JPS58206068A - Manufacture of negative plate for lead storage battery - Google Patents

Manufacture of negative plate for lead storage battery

Info

Publication number
JPS58206068A
JPS58206068A JP57089518A JP8951882A JPS58206068A JP S58206068 A JPS58206068 A JP S58206068A JP 57089518 A JP57089518 A JP 57089518A JP 8951882 A JP8951882 A JP 8951882A JP S58206068 A JPS58206068 A JP S58206068A
Authority
JP
Japan
Prior art keywords
active material
negative
capsules
paste
boiling
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
JP57089518A
Other languages
Japanese (ja)
Inventor
Toshio Henmi
逸見　敏夫
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 JP57089518A priority Critical patent/JPS58206068A/en
Publication of JPS58206068A publication Critical patent/JPS58206068A/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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • 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

Abstract

PURPOSE:To increase the porosity of a negative active material, and enhance the utilization rate of the active material by adding heat-expanded capsules containing a low-boiling-point hydrocarbon to make a negative paste. CONSTITUTION:After lead oxide powder is combined with both a negative expander and heat-expanded micro-capsules containing a low-boiling-point hydrocarbon, the mixture is subjected to sufficient dry mixing, then kneaded after water or dilute sulfuric acid is added, thereby preparing a negative paste. The thus prepared paste, after being packed into a grid, is heated to cause the microcapsules to bubble so that a given bubbling expansion coefficient is achieved, the heated so as to diffuse the low-boiling-point hydrocarbon contained in the capsules completely outside them an to decompose the shell walls of the capsules, thereby manufacturing a negative plate in which many fine holes are formed in its active material. By arbitrarily selecting the grain diameter of the microcapsules which have not bubbled, the amount of the capsules added and heating temperature which determines the bubbling expansion coefficient, the distribution of the fine holes of the active material as well as the porosity of the active material can be easily varied.

Description

【発明の詳細な説明】 本発明は鉛蓄電池用陰極板の製造法の改良に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved method for manufacturing a cathode plate for a lead-acid battery.

従来陰極活物質の利用率を向上をせしめるには、ペース
トの含水量を多くすることにより活物質の多孔度を増大
させる方法か採用されてきた。しかし、この方法では、
ペーストの含水量を多（して行くとペーストか軟化し、
格子体に充填されたペーストか、極板製造装置の充填ベ
ルトから離れる際に脱したり、ペースト充填柊了後の極
板を搬送中にペーストか垂れ下がる等の欠点を有してい
る。従って、ペーストの含水量をかなり多くして活物質
の多孔度を著しく増大せしめることは不可能であり、活
物質の利用率を向上させ活物質量を大幅に低減すること
は困難であった。Conventionally, in order to improve the utilization rate of a cathode active material, a method has been adopted in which the porosity of the active material is increased by increasing the water content of the paste. However, with this method,
Increase the water content of the paste (the paste will soften,
There are drawbacks such as the paste filled in the grid body falling off when separated from the filling belt of the plate manufacturing apparatus, and the paste sagging while transporting the plate after filling with paste. Therefore, it has been impossible to significantly increase the water content of the paste to significantly increase the porosity of the active material, and it has been difficult to improve the utilization rate of the active material and significantly reduce the amount of active material.

本発明は上記の如き点に鑑み、陰極活物質の多孔度を増
大せしめ、活物質の利用率を著しく向上せしめることに
ある。In view of the above points, the present invention aims to increase the porosity of a cathode active material and significantly improve the utilization rate of the active material.

次に本発明の一実施例を説明する。Next, one embodiment of the present invention will be described.

酸化鉛粉末に陰極エキスパンダーと共１こ低沸点炭化水
素を内包する熱膨張性マイクロカブセ。A thermally expandable microcapsule containing one low boiling point hydrocarbon in lead oxide powder and a cathode expander.

ルを添加し、十分に乾式混合した抜水および希硫酸を加
え混練して陰極用ペーストを作製する。A paste for the cathode is prepared by adding the drained water and dilute sulfuric acid that have been thoroughly dry-mixed and kneading.

このペーストを格子体に充填した後所定の発泡膨張率に
なるよう化１００℃にて１分間加熱してマイクロカプセ
ルを発泡させ、更１こ］２０℃３０分間加熱して内包剤
である低沸点炭化水素を完全Ｉこカプセル外に拡散させ
ると共にカプセルの殻壁を分解せしめて活物質中に多数
の細孔か形成された陰極板を製造する。After filling the lattice with this paste, heat it at 100°C for 1 minute to foam the microcapsules to a predetermined foaming expansion rate. Hydrocarbons are completely diffused out of the capsule and the shell wall of the capsule is decomposed to produce a cathode plate in which a large number of pores are formed in the active material.

本発明の特徴は、未発泡のマイクロカプセルの粒子径、
添加量あるいは発泡膨張率を決定オる加熱温度を任意番
こ選択すること１こより、活物質の細孔分布、多孔度を
容品に変えることかでき、かつ内包剤、カプセル殻壁は
加熱ｌこより迅やかｉこ分解飛散するので、なんら悪影
響を及ぼすことはない。また現在の製造装置を用い工程
を変えることなく目的を達成することかでき。The characteristics of the present invention are the particle size of unfoamed microcapsules,
The pore distribution and porosity of the active material can be changed by selecting an arbitrary heating temperature that determines the amount added or the foaming expansion rate. Since it decomposes and scatters more quickly, it does not cause any adverse effects. In addition, the objective can be achieved using current manufacturing equipment without changing the process.

発泡条件である加熱温度の制御も比較的簡単である。It is also relatively easy to control the heating temperature, which is a foaming condition.

第１図は陰極活物質の多孔度および細孔分布の測定結果
を示し、Ａは本発明による陰極板。FIG. 1 shows the measurement results of the porosity and pore distribution of the cathode active material, and A is the cathode plate according to the present invention.

Ｂは従来の陰極板である。第２図は一１５℃高率放電時
の陰極活物質利用率を示し、Ａは本発明による陰極板、
Ｂは従来の陰極板である。B is a conventional cathode plate. Figure 2 shows the utilization rate of the cathode active material during high rate discharge at -15°C, where A is the cathode plate according to the present invention;
B is a conventional cathode plate.

上述のよう１こ本発明による陰極板は多孔度か著しく増
大し、利用率も向上する等工業的価鎮甚た大なるもので
ある。As mentioned above, the cathode plate according to the present invention has a significantly increased porosity, improved utilization rate, and has great industrial value.

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

第１図は陰極活物質の多孔度および細孔分布の比較図、
第２図は低温高率放電時の陰極活物質利用率の比較図で
ある。 幣１図 Δ 細孔（ｐｍ）Figure 1 is a comparison diagram of the porosity and pore distribution of cathode active materials;
FIG. 2 is a comparison diagram of the utilization rate of the cathode active material during low-temperature, high-rate discharge. Figure 1 Δ Pore (pm)

Claims (1)

【特許請求の範囲】[Claims] 陰極ペーストに低沸点炭化水素を内包する熱膨張性カプ
セルを添加することを特徴とする鉛蓄電池用陰極板の製
造法。A method for producing a cathode plate for a lead-acid battery, characterized by adding a thermally expandable capsule containing a low boiling point hydrocarbon to the cathode paste.
JP57089518A 1982-05-26 1982-05-26 Manufacture of negative plate for lead storage battery Pending JPS58206068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57089518A JPS58206068A (en) 1982-05-26 1982-05-26 Manufacture of negative plate for lead storage battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57089518A JPS58206068A (en) 1982-05-26 1982-05-26 Manufacture of negative plate for lead storage battery

Publications (1)

Publication Number Publication Date
JPS58206068A true JPS58206068A (en) 1983-12-01

Family

ID=13973012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57089518A Pending JPS58206068A (en) 1982-05-26 1982-05-26 Manufacture of negative plate for lead storage battery

Country Status (1)

Country Link
JP (1) JPS58206068A (en)

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