JPS5923466A - Manufacture of sealed type nickel cadmium storage battery anode plate - Google Patents

Manufacture of sealed type nickel cadmium storage battery anode plate

Info

Publication number
JPS5923466A
JPS5923466A JP57132643A JP13264382A JPS5923466A JP S5923466 A JPS5923466 A JP S5923466A JP 57132643 A JP57132643 A JP 57132643A JP 13264382 A JP13264382 A JP 13264382A JP S5923466 A JPS5923466 A JP S5923466A
Authority
JP
Japan
Prior art keywords
nickel
organic material
sintered body
storage battery
anode plate
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
Application number
JP57132643A
Other languages
Japanese (ja)
Inventor
Makoto Konishi
真 小西
Masami Nishimura
西村　正美
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Shin Kobe Electric Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Kobe Electric Machinery Co Ltd filed Critical Shin Kobe Electric Machinery Co Ltd
Priority to JP57132643A priority Critical patent/JPS5923466A/en
Publication of JPS5923466A publication Critical patent/JPS5923466A/en
Pending legal-status Critical Current

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
    • H01M4/24—Electrodes for alkaline accumulators
    • H01M4/26—Processes of manufacture
    • H01M4/28—Precipitating active material on the carrier
    • 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

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

PURPOSE:To manufacture an anode plate having increased life performance of a storage battery by holding a nickel porous sintered body in vapor of an organic material which is a liquid state at room temperature and oxidizable, and immersing it in a Cd(NO3)2 solution having lower temperature than boiling point of the organic material. CONSTITUTION:Vapor of an organic material which is liquid state at room temperature and oxidizable is filled in fine pores of a nickel porous sintered body. This porous body is immersed in a Cd(NO3)2 solution having lower temperature than boiling point of the organic material. When the porous body is immersed, the vapor of organic material becomes liquid and the pressure inside the fine pores is reduced. Therefore, penetration time of impregnating solution is reduced and an organic material layer is formed on the surface of the sintered body, and thereby oxidation of nickel is prevented. By preventing oxidation of nickel sintered body, decrease of discharge voltage of an anode plate caused by repeated charge-discharge or overdischarge is suppressed, and life performance of a sealed type nickel cadmium storage battery is improved.

Description

【発明の詳細な説明】 本発明は密閉形ニッケルカドミウム蓄電池に用いられる
陰極板へのカドミウム活物質の含浸に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the impregnation of a cadmium active material into a cathode plate used in a sealed nickel-cadmium storage battery.

従来、ニッケルカドミウム蓄電油隙極板の製造法として
は、カーボニルニッケル粉末あるいス はその喰ラリ−を水素・窒素雰囲気中７００〜１０００
℃の温度で焼結させることによって得たニッケル多孔質
焼結体を、硝酸カドミウムの　１− 溶液ζこ浸漬し、含浸された硝酸カドミウムをニッケル
板を対極としてアルカリ溶液中で電解還元した後、水洗
、乾燥するという工程を５〜６サイクル繰り返すことに
より、活物質を充填していた。しかし前記の製造法にお
いては、ニッケル多孔質焼結体を酸化性の高い硝酸カド
ミウム溶液に浸漬するために、活物質中へのニッケルの
溶解による混入か起っており、この混入ニッケルは、充
放電あるいは長期間充電状態のまま放置すると、活物質
であるカドミウムと合金を生成し、放電電位の低下を引
き起すという欠点を有していた。また硝酸カドミウムの
代りに酸化性の小さい硫酸カドミウムを用いた方法など
もあるか、硫酸塩の溶解度は硝酸塩に比べて小さいため
、Ｊサイクル当りの含浸量か少なく活物質を効率よく充
填することか困難であった。Conventionally, as a manufacturing method for nickel-cadmium storage oil-gap electrode plates, carbonyl nickel powder or its slurry was heated to 700 to 1000 ml in a hydrogen/nitrogen atmosphere.
A nickel porous sintered body obtained by sintering at a temperature of ℃ is immersed in a solution of cadmium nitrate, and the impregnated cadmium nitrate is electrolytically reduced in an alkaline solution using a nickel plate as a counter electrode. The active material was filled by repeating the steps of washing with water and drying 5 to 6 times. However, in the above manufacturing method, since the nickel porous sintered body is immersed in a highly oxidizing cadmium nitrate solution, nickel is dissolved into the active material and mixed into the active material. If they are discharged or left in a charged state for a long period of time, they form an alloy with the active material cadmium, which causes a decrease in the discharge potential. Also, is there a method that uses cadmium sulfate, which has low oxidizing properties, instead of cadmium nitrate? Since the solubility of sulfates is lower than that of nitrates, is it possible to efficiently fill the active material with a smaller amount of impregnation per J cycle? It was difficult.

これらの欠点を解消するため１こ、ニッケル多孔質焼結
体にカドミウム活物質を充填する操作において、酸化性
の小さいカドミウム塩を用いた含浸操作により充填した
後、硝酸カドミウム１こよる充填を行なう方法か提案さ
れたか２浸ａ。In order to eliminate these drawbacks, 1. In the operation of filling a nickel porous sintered body with a cadmium active material, after filling the nickel porous sintered body by an impregnation operation using a cadmium salt with low oxidizing property, the nickel porous sintered body is filled with 1 kg of cadmium nitrate. How proposed or 2 immersion a.

水洗等に全て２通りの槽を準備しなければならず、温度
、濃度コントロール等も非常繁雑Ｉ【なり易を欠点を有
している。Two types of tanks must be prepared for washing with water, etc., and temperature, concentration control, etc. are also very complicated.

本発明は上記の欠点を除去するもので、工程を繁雑にせ
ず、なおかつ含浸量を確保しつつ。The present invention eliminates the above-mentioned drawbacks, without complicating the process, and while ensuring the amount of impregnation.

充放電の繰り返しか過充電、放置による陰極板の放電電
位の低下を防ぐことで、蓄電池の寿命特性を向上させる
ことを目的とするものである。The purpose is to improve the life characteristics of the storage battery by preventing a decrease in the discharge potential of the cathode plate due to repeated charging and discharging, overcharging, or neglect.

本発明は上記目的を達成するため＋Ｃ為されたもので、
常温では液状の酸化をうけやすい有機物の蒸気をニッケ
ル多孔質焼結体の細孔中に満たした後、前記の有機物の
沸点よりも低い温度の浸漬液を用いることにより、浸漬
と同時−〔有機物蒸気を液体とならしめることで細孔内
を減圧された状態１こさせ、これにより浸漬液の侵入に
要する時間を短縮し、焼結体表面１こ前記有機物の層を
形成させること番こより、浸漬液によるニッケルの酸化
を防ぐことのできる密閉形ニッケルカドミウム蓄電池陰
極板の製造法である。The present invention has been made in order to achieve the above object,
After filling the pores of the nickel porous sintered body with the vapor of an organic substance that is liquid at room temperature and is susceptible to oxidation, by using an immersion liquid at a temperature lower than the boiling point of the organic substance, the organic substance By converting the vapor into a liquid, the inside of the pores are brought into a reduced pressure state, thereby shortening the time required for the immersion liquid to enter, and forming a layer of the organic substance on the surface of the sintered body. This is a method for manufacturing a cathode plate for a sealed nickel-cadmium storage battery that can prevent nickel from being oxidized by immersion liquid.

本発明の一実施例を説明する。長さ２５０＋ｕ＋ｎ。An embodiment of the present invention will be described. Length 250+u+n.

中３３咽、厚さ０６■の多孔質焼結体を１００°Ｃの飽
和メチルアルコール蒸気中に１０分間保持した後、直ち
に５０℃の硝酸カドミウム（比重１、８　Ｐ　Ｈ５）中
に１分間浸漬し、常温で静置することＫより余分な液を
除去する。この極板を７０℃の２０チ水酸化ナトリウム
中、ＩＯＡ／ｄｒｒＬｌ′で電解還元を行ない、水洗、
乾燥する。以さない陰極板を備えた蓄電池と比較すると
図面に示すように寿命特性に向上か見られる。A porous sintered body with a diameter of 33 cm and a thickness of 06 cm was held in saturated methyl alcohol vapor at 100°C for 10 minutes, and then immediately immersed in cadmium nitrate (specific gravity 1.8 P H5) at 50°C for 1 minute. Then, remove excess liquid by allowing it to stand at room temperature. This electrode plate was electrolytically reduced with IOA/drrLl' in 20% sodium hydroxide at 70°C, washed with water,
dry. As shown in the drawing, the life characteristics are improved when compared with a storage battery equipped with a cathode plate without a negative electrode plate.

上述のように１本発明直こよれば、ニッケル焼結体の酸
化を防ぐことにより充放電の繰り返し、過充電等による
陰極板放電電位の低下を抑制できるため、ニッケルカド
ミウム蓄電池の寿命特性を向上させることか可能であり
、さらに、充電の際にもニッケルの混入による水素過電
圧の低下を抑えることで充電末期の水素カスの発生を抑
えることかできるためニッケルカドミウム蓄電池の密閉
化を容品ならしめる等の効果かある０As mentioned above, according to the present invention, by preventing the oxidation of the nickel sintered body, it is possible to suppress the decrease in the discharge potential of the cathode plate due to repeated charging and discharging, overcharging, etc., thereby improving the life characteristics of the nickel cadmium storage battery. Furthermore, by suppressing the drop in hydrogen overvoltage due to nickel contamination during charging, it is possible to suppress the generation of hydrogen scum at the end of charging, so nickel-cadmium storage batteries can be sealed as packaging, etc. Is there an effect of 0?

【図面の簡単な説明】[Brief explanation of the drawing]

図面は１本発明の陰極板を備えた蓄電池（本発明品）と
、従来の陰極板を備えた蓄電池（従来品）の寿命特性を
示した曲線図である。 特許出願人 　５− 光房電サイタル（回〕The drawing is a curve diagram showing the life characteristics of a storage battery equipped with the cathode plate of the present invention (product of the present invention) and a storage battery equipped with a conventional cathode plate (conventional product). Patent applicant 5- Kobo Den Cital (times)

Claims (1)

【特許請求の範囲】[Claims] ニッケル多孔質焼結体を常温で液状の酸化をうけやすい
有機物の蒸気ζこ通した後、前記有機物の沸点よりも低
い温度の硝酸カドミウム溶液を用いた含浸操作によって
活物質を充填することを特徴とする密閉形ニッケルカド
ミウム蓄電油隙極板の製造法。The nickel porous sintered body is characterized by passing the vapor of an organic substance that is liquid at room temperature and is susceptible to oxidation, and then filling the active material by an impregnation operation using a cadmium nitrate solution at a temperature lower than the boiling point of the organic substance. A method for manufacturing a sealed nickel-cadmium storage oil-gap electrode plate.
JP57132643A 1982-07-29 1982-07-29 Manufacture of sealed type nickel cadmium storage battery anode plate Pending JPS5923466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57132643A JPS5923466A (en) 1982-07-29 1982-07-29 Manufacture of sealed type nickel cadmium storage battery anode plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57132643A JPS5923466A (en) 1982-07-29 1982-07-29 Manufacture of sealed type nickel cadmium storage battery anode plate

Publications (1)

Publication Number Publication Date
JPS5923466A true JPS5923466A (en) 1984-02-06

Family

ID=15086116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57132643A Pending JPS5923466A (en) 1982-07-29 1982-07-29 Manufacture of sealed type nickel cadmium storage battery anode plate

Country Status (1)

Country Link
JP (1) JPS5923466A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251543A (en) * 1975-10-22 1977-04-25 Sanyo Electric Co Method of producing sintered alkaline battery plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251543A (en) * 1975-10-22 1977-04-25 Sanyo Electric Co Method of producing sintered alkaline battery plate

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