JPH02201872A - Plate for lead-acid battery - Google Patents
Plate for lead-acid batteryInfo
- Publication number
- JPH02201872A JPH02201872A JP1021399A JP2139989A JPH02201872A JP H02201872 A JPH02201872 A JP H02201872A JP 1021399 A JP1021399 A JP 1021399A JP 2139989 A JP2139989 A JP 2139989A JP H02201872 A JPH02201872 A JP H02201872A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- active material
- water
- absorbing polymer
- paste
- 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
Links
- 239000002253 acid Substances 0.000 title claims abstract description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 12
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000004898 kneading Methods 0.000 claims abstract description 8
- 230000003139 buffering effect Effects 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 150000003839 salts Chemical class 0.000 claims 2
- 229920002125 Sokalan® Polymers 0.000 claims 1
- 229910003002 lithium salt Inorganic materials 0.000 claims 1
- 159000000002 lithium salts Chemical class 0.000 claims 1
- 239000004584 polyacrylic acid Substances 0.000 claims 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims 1
- 159000000000 sodium salts Chemical group 0.000 claims 1
- 239000011149 active material Substances 0.000 abstract description 20
- 239000002245 particle Substances 0.000 abstract description 6
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 abstract description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000006174 pH buffer Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/56—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead
- H01M4/57—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of lead of "grey lead", i.e. powders containing lead and lead oxide
-
- 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
Description
【発明の詳細な説明】 産業上の利用分野 本発明は鉛蓄電池の極板に関するものである。[Detailed description of the invention] Industrial applications The present invention relates to an electrode plate for a lead-acid battery.
従来の技術
鉛蓄電池は、一般に鉛粉と水と希硫酸を主成分とし、こ
れに短繊維、炭素粉末、有機添加剤などが必要に応じて
加えられ、練合することによって得られたペーストを鋳
造格子や連続多孔体に塗着し、成形、乾燥するペースト
式極板が広く用いられている。Conventional technology Lead-acid batteries generally have lead powder, water, and dilute sulfuric acid as their main ingredients, to which short fibers, carbon powder, organic additives, etc. are added as necessary, and a paste obtained by kneading is made. Paste-type electrode plates, which are applied to a cast grid or continuous porous body, molded, and dried, are widely used.
一方、鉛蓄電池の軽量化の観点から、活物質の密度を小
さくし、活物質の比表面積を高めることが知られている
。即′ち、ペーストの密度を小さくすることにより、反
応表面精の増大を図り、活物質の利用率を高める方法で
ある。その結果、活物質の絶対量を減少させることが可
能となり、電池の軽量化を図ることができ乙。On the other hand, from the viewpoint of reducing the weight of lead-acid batteries, it is known to reduce the density of the active material and increase the specific surface area of the active material. That is, this is a method of increasing the reaction surface precision and increasing the utilization rate of the active material by reducing the density of the paste. As a result, it is possible to reduce the absolute amount of active material, making it possible to reduce the weight of the battery.
発明が解決しようとする課題
密度の低いペーストを上記の格子等に塗着しようとした
場合、塗着前のペーストが時間の推移と共に変化し、水
分が蒸発し、ペーストの密度が段々高くなり、活物質と
した場合の利用率が下がるという問題点を有していた。Problem to be Solved by the Invention When attempting to apply a paste with a low density to the above-mentioned grid, etc., the paste before application changes with the passage of time, water evaporates, and the density of the paste gradually increases. The problem was that the utilization rate when used as an active material decreased.
また、単純にペーストの密度を小さくした場合、乾燥後
の活物質からはｔｅｔ−ＰｂＯが生じ、Ｆｒｅｅ−Ｐｂ
が少なく、粒子間の結合力が低い活物質となυ、その結
果として充放電のサイケ）Ｖ寿命特性が低下するという
問題点を有していた。Furthermore, if the density of the paste is simply reduced, tet-PbO is generated from the active material after drying, and Free-Pb
The problem is that the active material has a low bonding force between particles, and as a result, the life characteristics of charging and discharging (psyche)V deteriorate.
本発明は、上記の低密度ペーストを用いた場合の活物質
の利用率の向上という利点の反面で生じルペーストの経
時変化による密度のバラツキ、および寿命劣化の問題を
解決することを目的としている。The present invention aims to solve the problems of density variation and life deterioration due to aging of the paste, which occur when using the above-mentioned low-density paste, which has the advantage of improving the utilization rate of the active material.
課題を解決するだめの手段
この問題点を解決するために、本発明は吸水性高分子を
含む鉛粉と水、希硫酸を主成分として練合したペースト
を用いることを特徴とする。Alternative Means to Solve the Problem In order to solve this problem, the present invention is characterized by using a paste made by kneading lead powder containing a water-absorbing polymer, water, and dilute sulfuric acid as main components.
加えて、吸水性高分子は、従来考えられていた吸水能力
が高い、吸液性物質の他にｐＨの緩衝作用を有した、架
橋ポリアクリル酸塩を加えることを特徴としている。In addition, the water-absorbing polymer is characterized by the addition of cross-linked polyacrylate, which has a pH buffering effect, in addition to the previously thought liquid-absorbing substance that has a high water-absorbing ability.
作 用
この溝成によって、鉛蓄電池の活物質粒子間の結合力に
優れ、かつ活物質中での電解液の保持能力の優れた電池
の提供が可能になる。Function: This groove formation makes it possible to provide a lead-acid battery with excellent bonding strength between active material particles and excellent ability to retain electrolyte in the active material.
このため、活物質の利用率が向上することによって容量
の増加が可能となシ、また、活物質粒子間の結合力が強
固であるため、充放電を繰シ返しても容量低下や、活物
質の微粒子化の少ない優れた鉛蓄電池となる。Therefore, the capacity can be increased by improving the utilization rate of the active material, and since the bonding force between the active material particles is strong, the capacity does not decrease even after repeated charging and discharging. This results in an excellent lead-acid battery with less material atomization.
実施例 以下、本発明の詳細な説明する。Example The present invention will be explained in detail below.
鉛粉、水および希硫酸を練り合せたペーストを作成し、
鉛合金よりなる格子体に充填し、正極板を作成した。負
極板は従来処方とし、正極板、負極板、ガラスマット状
セパレータとを組み合せ、電圧１２Ｖ、２Ａｈ（１０時
間率）の小形シール鉛蓄電池を製作した。Create a paste by kneading lead powder, water and dilute sulfuric acid,
A lattice made of lead alloy was filled with the material to create a positive electrode plate. The negative electrode plate had a conventional formulation, and a positive electrode plate, a negative electrode plate, and a glass mat-like separator were combined to produce a small sealed lead-acid battery with a voltage of 12 V and 2 Ah (10 hour rate).
ζ仄″Ｆ−粂〔ヨ２
注１）鉛粉１ｋｇに対しての水、希硫酸の量を六九注２
）Ｆｒｅｅ−Ｐｂ量は熟成乾燥後の数値である。ζ仄″F-粂〔YO2 Note 1) The amount of water and dilute sulfuric acid per 1 kg of lead powder is 69 Note 2
) The amount of Free-Pb is the value after aging and drying.
これらの正極板によって試作した電池を、０．７６人定
電流にて容量試験した後、１６Ω定抵抗放電（放電終止
電圧１ｏ 、 ｓＶ ）、定電圧充電（１４，７Ｖ／１
．６Ａ、３時間）の充放電サイケ）Ｖ寿命を行なった。After carrying out a capacity test on a prototype battery using these positive electrode plates at a constant current of 0.76 ohms, it was subjected to 16Ω constant resistance discharge (discharge end voltage 1o, sV) and constant voltage charge (14.7V/1
．． 6 A, 3 hours) charge/discharge cycle) V life was performed.
第１図は充放電サイケ／ｌ／寿命の特性で、吸液性高分
子添加によシ、サイケ／ｌ／寿命の向上が明らかである
。また、第２図にはサイクル寿命における正極活物質の
粒子の結合度合を示す例として、活物質の比抵抗を示し
たが、本発明品は従来例と比較して電子伝導性に優れ、
結合力の強い活物質となることは明らかである。FIG. 1 shows the characteristics of charge/discharge cycle/l/life, and it is clear that the cycle/l/life is improved by adding a liquid-absorbing polymer. In addition, although Figure 2 shows the specific resistance of the active material as an example of the degree of bonding of the particles of the positive electrode active material during the cycle life, the product of the present invention has excellent electronic conductivity compared to the conventional example,
It is clear that this is an active material with strong binding strength.
発明の効果
本発明は、鉛粉を水、希硫酸等と練シ合せてペーストを
製造する過程において、ｐＨの緩衝作用を有する吸水性
高分子を添加してペースト練金時のｐＨをコントロー〜
し、中性領域で練合する結果、粒子間の結合力に優れ、
充放電サイクル寿命が伸び、かつ活物質の利用率に優れ
た鉛蓄電池を提供するという効果が得られる。Effects of the Invention The present invention controls the pH during paste kneading by adding a water-absorbing polymer having a pH buffering effect during the process of kneading lead powder with water, dilute sulfuric acid, etc. to produce a paste.
As a result of kneading in a neutral region, the bonding force between particles is excellent,
The effect of providing a lead-acid battery with an extended charge/discharge cycle life and an excellent utilization rate of active material can be obtained.
第１図は充放電サイケ／ｌ／寿命を示す図、第２図は充
放電サイクル寿命途中において正極活物質の比抵抗を示
した図、第３図はベーヌト練合中のｐＨ変化を示す図で
ある。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名区
）−１律択酵買Ｂ≦憚Figure 1 is a diagram showing the charge/discharge cycle/l/life, Figure 2 is a diagram showing the specific resistance of the positive electrode active material in the middle of the charge/discharge cycle life, and Figure 3 is a diagram showing the pH change during beinet mixing. It is. Agent's name: Patent attorney Shigetaka Awano and 1 other person)
Claims (2)
トを用いる鉛蓄電池において、前記ペーストは、吸水性
高分子を加えて練合し、吸水性高分子の添加量が鉛粉に
対し、０．０５〜１．０ｗ％であることを特徴とする鉛
蓄電池用極板。(1) In a lead-acid battery that uses a paste made by kneading lead powder, water, and dilute sulfuric acid as main components, the paste is mixed with a water-absorbing polymer, and the amount of water-absorbing polymer added is equal to the lead powder. On the other hand, an electrode plate for a lead-acid battery characterized in that the content is 0.05 to 1.0 w%.
その金属塩は、ナトリウム塩、カリウム塩、リチウム塩
のいずれかであり、同時にポリアクリル酸塩が架橋構造
を有していると同時にｐＨの緩衝作用をも有しているこ
とを特徴とする特許請求の範囲第１項記載の鉛蓄電池用
極板。(2) the water-absorbing polymer is a metal salt of polyacrylic acid,
The metal salt is a sodium salt, a potassium salt, or a lithium salt, and the patent is characterized in that the polyacrylate has a crosslinked structure and also has a pH buffering effect. An electrode plate for a lead-acid battery according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021399A JPH02201872A (en) | 1989-01-31 | 1989-01-31 | Plate for lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1021399A JPH02201872A (en) | 1989-01-31 | 1989-01-31 | Plate for lead-acid battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02201872A true JPH02201872A (en) | 1990-08-10 |
Family
ID=12053975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1021399A Pending JPH02201872A (en) | 1989-01-31 | 1989-01-31 | Plate for lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02201872A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013150754A1 (en) * | 2012-04-06 | 2013-10-10 | 株式会社Ｇｓユアサ | Flooded lead-acid battery |
| JP2015032482A (en) * | 2013-08-02 | 2015-02-16 | 株式会社Ｇｓユアサ | Liquid-type lead storage battery |
| JP2015032480A (en) * | 2013-08-02 | 2015-02-16 | 株式会社Ｇｓユアサ | Liquid-type lead storage battery |
| JP2015032479A (en) * | 2013-08-02 | 2015-02-16 | 株式会社Ｇｓユアサ | Control-valve-type lead storage battery |
-
1989
- 1989-01-31 JP JP1021399A patent/JPH02201872A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013150754A1 (en) * | 2012-04-06 | 2013-10-10 | 株式会社Ｇｓユアサ | Flooded lead-acid battery |
| JPWO2013150754A1 (en) * | 2012-04-06 | 2015-12-17 | 株式会社Ｇｓユアサ | Liquid lead-acid battery |
| JP2015032482A (en) * | 2013-08-02 | 2015-02-16 | 株式会社Ｇｓユアサ | Liquid-type lead storage battery |
| JP2015032480A (en) * | 2013-08-02 | 2015-02-16 | 株式会社Ｇｓユアサ | Liquid-type lead storage battery |
| JP2015032479A (en) * | 2013-08-02 | 2015-02-16 | 株式会社Ｇｓユアサ | Control-valve-type lead storage battery |
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