JPS5855623B2 - Method for preparing nickel slurry for sintered battery substrates - Google Patents
Method for preparing nickel slurry for sintered battery substratesInfo
- Publication number
- JPS5855623B2 JPS5855623B2 JP54017010A JP1701079A JPS5855623B2 JP S5855623 B2 JPS5855623 B2 JP S5855623B2 JP 54017010 A JP54017010 A JP 54017010A JP 1701079 A JP1701079 A JP 1701079A JP S5855623 B2 JPS5855623 B2 JP S5855623B2
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- nickel slurry
- sintered
- preparing nickel
- nickel
- 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
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- 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)
- Powder Metallurgy (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Description
【発明の詳細な説明】
本発明は、電池用焼結基板のためのニッケルスラリーの
調整法に関するもので、その目的とするところは、ニッ
ケルスラリー（これは通常スラリー又はペーストを意味
する）が、その放置中に高粘度のゲル状になっても、３
０〜５０℃の高温雰囲気中でエージングする事により、
再使用可能としてニッケルスラリーの生産管理の幅を広
げ、使用原材量のロスを少なくし、焼結基板の製造工程
中での品質安定化をはかる事にある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preparing a nickel slurry for sintered battery substrates, with the object being that a nickel slurry (which usually means a slurry or paste) is Even if it becomes a highly viscous gel while left,
By aging in a high temperature atmosphere of 0 to 50℃,
The aim is to expand the range of production management of nickel slurry as it is reusable, reduce loss of raw material used, and stabilize quality during the manufacturing process of sintered substrates.
従来、この種の焼結基板製造法は、カーボニルニッケル
粉末と、主にカルボキシメチルセルローズからなる有機
質バインダー水溶液とを混合したスラリー中に多孔性金
属芯体を通過させ、芯体の両面にスラリーを所定厚で塗
着した後、これを乾燥し、次いで、窒素あるいは、水素
等の非酸化性雰囲気中で焼結していた。Conventionally, this type of sintered substrate manufacturing method involves passing a porous metal core through a slurry containing a mixture of carbonyl nickel powder and an aqueous organic binder solution mainly composed of carboxymethyl cellulose, and applying the slurry to both sides of the core. After coating to a predetermined thickness, it is dried and then sintered in a non-oxidizing atmosphere such as nitrogen or hydrogen.
この際、カルボキシメチルセルローズからなる有機質バ
インダー水溶液とカーボニルニッケル粉末とを混合した
スラリー（ペースト）は、これを大量に作成して長期間
放置しておくと、高粘度を呈してゲル状になり、芯体へ
塗着し、乾燥する途中で載板表面がヒビ割れを起こすた
め、この様な長期間放置したスラリーを使用する□は、
事実上不可能であった。At this time, if a slurry (paste) made by mixing an aqueous organic binder solution made of carboxymethyl cellulose and carbonyl nickel powder is prepared in large quantities and left for a long period of time, it will become highly viscous and gel-like. When applying slurry to the core and drying, the surface of the plate will crack, so if you use slurry that has been left for a long time,
It was virtually impossible.
又このスラリーのゲル化は、カルボキシメチルセルロー
ズからなる有機質バインダー水溶液が、長期間の放置に
よってゲル化するために起こる現象であり、このゲル化
は、スラリーを撹拌する弔により図に示す様に、放置前
の粘度とほぼ同じ粘度にもどる。This gelation of the slurry is a phenomenon that occurs when an organic binder aqueous solution consisting of carboxymethyl cellulose gels when left for a long period of time.This gelation occurs when the slurry is stirred as shown in the figure. The viscosity returns to almost the same as before leaving it.
しかしこのニッケルスラリーは、再撹拌すると、カーボ
ニルニッケル粉末を粉砕してさらにその粒度を小さくし
、み掛比重を必要以上に高くする事になり、焼結基板の
多孔度を下げる事になって好ましくない。However, if this nickel slurry is re-stirred, the carbonyl nickel powder will be pulverized and the particle size will be further reduced, making the apparent specific gravity higher than necessary and lowering the porosity of the sintered substrate, which is not desirable. do not have.
本発明は、上記の欠点を３０〜５０℃の温度雰囲気中に
１０〜２０時間静置してエージングすることで除去した
ものであり、実施例により以下説明する。The present invention eliminates the above-mentioned drawbacks by aging the product by leaving it in an atmosphere at a temperature of 30 to 50° C. for 10 to 20 hours, and will be described below with reference to Examples.
ゲル化したニッケルスラリーを、３０℃〜５０℃の高温
雰囲気中で、約１０時間〜１５時間エージングする事に
より、ニッケルスラリーの粘度は、次第に低下してゆき
、芯体への塗着時にはゲル化前の粘度になり、従って塗
着後の乾燥中の基板のヒビ割れを起こさず又、焼結基板
の多孔度を下げる事がなく、一度に多量に作成し長期間
放置することでゲル化したニッケルスラリーを再使用可
能にする事ができ、原材量のロスを少なくする事が可能
となる。By aging the gelled nickel slurry in a high-temperature atmosphere of 30°C to 50°C for about 10 to 15 hours, the viscosity of the nickel slurry gradually decreases, and it gels when applied to the core. The viscosity is the same as before, so it does not cause cracks in the substrate during drying after application, and it does not reduce the porosity of the sintered substrate. The nickel slurry can be made reusable and the amount of raw material lost can be reduced.
これは３０〜５０℃の温度雰囲気中に長時間スラリーを
静置することで、長期間の放置中に生じたスラリー中で
のカルボキシメチルセルローズ分子の凝集を解いてスラ
リー全体の粘度を下げ、塗着し易い状態に戻すからでは
ないかと思われる。This is done by allowing the slurry to stand for a long time in an atmosphere at a temperature of 30 to 50°C, which loosens the agglomeration of carboxymethyl cellulose molecules in the slurry that occur during the long-term storage, lowers the viscosity of the entire slurry, and coats the slurry. I think this is because it returns it to a state where it is easy to wear.
なおこの際の温度は３０℃よりも低いとカルボキシメチ
ルセルローズの凝集を解きに＜＜、又５０℃よりも高い
と分散水の蒸発量が多くなるので好ましくない。It should be noted that if the temperature at this time is lower than 30°C, it will be difficult to deagglomerate the carboxymethyl cellulose, and if it is higher than 50°C, the amount of evaporation of the dispersion water will increase, which is not preferable.
さらにこの粘度低下の調整時にこれを促進するよう撹拌
することはニッケル粉末を再粉砕するので避けるべきで
あり、これに代るべく１０〜２０時間の長時間加熱する
ことがスラリーの組成を変化させない上からも好ましい
方法である。Furthermore, stirring to promote this viscosity reduction adjustment should be avoided as it re-grinds the nickel powder; instead, heating for a long time of 10 to 20 hours will not change the composition of the slurry. This is also the preferred method.
図はスラリーの放置時間と粘度の関係を示す。 The figure shows the relationship between slurry standing time and viscosity.
Claims (1)
を分散させたスラリーを、長期間放置後において３０〜
５０℃の温度雰囲気中に１０〜２０時間静置することで
前記スラリーの粘度を下げて再使用可能にしたことを特
徴とする電池用焼結基板のためのニッケルスラリーの調
整法。1 A slurry in which carbonyl nickel powder is dispersed in an aqueous organic binder is left for a long period of time and then
A method for preparing a nickel slurry for a sintered substrate for a battery, characterized in that the viscosity of the slurry is lowered by allowing it to stand still in an atmosphere at a temperature of 50° C. for 10 to 20 hours, thereby making it reusable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54017010A JPS5855623B2 (en) | 1979-02-15 | 1979-02-15 | Method for preparing nickel slurry for sintered battery substrates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54017010A JPS5855623B2 (en) | 1979-02-15 | 1979-02-15 | Method for preparing nickel slurry for sintered battery substrates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55109375A JPS55109375A (en) | 1980-08-22 |
| JPS5855623B2 true JPS5855623B2 (en) | 1983-12-10 |
Family
ID=11932022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54017010A Expired JPS5855623B2 (en) | 1979-02-15 | 1979-02-15 | Method for preparing nickel slurry for sintered battery substrates |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855623B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6041762A (en) * | 1983-08-18 | 1985-03-05 | Japan Storage Battery Co Ltd | Manufacture of sintered substrate for alkaline battery |
| JPS6074265A (en) * | 1983-09-29 | 1985-04-26 | Japan Storage Battery Co Ltd | Manufacture of sintered substrate for alkali battery |
-
1979
- 1979-02-15 JP JP54017010A patent/JPS5855623B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55109375A (en) | 1980-08-22 |
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