JPS58206067A - Manufacture of negative plate for lead storage battery - Google Patents

Manufacture of negative plate for lead storage battery

Info

Publication number
JPS58206067A
JPS58206067A JP57088438A JP8843882A JPS58206067A JP S58206067 A JPS58206067 A JP S58206067A JP 57088438 A JP57088438 A JP 57088438A JP 8843882 A JP8843882 A JP 8843882A JP S58206067 A JPS58206067 A JP S58206067A
Authority
JP
Japan
Prior art keywords
paste
cellulose powder
pulverized cellulose
active material
subjected
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
JP57088438A
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 JP57088438A priority Critical patent/JPS58206067A/en
Publication of JPS58206067A publication Critical patent/JPS58206067A/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

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 enhance the utilization rate of a negative active material by adding pulverized cellulose powder to a negative paste. CONSTITUTION:After pulverized cellulose powder and a negative expander are added to lead oxide powder, the mixture is subjected to dry mixing, then subjected to water kneading by gradually adding a given amount of water, thereby making the pulverized cellulose powder to be swollen and held among particles contained in the paste. Next, after the paste is subjected to acid kneading by gradually adding dilute sulfuric acid, the kneaded mixture is subjected to finishing kneading, then a negative plate is manufactured. Since the pulverized cellulose powder is swollen and held among the particles of the active material owing to the hygroscopic property of cellulose, the surface area of the active material is increased, and any dropping down of the paste can be prevented even when its moisture content is high owing to the flow resistance derived from the bar-like form of the pulverized cellulose powder. Consequently, owing to the addition of the pulverized cellulose powder, the three-dimensional structure of the paste is stabilized, and any generation of cracks which might be caused by the contractile deformation during drying process can be prevented.

Description

【発明の詳細な説明】 本発明は鉛蓄電池用隘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 lead-acid battery cap plate.

従来陰極活物質の利用率を向上せしめるには。To improve the utilization rate of conventional cathode active materials.

物 ペーストの含水量を増して活質の多孔度を上げΔ 活物質の表面積を大きくする方法か採用されてきた。thing Increasing the water content of the paste increases the porosity of the active Δ A method of increasing the surface area of the active material has been adopted.

しかし、ペーストの含水量を多くしすぎるとペーストか
スラリー状化なり格子体に充填することかできなかった
り、また仮に充填可能なペーストであってもペーストか
軟らかいため搬送中に格子体から垂下する等の欠点を有
している。However, if the water content of the paste is too high, the paste becomes a slurry and cannot be filled into the lattice, and even if the paste can be filled, it is too soft and may droop from the lattice during transportation. It has the following disadvantages.

一方、ペーストの含水量か多いため、醜極板の乾燥工程
において活物質に亀裂か生じて強度か弱くなり、格子体
から活物質か容易１こ脱落する現象も生じている。従っ
て、ペーストの含水量を増して利用率を向上するには極
板製造上の諸問題点から限界かあるのか現状である。On the other hand, due to the high water content of the paste, cracks occur in the active material during the drying process of the ugly electrode plate, resulting in weakened strength, and the active material easily falls off from the lattice. Therefore, at present, there are limits to improving the utilization rate by increasing the water content of the paste due to various problems in manufacturing the electrode plate.

本発明は上記の如き点−こ艦み、陰極活物質の利用率を
著しく向上せしめることにあるつ次ζこ本発明の一実施
例を説明する。In view of the above points, the present invention aims to significantly improve the utilization rate of the cathode active material.An embodiment of the present invention will now be described.

酸化鉛重量に対して２パーセントの５０ミクロン程度の
粒子径をもつセルロース微粉末を陰極エキスパンダーと
共に酸化鉛粉末１こ加えて５分間乾式混合した後所定量
の水を徐々に加え１０分間水練りを行ない、微粉末を膨
潤ならしめペースト中の粒子間に保持せしめ、さらに比
重１．２６０の希硫酸を徐々ζこ加えて１０分間酸練り
し、最後に１０分間仕上げ練りを行なった後従来の工程
に従い隘極板を製造する。Add 1 piece of lead oxide powder and a cathode expander together with 2% cellulose powder having a particle size of about 50 microns based on the weight of lead oxide, dry mix for 5 minutes, then gradually add the specified amount of water and mix with water for 10 minutes. The fine powder was swollen and held between the particles in the paste, and then diluted sulfuric acid with a specific gravity of 1.260 was gradually added and acid kneaded for 10 minutes.Finally, after 10 minutes of finishing kneading, the conventional process was carried out. Manufacture the pole plate according to the following.

本発明の特徴としては、セルロースｔｖ　吸ｍ性を利用
すること洸より、セルロース微粉末を膨潤せしめ活物質
粒子間に保持すること１こより。A feature of the present invention is that cellulose fine powder is swollen and held between active material particles by utilizing cellulose tv absorption properties.

活物質の表面積を増大ならしめ、かつセルロース微粉末
の棒状形態からくる流動抵抗のため。This is due to the increased surface area of the active material and the flow resistance due to the rod-like shape of the fine cellulose powder.

従来よりも５％程度多い含水量のペーストを用いてもペ
ーストの垂れを防止することかでき。It is possible to prevent the paste from sagging even when using a paste with a water content about 5% higher than that of the conventional method.

またセルロース微粉末添加によって三次元的構造の安定
化を図り、乾燥工程における収縮変形による亀裂の発生
を防止することかできる。しかも、セルロース微粉末は
電解液中で加水分解されるために、活物質粒子間に空隙
か多数生じて電解液の拡散を容易ならしめることかでき
る。Furthermore, by adding fine cellulose powder, it is possible to stabilize the three-dimensional structure and prevent the occurrence of cracks due to shrinkage and deformation during the drying process. Moreover, since the cellulose fine powder is hydrolyzed in the electrolytic solution, a large number of voids are generated between the active material particles, which facilitates the diffusion of the electrolytic solution.

第１図は陰極用未化板の５０ｃｒｎ上方よりの落下試験
結果を示す、ものであり、Ａは本発明４こより得らｎた
陰極板、Ｂはセルロース微粉末を添加しない陰極板であ
る。また第２図は一１５℃高率放電時における陰極活物
質利用率を示し。FIG. 1 shows the results of a drop test from above 50 crn of an uncured cathode plate, where A is the cathode plate obtained from the fourth invention, and B is a cathode plate to which no fine cellulose powder is added. Furthermore, Figure 2 shows the utilization rate of the cathode active material during high rate discharge at -15°C.

Ａは本発明薯こより得られた陰極板、Ｂはセルロース微
粉末を添加しない陰極板である。A is a cathode plate obtained from the present invention, and B is a cathode plate to which no fine cellulose powder is added.

上述せる如（１本発明化より得られた陰極板は、活物質
強度か大きく、利用率も著しく向上する等工業的価値共
だ大なるものである。As mentioned above, the cathode plate obtained from the present invention has great industrial value, such as high active material strength and a markedly improved utilization rate.

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

第１図は陰極用未化板の落下試験結果を示す比較図、第
２図は低温高率放電時における醜極活物質利用率を示す
比較図である。 特許出願人 新神戸電機株式会社　　　　　　−１、＼FIG. 1 is a comparative diagram showing the drop test results of uncured plates for cathodes, and FIG. 2 is a comparative diagram showing the utilization rate of the ugly electrode active material during low-temperature, high-rate discharge. Patent applicant Shin-Kobe Electric Co., Ltd. -1,\

Claims (1)

【特許請求の範囲】[Claims] 隘極ペーストＩこセルロースの微粉末を添加することを
特徴とする鉛１ｋＷ＆池用陰極板の製造法。A method for producing a cathode plate for 1 kW lead and a pond, characterized by adding fine powder of cellulose to the cathode paste I.
JP57088438A 1982-05-25 1982-05-25 Manufacture of negative plate for lead storage battery Pending JPS58206067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57088438A JPS58206067A (en) 1982-05-25 1982-05-25 Manufacture of negative plate for lead storage battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57088438A JPS58206067A (en) 1982-05-25 1982-05-25 Manufacture of negative plate for lead storage battery

Publications (1)

Publication Number Publication Date
JPS58206067A true JPS58206067A (en) 1983-12-01

Family

ID=13942798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57088438A Pending JPS58206067A (en) 1982-05-25 1982-05-25 Manufacture of negative plate for lead storage battery

Country Status (1)

Country Link
JP (1) JPS58206067A (en)

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