する水
素ガスに対しては、負極に酸化亜鉛を混入させる等の方
法によりかなりの改良がなされてきたがそれでも不充分
である。Problems to be Solved by the Invention In this type of secondary battery, water decomposition of the electrolyte generally occurs during a pressure test, and oxygen gas is generated from the positive electrode and hydrogen gas is generated from the negative electrode. This causes the battery to expand and, in severe cases, cause the battery to explode. As mentioned above, considerable improvements have been made to the hydrogen gas generated from the negative electrode by methods such as mixing zinc oxide into the negative electrode, but these are still insufficient.
正極から発生する酸素ガスによる電池膨張もあり、これ
に対しては、生活物質である二酸化マンガンに銀粉末を
添加する方法が検討されているが、耐圧特性、放電特性
を満足するには、酸化銀粉末を２０重３％以上加える必
要がある。従って、高価格な銀粉末を多量に使用すると
いう問題点がある。There is also battery expansion due to oxygen gas generated from the positive electrode, and a method of adding silver powder to manganese dioxide, a living material, is being considered, but in order to satisfy the pressure resistance and discharge characteristics, oxidation It is necessary to add at least 20 weight 3% of silver powder. Therefore, there is a problem in that a large amount of expensive silver powder is used.
本発明は、従来のガス発生による電池膨張、破裂という
問題の解決と、放電特性の向上を図ることにより、優れ
た密閉型アルカリマンガン二次電池を提供することを目
的とするものである。The present invention aims to provide an excellent sealed alkaline manganese secondary battery by solving the conventional problems of battery expansion and rupture due to gas generation and improving discharge characteristics.
問題点を解決するための手段
この問題点を解決するため本発明は、正極活物質である
二酸化マンガン１００重量部に対して、フレーク状の銀
粉末を５〜１５重量部添加したものである。Means for Solving the Problem In order to solve this problem, the present invention adds 5 to 15 parts by weight of flaky silver powder to 100 parts by weight of manganese dioxide, which is the positive electrode active material.
作 用
この範囲の量のフレーク状の銀粉末を主正極活物質であ
る二酸化マンガンに添加することにより、銀の浸れた充
電特性、中でも浸れた耐圧特性が電池系を支配し、耐圧
試験の電圧まで急激に電池電圧が上昇し、電池に流れる
充電電流が急激に減少する。従って従来のように正極が
二酸化マンガンのみで構成された電池のように耐圧テス
トの電圧まで電池電圧が徐々に上昇し、その耐圧電圧ま
で長時間かかって達し、その間に電池に電流が流れ続け
ることにより、結果としてガス発生が多くなるというこ
とがなくなり、耐圧特性の優れた密閉型アルカリマンガ
ン二次電池を得ることができる。Effect By adding flaky silver powder in an amount in this range to manganese dioxide, which is the main positive electrode active material, the immersed charge characteristics of silver, especially the immersed voltage resistance characteristics, dominate the battery system, and the voltage in the voltage test The battery voltage rises rapidly until the battery reaches 100%, and the charging current flowing to the battery rapidly decreases. Therefore, as with conventional batteries in which the positive electrode is composed only of manganese dioxide, the battery voltage gradually rises to the withstand voltage test voltage, and it takes a long time to reach that withstand voltage, during which current continues to flow through the battery. As a result, gas generation does not increase, and a sealed alkaline manganese secondary battery with excellent pressure resistance characteristics can be obtained.
又、正極の電導助剤として、フレーク状の銀粉末を用い
ることにより、従来の球状銀粉末に比べて、少量で電池
特性として重要な電導性を満足できる。Furthermore, by using flaky silver powder as a conductive additive for the positive electrode, it is possible to satisfy the electrical conductivity, which is important as a battery characteristic, with a smaller amount than conventional spherical silver powder.
これは、球状銀粉末に比べ、フレーク状銀粉末は、表面
積が大きく顆粒状酸化銀粉末間に薄くはいり込んだ状態
で電導性を保たせることができるからである。This is because, compared to spherical silver powder, flaky silver powder has a larger surface area and can maintain electrical conductivity even when thinly inserted between granular silver oxide powders.
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。第
１図は本発明のボタン型アルカリマンガン二次電池の断
面図である。本実施例ではサイズとして直径１１．６ｍ
ｍ、高さ３，０聰の電池を用いた。EXAMPLE An example of the present invention will be described below with reference to FIG. FIG. 1 is a sectional view of a button-type alkaline manganese secondary battery of the present invention. In this example, the size is 11.6 m in diameter.
A battery with a height of 3.0 m and a height of 3.0 m was used.
第１図において、１は鉄にニッケルメッキした正極ケー
ス、２は本発明による正極、３は鉄にニッケルメッキし
た正極リング、４はポリエチレンのグラフト重合膜から
なるセパレータ、６はセルロースからなる含浸材、６は
ナイロンよりなる封口リング、７は亜鉛を主体とし添加
物として酸化亜鉛を含んだ負極活物質、８はニッケルー
ステンレス鋼−鋼の三層クラツド材よりなる負極端子を
兼ねた封口板である。In FIG. 1, 1 is a positive electrode case made of nickel-plated iron, 2 is a positive electrode according to the present invention, 3 is a positive electrode ring made of nickel-plated iron, 4 is a separator made of a polyethylene graft polymer film, and 6 is an impregnated material made of cellulose. , 6 is a sealing ring made of nylon, 7 is a negative electrode active material mainly composed of zinc and containing zinc oxide as an additive, and 8 is a sealing plate which also serves as a negative electrode terminal and is made of a three-layer cladding material of nickel-stainless steel-steel. be.
本発明の実施例の電池と、従来の電池の比較を以下に示
す。第１表に示す銀量を添加した正極を用いた電池を用
いて試験を行った。A comparison between a battery according to an embodiment of the present invention and a conventional battery is shown below. A test was conducted using a battery using a positive electrode to which the amount of silver shown in Table 1 was added.
第１表 ここで電池Ａは従来の銀を含まない電池である。Table 1 Here, battery A is a conventional silver-free battery.
これらの電池を用いて耐圧テストを行った。第２表はそ
の結果であり、電池の膨張量を調単位で表わしたもので
ある。A pressure test was conducted using these batteries. Table 2 shows the results, and shows the expansion amount of the battery in units of tonality.
第２表より明らかなように電池の膨張は耐圧テストの電
圧に依存するが、一般にこの種の二次電池で必要とされ
ている耐圧テス）１．７５Ｖ〜１．９０■で２００ｏ時
間の基準で判断する時、電池ＡおよびＤでは２００ｏ時
間以内で電池の膨張が認められる。−刃鋼の添加量が５
重量部以上である電池Ｂ、Ｃ，Ｅ、Ｆ、Ｇ、Ｈでは膨張
は認められなかった。この原因について解析してみると
、第２図に示すように耐圧テスト中の電圧と電流の変化
が従来の電池Ａと本発明の電池Ｅとで明らかな差が認め
られた。すなわち、従来の電池Ａでは耐圧テスト電圧に
電池電圧が達するのに長い時間が必要であり、電池に流
れる電流値も高くこの間にガス発生が認められた。−力
木発明の実施例の電池Ｅではある一定時間後急激に電池
電圧が上昇して耐圧テスト電圧に達し、電流値も急激に
減少する。As is clear from Table 2, the expansion of the battery depends on the voltage of the withstand voltage test, but the standard for the withstand voltage test (200o hours at 1.75 V to 1.90 ■) is generally required for this type of secondary battery. When judged by , battery expansion was observed within 200 o hours for batteries A and D. -Additional amount of blade steel is 5
No expansion was observed in batteries B, C, E, F, G, and H, which contained parts by weight or more. When the cause of this was analyzed, as shown in FIG. 2, there was a clear difference in the changes in voltage and current during the withstand voltage test between the conventional battery A and the battery E of the present invention. That is, in the conventional battery A, it took a long time for the battery voltage to reach the withstand voltage test voltage, and the current value flowing through the battery was also high, and gas generation was observed during this time. - In the battery E according to the embodiment of Rikiki's invention, the battery voltage increases rapidly after a certain period of time and reaches the withstand voltage test voltage, and the current value also decreases rapidly.
この電池では電圧の急上昇まではガス発生は認められず
、正極ではＡｑ −Ａ（Ｊ ２０− ＡｃｒＯナル反応
７＞：、負極ではＺｎ０−Ｚｎになる反応に使われてい
るものと思われる。また電圧上昇後は電流が極めて小さ
いため、耐圧テストの所定期間２０００時間内ではガス
発生は極めて小さく電池膨張に至らないことがわかった
。In this battery, no gas generation was observed until the voltage suddenly increased, and it is thought that the reaction to form Aq-A (J 20-AcrOnal reaction 7:) at the positive electrode and Zn0-Zn at the negative electrode. Since the current is extremely small after the voltage rises, it was found that within the predetermined period of 2000 hours of the withstand voltage test, gas generation was extremely small and the battery did not expand.
又Ａ−Ｈの電池の製造後の電圧、内部抵抗の値と、定抵
抗１６ＫＱで連続放電した際の１．３０Ｖ力ツト時の放
電時間を第３表に示す。Further, Table 3 shows the voltages and internal resistance values of the batteries A-H after manufacture, and the discharge time at 1.30V when continuously discharging at a constant resistance of 16KQ.
第３表より明らかなように、電池の１．３■力ツト時で
の放電特性は、二酸化マンガンの充填量と電池の内部抵
抗に依存するが、二酸化マンガンでのみ構成された電池
Ａ、フレーク状銀粉末と同一添加量の電池Ｂでは、内部
抵抗が高く、放電時間が短い。As is clear from Table 3, the discharge characteristics of a battery at a power of 1.3 cm depend on the amount of manganese dioxide filled and the internal resistance of the battery. Battery B containing the same amount of silver powder had a high internal resistance and a short discharge time.
従って球状銀粉末で、フレーク状銀粉末と同等の内部抵
抗値をだすには、添加量が２０重量係以上必要であるが
、銀粉末の添加量が多い分、正極活物質の二酸化マンガ
ンが充填できず、電池Ｃは放電時間が短くなる。Therefore, in order to produce an internal resistance value equivalent to that of flaky silver powder with spherical silver powder, the amount added must be 20% by weight or more, but the greater the amount of silver powder added, the more manganese dioxide, the positive electrode active material, is filled. However, battery C has a shorter discharge time.
フレーク状銀粉末を用いた電池Ｄ−Ｈでは、添加量が５
〜１５重量部の範囲内で、内部抵抗値も低く、放電特性
においても優れた電池が得られた。In the battery D-H using flaky silver powder, the amount added was 5
Within the range of ~15 parts by weight, batteries with low internal resistance and excellent discharge characteristics were obtained.
又、上記実験では、厚み０．１１ｔｍ 、粒子径５μｍ
のフレーク状銀粉末を用いたが、０．０５μｍ以下の厚
みでは粒子が壊れ易く製造が難しい。逆に０．６μｍ以
上であれば１Ｑ重量部添加時に電池の内部抵抗が２５Ω
以上となり、放電特性が悪くなる。In addition, in the above experiment, the thickness was 0.11 tm and the particle diameter was 5 μm.
flaky silver powder was used, but if the thickness is less than 0.05 μm, the particles are easily broken and manufacturing is difficult. Conversely, if it is 0.6μm or more, the internal resistance of the battery will be 25Ω when 1Q part by weight is added.
As a result, the discharge characteristics deteriorate.
又、粒子径が１μｍ以下、３０１ｒｍ以上の場合でも、
添加量１５重ｕ％以下では、内部抵抗値が高く、満足で
きる放電特性は得られなかった。In addition, even if the particle size is 1 μm or less and 301 rm or more,
When the addition amount was 15% by weight or less, the internal resistance value was high and satisfactory discharge characteristics could not be obtained.
これは、二酸化マンガンにフレーク状銀粉末を混合した
場合、粒子径が３０μｍ以上のフレーク状銀粉末では不
均一な混合状態になるからである。This is because when flaky silver powder is mixed with manganese dioxide, flaky silver powder with a particle size of 30 μm or more will result in an uneven mixed state.
また、粒子径が１μｍ以下の微粒の場合は、二次粒子を
作り易く、均一混合ができないからである。Further, in the case of fine particles having a particle size of 1 μm or less, secondary particles are easily formed and uniform mixing cannot be achieved.
以上のように、フレーク状の銀粉末の添加量を５〜１５
重量部とすることで、耐圧特性、放電特性に浸れた電池
が得られた。As mentioned above, the amount of flaky silver powder added is 5 to 15%.
By using parts by weight, a battery with excellent pressure resistance and discharge characteristics was obtained.
発明の効果
以上の説明から明らかなように、生活物質である二酸化
マンガン１００重量部に対して、フレーク状の銀粉末を
５〜１５重量部を添加することにより耐圧特性、放電特
性に優れ、かつ経済的な密閉型アルカリマンガン二次電
池を得ることができる。Effects of the Invention As is clear from the above explanation, by adding 5 to 15 parts by weight of flaky silver powder to 100 parts by weight of manganese dioxide, which is a living substance, excellent pressure resistance characteristics and discharge characteristics can be obtained. An economical sealed alkaline manganese secondary battery can be obtained.
第１図は本発明の実施例における密閉型アルカリマンガ
ン二次電池の縦断面図、第２図は２５℃１．９０Ｖ耐圧
テストにおける電圧電流曲、線である。
１・・・・・・正極ケース、２・・・・・正極、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。
代理人の氏名 弁理士 中 尾 敏 男 ほか１泡沫
塚
新痔Ｕミ ｍ＋ｌ：ＩＩFIG. 1 is a longitudinal cross-sectional view of a sealed alkaline manganese secondary battery in an example of the present invention, and FIG. 2 is a voltage-current curve and line in a 1.90V withstand voltage test at 25°C. 1...Positive electrode case, 2...Positive electrode, 3...
... Positive electrode ring, 4... Separator, 5.
...Impregnating material, 6...Sealing ring, 7...
...Negative electrode, 8... Sealing plate. Name of agent: Patent attorney Toshio Nakao and 1 other person
Tsuka new hemorrhoid Umi m+l:II
Claims (2)
物質、アルカリ水溶液を電解液とした密閉型電池であっ
て、正極活物質は二酸化マンガン１００重量部に対して
、フレーク状の銀粉末を５〜１５重量部添加したことを
特徴とする密閉型アルカリマンガン二次電池。(1) A sealed battery with manganese dioxide as the main positive electrode active material, zinc as the main negative electrode active material, and an alkaline aqueous solution as the electrolyte, in which the positive electrode active material is flaky silver powder based on 100 parts by weight of manganese dioxide. A sealed alkaline manganese secondary battery, characterized in that 5 to 15 parts by weight of is added.
５μｍ、粒子径が１〜３０μｍである特許請求の範囲第
１項記載の密閉型アルカリマンガン二次電池。(2) The flaky silver powder has a thickness of 0.05-0.
The sealed alkaline manganese secondary battery according to claim 1, which has a particle size of 5 μm and a particle size of 1 to 30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61245715A JPS6398959A (en) | 1986-10-16 | 1986-10-16 | Sealed alkaline manganese secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61245715A JPS6398959A (en) | 1986-10-16 | 1986-10-16 | Sealed alkaline manganese secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6398959A true JPS6398959A (en) | 1988-04-30 |
Family
ID=17137722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61245715A Pending JPS6398959A (en) | 1986-10-16 | 1986-10-16 | Sealed alkaline manganese secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6398959A (en) |
-
1986
- 1986-10-16 JP JP61245715A patent/JPS6398959A/en active Pending
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