JPS63160166A - Manufacture of cadmium anode plate for alkaline storage battery - Google Patents

Manufacture of cadmium anode plate for alkaline storage battery

Info

Publication number
JPS63160166A
JPS63160166A JP61307338A JP30733886A JPS63160166A JP S63160166 A JPS63160166 A JP S63160166A JP 61307338 A JP61307338 A JP 61307338A JP 30733886 A JP30733886 A JP 30733886A JP S63160166 A JPS63160166 A JP S63160166A
Authority
JP
Japan
Prior art keywords
paste
short fibers
active material
anode plate
cadmium
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.)
Granted
Application number
JP61307338A
Other languages
Japanese (ja)
Other versions
JPH0619988B2 (en
Inventor
Masakazu Shimoda
下田 雅一
Takao Ogura
孝夫 小倉
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 JP61307338A priority Critical patent/JPH0619988B2/en
Publication of JPS63160166A publication Critical patent/JPS63160166A/en
Publication of JPH0619988B2 publication Critical patent/JPH0619988B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/24Electrodes for alkaline accumulators
    • H01M4/246Cadmium electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

PURPOSE:To increase rechargeability by adding microporous polyolefin short fibers containing magnesium compound to a paste type cadmium anode plate. CONSTITUTION:Microporous polyolefin short fibers containing fine magnesium compound powder and an active material mainly comprising cadmium oxide are kneaded with a binder solution to prepare paste. The paste is applied to a porous substrate and dried to obtain a desired plate. Even if active particles of a paste type cadmium anode plate are repeatedly charged and discharged or allowed to stand in a discharged state, the coarse growth of active material particles is prevented by the action of magnesium dissolved from the polyolefin short fibers. Therefore, rechargeability is increased.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はポリビニルアルコールやカルボキシメチルセル
ロースなどの粘着剤の水溶液または有機溶剤溶液と酸化
カドミウムを主成分とする活物質を混練してペースト状
となし、これを金網 属*などの多孔基板に塗着し乾燥するアルカリ蓄電池用
カドミウム陰極板の製造方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a method of kneading an aqueous solution or an organic solvent solution of an adhesive such as polyvinyl alcohol or carboxymethyl cellulose with an active material whose main component is cadmium oxide to form a paste. The present invention relates to a method for producing a cadmium cathode plate for an alkaline storage battery, in which the cadmium cathode plate for an alkaline storage battery is coated on a porous substrate such as a metal wire mesh* and dried.

従来の技術 従来アルカリ蓄電池用の陰極板としては、ニッケル粉末
を焼結した基板に活物質を充填した焼結式極板、酸化カ
ドミウムを主成分とする活物質成型体をニッケルメッキ
した多孔性の鉄製容器で被覆したポケット式極板などが
用いられていた。
Conventional technology Conventional cathode plates for alkaline storage batteries include sintered plates in which a substrate made of sintered nickel powder is filled with an active material, and porous plates in which a molded body of active material whose main component is cadmium oxide is plated with nickel. Pocket-type electrode plates covered with iron containers were used.

しかしながら、焼結式極板は薄形極板が得られるので高
率放電特性が優れている反面、極板中に占めるニッケル
焼結基板の重量、体積が大きく、重量効率や容積効率が
悪い欠点を有している。また、ポケット式極板は厚いた
め活物質の利用率が低(、容積効率が低い欠点を有して
いる。
However, although sintered electrode plates have excellent high-rate discharge characteristics because they produce thin electrode plates, they have the disadvantage of poor weight efficiency and volumetric efficiency due to the large weight and volume of the nickel sintered substrate that occupies the electrode plate. have. In addition, because the pocket type electrode plate is thick, the active material utilization rate is low (and the volumetric efficiency is low).

このため、これらの欠点を除去すべくペースト式極板が
提案されている。このペースト式極板は、酸化カドミウ
ムを主成分とする活物質を粘着剤溶液で混練してペース
ト状となし、これをパンチングメタルなどの金属多孔板
に塗着後乾燥して得られる。
For this reason, paste-type electrode plates have been proposed to eliminate these drawbacks. This paste-type electrode plate is obtained by kneading an active material containing cadmium oxide as a main component with an adhesive solution to form a paste, applying the paste to a perforated metal plate such as punched metal, and then drying it.

発明が解決しようとする問題点 しかしながら、ペースト式陰極板は焼結式極板のように
ニッケル焼結体からなる集電体構造を有していないので
、充放電を縁り返し行ったり、放電状態で放置しておく
としだいに活物質粒子が粗大化、あるいは不活性化して
しまうため充電されにくくなるといった欠点を有してい
た。
Problems to be Solved by the Invention However, the paste-type cathode plate does not have a current collector structure made of sintered nickel like the sintered-type electrode plate, so it cannot be charged or discharged repeatedly or discharged. If left in this state, the active material particles gradually become coarse or inactive, making it difficult to charge.

問題点を解決するための手段 本発明は上記の如き欠点を除去するもので、マグネシウ
ム化合物の微粉末を含有せるポリオレフィン系の微多孔
短繊維と酸化カドミウムを主成分とする活物質とを粘着
剤溶液で混練したペーストを多孔基板に塗着乾燥して目
的の極板を得るものである。
Means for Solving the Problems The present invention eliminates the above-mentioned drawbacks, and uses polyolefin microporous short fibers containing fine powder of a magnesium compound and an active material mainly composed of cadmium oxide as an adhesive. The target electrode plate is obtained by applying a paste kneaded with a solution to a porous substrate and drying it.

作用 ペースト式カドミウム陰極板の活物質粒子が充放電を繰
返し行ったり、放電状態で放置してもポリオレフィン系
の微多孔短繊維から溶出したマグネシウムイオンの作用
(詳細な作用機構は明らかでない)により粗大化しに(
くなり、充電性が向上する。
Even if the active material particles of the paste-type cadmium cathode plate are repeatedly charged and discharged or left in a discharged state, they become coarse due to the action of magnesium ions eluted from the polyolefin microporous short fibers (the detailed mechanism of action is not clear). To change (
This improves charging performance.

実施例 ペレット状の低密度ポリエチレン25重量部とシリカ微
粉末5重量部、酸化マグネシウムの微粉末20重量部と
可塑剤ジオクチルフタレート50重量部をミキサーで混
合した後200±lO°Cにて加熱混練しなから押出成
形を行った。
Example 25 parts by weight of low density polyethylene in the form of pellets, 5 parts by weight of fine silica powder, 20 parts by weight of fine powder of magnesium oxide and 50 parts by weight of plasticizer dioctyl phthalate were mixed in a mixer and then heated and kneaded at 200±1O°C. Extrusion molding was performed from Shina.

しかる後可塑剤をトリクロルエチレン溶液で抽出して微
孔を形成した。このようにして得られた微多孔短繊維5
1と酸化カドミウム200pとを混合して後154のポ
リビニルアルコールを80dのエチレングリコールに溶
解させた溶液を添加し混線を行う。かくして得られたペ
ーストをニッケルメッキした鉄のパンチングメタルの両
面から塗着し、加熱乾燥して目的の極板を得た。
Thereafter, the plasticizer was extracted with a trichlorethylene solution to form micropores. Microporous short fibers obtained in this way 5
After mixing 1 and 200p of cadmium oxide, a solution of polyvinyl alcohol (154) dissolved in 80d (ethylene glycol) was added to perform crosstalk. The thus obtained paste was applied to both sides of a nickel-plated iron punching metal and dried by heating to obtain the desired electrode plate.

次に本発明により得られた電池Aと従来の電池Bとの6
5”C15日間放置後の0.33cmA充雷性能充電較
した結果は図面の通りであり、本発明により得られた電
池Aは充電性の向上が図れたことが判明する。なお電池
は何れもN1200So形である。
Next, battery A obtained according to the present invention and conventional battery B
The charging performance of 0.33 cmA after being left for 15 days on a 5"C is as shown in the drawing, and it is clear that battery A obtained according to the present invention has improved chargeability. It is N1200So type.

発明の効果 上述したように本発明によれば、マグネシウム化合物を
含有せるポリオレフィン系の微多孔短繊維をペースト式
カドミウム陰極板に添加することとしたため、ペースト
式カドミウム陰極板の活物質粒子が充放電を繰返し行っ
たり、放電状態で放置しても粗大化しにくくなり、充電
電圧の上昇はほとんどなくなり充電性が大幅に向上する
等工業的価値共だ大なるものである。
Effects of the Invention As described above, according to the present invention, polyolefin microporous short fibers containing a magnesium compound are added to the paste-type cadmium cathode plate, so that the active material particles of the paste-type cadmium cathode plate can be charged and discharged. Even if this is repeated or left in a discharged state, it will not become coarse, the charging voltage will hardly rise, and the charging performance will be greatly improved, which has great industrial value.

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

図面は本発明によるペースト式陰極板を用いた電池と従
来の電池との充電曲線図である。
The drawing is a charging curve diagram of a battery using the paste-type cathode plate according to the present invention and a conventional battery.

Claims (1)

【特許請求の範囲】[Claims] マグネシウム化合物の微粉末を含有せるポリオレフィン
系の微多孔短繊維と酸化カドミウムを主成分とする活物
質とを粘着剤の水溶液あるいは有機溶剤溶液で混練した
ペーストを多孔板に塗着乾燥することを特徴とするアル
カリ蓄電池用カドミウム陰極板の製造方法。
It is characterized by applying a paste made by kneading polyolefin microporous short fibers containing fine powder of a magnesium compound and an active material mainly composed of cadmium oxide with an aqueous adhesive solution or an organic solvent solution onto a porous plate and drying it. A method for manufacturing a cadmium cathode plate for an alkaline storage battery.
JP61307338A 1986-12-23 1986-12-23 Method for manufacturing cadmium cathode plate for alkaline storage battery Expired - Lifetime JPH0619988B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61307338A JPH0619988B2 (en) 1986-12-23 1986-12-23 Method for manufacturing cadmium cathode plate for alkaline storage battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61307338A JPH0619988B2 (en) 1986-12-23 1986-12-23 Method for manufacturing cadmium cathode plate for alkaline storage battery

Publications (2)

Publication Number Publication Date
JPS63160166A true JPS63160166A (en) 1988-07-02
JPH0619988B2 JPH0619988B2 (en) 1994-03-16

Family

ID=17967924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61307338A Expired - Lifetime JPH0619988B2 (en) 1986-12-23 1986-12-23 Method for manufacturing cadmium cathode plate for alkaline storage battery

Country Status (1)

Country Link
JP (1) JPH0619988B2 (en)

Also Published As

Publication number Publication date
JPH0619988B2 (en) 1994-03-16

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