JPS6042586B2 - Method for manufacturing sintered substrate for storage battery electrode - Google Patents
Method for manufacturing sintered substrate for storage battery electrodeInfo
- Publication number
- JPS6042586B2 JPS6042586B2 JP51135525A JP13552576A JPS6042586B2 JP S6042586 B2 JPS6042586 B2 JP S6042586B2 JP 51135525 A JP51135525 A JP 51135525A JP 13552576 A JP13552576 A JP 13552576A JP S6042586 B2 JPS6042586 B2 JP S6042586B2
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- nickel
- sintered
- storage battery
- dried
- 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.)
- Expired
Links
Classifications
-
- 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
- Powder Metallurgy (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Description
【発明の詳細な説明】
本発明はニッケル−カドミウムアルカリ蓄電池などの電
極用に使用される多孔質の焼結基板の製造方法に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a porous sintered substrate used for electrodes such as nickel-cadmium alkaline storage batteries.
従来ニッケル−カドミウムアルカリ蓄電池などの電極用
に使用される焼結基板は、焼結用ニッケル粉とカルボキ
シメチルセルロース(CMC)などの水溶性有機質粘着
剤水溶液とからなるスラリーを、帯状の多孔金属板の両
面に塗布充填した後赤外線などで乾燥し、ついでこれを
焼結することにより製造される。Conventionally, sintered substrates used for electrodes in nickel-cadmium alkaline storage batteries, etc., are made by applying a slurry consisting of nickel powder for sintering and an aqueous solution of a water-soluble organic adhesive such as carboxymethyl cellulose (CMC) to a strip-shaped porous metal plate. It is manufactured by coating and filling both sides, drying it with infrared rays, and then sintering it.
しかるに乾燥時にスラリーは、その表面から乾燥される
のでスラリーの表面と内部とでは乾燥状況が夫々異なり
従来の方法ではこれが原因となつて乾燥したスラリーの
表面に−亀裂が発生しやすい欠点があつた。とくに高温
で短時間のうちに乾燥した場合あるいはスラリーの塗布
厚さが厚い場合にこの傾向が著しい。このようなことか
らなるべく低温で長時間かけて乾燥処理を行なえばスラ
リー層に亀裂を生じないが、こ町のようにすると生産性
が低下し工業的に連続生産するうえで適当ではない。本
発明は上述した事情に鑑みてなされたもので、その目的
とするところは、スラリーにカーボン繊維または金属繊
維を混合して、このスラリーを塗着した多孔金属板を乾
燥、焼結するに際して該繊維でスラリーの強度を高め乾
燥したスラリー層の表面に亀裂などが発生しない蓄電池
電極用焼結基板の製造方法を提供するものである。However, during drying, the slurry is dried from its surface, so the drying conditions are different between the surface and the inside of the slurry, and this has caused cracks to easily form on the surface of the dried slurry in conventional methods. . This tendency is particularly noticeable when the slurry is dried at high temperatures in a short period of time or when the slurry is applied thickly. For this reason, cracks will not occur in the slurry layer if the drying treatment is carried out at as low a temperature as possible for a long time, but this method reduces productivity and is not suitable for continuous industrial production. The present invention has been made in view of the above-mentioned circumstances, and its purpose is to mix carbon fibers or metal fibers into a slurry, and to dry and sinter a porous metal plate coated with this slurry. The present invention provides a method for manufacturing a sintered substrate for a storage battery electrode in which the strength of the slurry is increased with fibers and cracks do not occur on the surface of the dried slurry layer.
すなわち本発明は多孔金属板焼結用ニッケル粉と有機質
粘着剤水溶液とカーボン繊維または金属繊維とを混和し
たスラリーを塗布充填した後、こJれを乾燥・焼結する
ことを特徴とする方法である。That is, the present invention is a method characterized by coating and filling a slurry of a mixture of nickel powder for sintering a porous metal plate, an organic adhesive aqueous solution, and carbon fiber or metal fiber, and then drying and sintering the slurry. be.
以下本発明方法を詳細に説明する。The method of the present invention will be explained in detail below.
まずカーボニルニツケル粉など密度0.5〜0.7ダ/
ccの焼結用ニッケル粉を30〜印重量部と2〜4%
のカルボキシメチルセルロース水溶液などの有機質粘着
剤水溶液を50〜7腫量部とを混練して従来方法で作製
されているニッケルスラリーと同様の組成の混和物を作
製する。First, carbonyl nickel powder with a density of 0.5 to 0.7 da/
cc of nickel powder for sintering 30~marked weight part and 2~4%
A mixture having the same composition as a nickel slurry prepared by a conventional method is prepared by kneading an aqueous solution of an organic adhesive such as an aqueous solution of carboxymethyl cellulose with 50 to 7 parts of the mass.
ついて上記混和物に更にカーボン繊維又はニッケル繊維
などの金属繊維を単独又は複合して加えて、これを均一
に混ぜ本発明方法に係るニッケルスラリーを作製する。
この楊合各繊維の長さはこれを均一に混合する場合の作
業性を考慮して5〜2077!77!程度が好ましい。
またその混合割合は乾燥したスラリー層の補強作用が大
きく、しかも焼結層中に含まれるニッケル分の含有量を
相対的に低下させない範囲が好ましく、例えばニッケル
粉と有機質粘着剤水溶液との混和物1凹重量部に対して
約10重量部以下が好適である。ついで上記スラリーを
多孔金属板に塗着して、これを赤外線・熱線などにより
乾燥する。Then, metal fibers such as carbon fibers or nickel fibers are added alone or in combination to the above mixture, and the mixture is uniformly mixed to prepare a nickel slurry according to the method of the present invention.
The length of each fiber of this Yang combination is 5 to 2077!77! considering the workability when uniformly mixing these fibers. degree is preferred.
The mixing ratio is preferably within a range that has a large reinforcing effect on the dried slurry layer and does not relatively reduce the nickel content contained in the sintered layer. For example, a mixture of nickel powder and an organic adhesive aqueous solution is preferable. Approximately 10 parts by weight or less is suitable for 1 part by weight of the recess. Next, the slurry is applied to a porous metal plate and dried using infrared rays or heat rays.
この場合多孔金属板はニッケルメッキした帯状鉄板にパ
ンチング加工したもの、帯状のニツケルラスシートなど
通常用いられている帯板である。このようにスラリーを
塗着した多孔金属板を乾燥すると乾燥が表面から進行し
、スラリー層の表面でこれを引き裂く方向に応力が加わ
るが該スラリー層には繊維がからまつた状態で含まれて
いるため、この応力を各繊維で受け表面に亀裂が発生し
ない。とくに160〜180℃程度の高温で5〜1紛程
度の短時間のうちに乾燥処理を行なう場合あるいは1.
0〜1.4―程度の厚いスラリー層を乾燥処理する場合
など亀裂が発生しやすい場合においても良好にスラリー
層を乾燥することができる。ついでスラリー層を乾燥し
た多孔金属板を、水素ガス・アンモニア分解ガスなどの
還元性雰囲気中において850〜950℃て焼結して焼
結基板を製造する。In this case, the porous metal plate is a commonly used band plate such as a punched nickel-plated band iron plate or a band-shaped nickel lath sheet. When a porous metal plate coated with slurry is dried in this way, the drying progresses from the surface, and stress is applied to the surface of the slurry layer in the direction of tearing it, but the slurry layer contains fibers in a tangled state. Therefore, each fiber receives this stress and no cracks occur on the surface. Particularly when drying at a high temperature of about 160 to 180°C in a short time of about 5 to 1 powder, or 1.
Even in cases where cracks are likely to occur, such as when drying a slurry layer as thick as 0 to 1.4 mm, the slurry layer can be dried satisfactorily. Then, the porous metal plate with the slurry layer dried is sintered at 850 to 950°C in a reducing atmosphere such as hydrogen gas or ammonia decomposition gas to produce a sintered substrate.
この場合は繊維と焼結用金属粉および多孔金属板とが結
着して焼結層の亀裂を防止するとともに焼結基板の機械
的強度を高める。またその導電性が良好に維持される。
次に本発明方法の実施例を説明する。In this case, the fibers, the metal powder for sintering, and the porous metal plate are bound together to prevent cracks in the sintered layer and to increase the mechanical strength of the sintered substrate. Moreover, its conductivity is maintained well.
Next, examples of the method of the present invention will be described.
焼結用ニッケル粉として密度0.5〜0.7q/Ccの
カーボニルニツケル粉を用い、有機質粘着剤水溶液とし
て3%のカルボキシメチルセルロース水溶液を用い、カ
ーボニルニツケル粉4睡量部にカルボキシメチルセルロ
ース水溶液60重量部を加えて、これを混練した。Carbonyl nickel powder with a density of 0.5 to 0.7 q/Cc was used as the nickel powder for sintering, and a 3% carboxymethyl cellulose aqueous solution was used as the organic adhesive aqueous solution. part was added and kneaded.
ついでこの混練物に長さが約10WLのニッケル繊維を
該混練物10睡量部に対し0.05重量部の割合で均一
に混合してニッケルスラリーを作製した。このスラリー
をパンチングした厚さ0.1w0nの帯状ニッケル板の
両面に夫々177!77!の厚さで塗布充填した後これ
に赤外線を照射して160〜180℃で5分間乾燥処理
した。乾燥したスラリーを観察した結果、その表面には
なんら亀裂が生じていなかつた。このように乾燥したス
ラリー層を形成した多孔金属板を850〜950℃のア
ンモニア分解ガス雰囲気中で焼結して厚さ1.3wn1
気孔率80%の焼結基板を得た。これに対し繊維を含ま
ない従来のニッケルスラリーを用いて上記実施例と同様
にしてこれを多孔金属板に塗着した後、乾燥・焼結した
結果、多数の亀裂が発生した。Next, nickel fibers having a length of about 10 WL were uniformly mixed into this kneaded material at a ratio of 0.05 parts by weight per 10 parts of the kneaded material to prepare a nickel slurry. 177!77 on both sides of a 0.1w0n thick strip nickel plate punched with this slurry! After coating and filling it to a thickness of 1,000 yen, it was irradiated with infrared rays and dried at 160 to 180° C. for 5 minutes. As a result of observing the dried slurry, no cracks were observed on its surface. The porous metal plate on which the dried slurry layer was formed was sintered in an ammonia decomposition gas atmosphere at 850 to 950°C to form a layer with a thickness of 1.3wn1.
A sintered substrate with a porosity of 80% was obtained. On the other hand, when a conventional nickel slurry containing no fibers was applied to a porous metal plate in the same manner as in the above example, and then dried and sintered, many cracks were generated.
またこのようにして得られた焼結基板に夫々ニッケル活
物質及びカドミウム活物質を含浸して陰・陽極板を製造
し、これで極板を組立てて得られたアルカリ蓄電池の電
池特性を調べたが本発明方法によるものは従来方法によ
るものと比べてなんら差違がなかつた。In addition, the sintered substrates obtained in this way were impregnated with nickel active material and cadmium active material to produce negative and anode plates, and the battery characteristics of the alkaline storage battery obtained by assembling the plates with these plates were investigated. However, there was no difference between the method of the present invention and the conventional method.
以上の結果から明らかなように本発明方法によればスラ
リーにカーボン繊維または金属繊維を混在して、これを
多孔金属板に塗着するようにしたので焼結基板の機械的
強度を高めることができ、スラリー層を高温で短時間の
うちに乾燥する場合、あるいは厚いスラリ」層を乾燥す
る場合においても表面に亀裂などが発生せず、また、こ
れら表面と内部とで乾燥状況の異なつたものを焼結して
も亀裂が発生しないので良好な焼結基板を短時゛間で量
産できるなど顕著な効果を奏する。As is clear from the above results, according to the method of the present invention, the mechanical strength of the sintered substrate can be increased because carbon fibers or metal fibers are mixed in the slurry and applied to the porous metal plate. Even when drying a slurry layer at high temperature in a short time, or when drying a thick slurry layer, cracks do not occur on the surface, and the drying conditions are different between the surface and the inside. Since cracks do not occur even when sintered, good sintered substrates can be mass-produced in a short period of time, and other remarkable effects are achieved.
Claims (1)
液とカーボン繊維または金属繊維とを混和したスラリー
を塗布充填した後、これを乾燥焼結することを特徴とす
る蓄電池電極用焼結基板の製造方法。1. A sintered substrate for a storage battery electrode, which is characterized in that a porous metal plate is coated with a slurry of a mixture of nickel powder for sintering, an aqueous organic adhesive solution, and carbon fibers or metal fibers, and then dried and sintered. Production method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51135525A JPS6042586B2 (en) | 1976-11-11 | 1976-11-11 | Method for manufacturing sintered substrate for storage battery electrode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51135525A JPS6042586B2 (en) | 1976-11-11 | 1976-11-11 | Method for manufacturing sintered substrate for storage battery electrode |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5359841A JPS5359841A (en) | 1978-05-30 |
JPS6042586B2 true JPS6042586B2 (en) | 1985-09-24 |
Family
ID=15153799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51135525A Expired JPS6042586B2 (en) | 1976-11-11 | 1976-11-11 | Method for manufacturing sintered substrate for storage battery electrode |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6042586B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5569967A (en) * | 1978-11-22 | 1980-05-27 | Matsushita Electric Ind Co Ltd | Manufacturing method for sintered base plate for alkali storage battery |
JPS6152383A (en) * | 1984-08-21 | 1986-03-15 | Japan Storage Battery Co Ltd | Electrochemical device using cation exchange membrane as electrolyte |
JP2799572B2 (en) * | 1988-07-08 | 1998-09-17 | 東海カーボン株式会社 | Electrode substrate for battery |
DE102008042415B3 (en) * | 2008-09-26 | 2010-05-20 | Andreas Hofenauer | Metallic semi-finished product, process for the production of materials and semi-finished products and their uses |
-
1976
- 1976-11-11 JP JP51135525A patent/JPS6042586B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5359841A (en) | 1978-05-30 |
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