JPS62256373A - Manufacture of anode plate for nickel-cadmium alkaline storage battery - Google Patents
Manufacture of anode plate for nickel-cadmium alkaline storage batteryInfo
- Publication number
- JPS62256373A JPS62256373A JP61099213A JP9921386A JPS62256373A JP S62256373 A JPS62256373 A JP S62256373A JP 61099213 A JP61099213 A JP 61099213A JP 9921386 A JP9921386 A JP 9921386A JP S62256373 A JPS62256373 A JP S62256373A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl alcohol
- powder
- solvent
- cadmium oxide
- storage battery
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000003860 storage Methods 0.000 title claims description 8
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 title claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 23
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 19
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 claims abstract description 13
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 238000007127 saponification reaction Methods 0.000 claims abstract description 8
- 239000011149 active material Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 9
- 229910001882 dioxygen Inorganic materials 0.000 abstract description 9
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 238000004898 kneading Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- PLLZRTNVEXYBNA-UHFFFAOYSA-L cadmium hydroxide Chemical compound [OH-].[OH-].[Cd+2] PLLZRTNVEXYBNA-UHFFFAOYSA-L 0.000 description 1
- 239000006182 cathode active material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007613 slurry method Methods 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
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/26—Processes of manufacture
-
- 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
- H01M4/621—Binders
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はニッケル・カドミウムアルカリ蓄電池用陰極板
の性能向上、特に陰極活物質のガス吸収性能の向上を図
る製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a manufacturing method for improving the performance of a cathode plate for a nickel-cadmium alkaline storage battery, particularly for improving the gas absorption performance of a cathode active material.
従来の技術
おいＣ１陰極板はニッケル焼結体の細孔中に活物質であ
るカドミウムを化学的あるいは電気化学的に保持させる
焼結式がほとんどであった。Conventional C1 cathode plates have mostly been of the sintered type in which cadmium, an active material, is chemically or electrochemically retained in the pores of a nickel sintered body.
最近になって、・製造価格、製造設備、製造方法の面か
ら、醇化カドミウム粉末あるいは水酸化カドミウム粉末
を有機バインダーを溶融させた溶媒で混練し、芯材とし
て用いるパンチングメタルに塗布する方法、いわゆるペ
ースト式あるいはスラリ一式と呼ばれる製造法が注目さ
れてきている。Recently, in view of manufacturing costs, manufacturing equipment, and manufacturing methods, a method of kneading cadmium chloride powder or cadmium hydroxide powder with a solvent in which an organic binder is melted and applying the mixture to punched metal used as a core material has been proposed. A manufacturing method called a paste method or a slurry method is attracting attention.
発明が解決しようとする問題点
ところで、陰極板の重要な特性として、過充電時にＰ、
極から発生する酸素ガスを吸収するという作用がある。Problems to be Solved by the Invention By the way, important characteristics of the cathode plate include P,
It has the effect of absorbing oxygen gas generated from the poles.
この性能はニッケル・カドミウムアルカリ蓄電池を密閉
化する上で重要な技術であり、特に最近のように充電電
流か大きくなると、この酸禦ガス吸収性能か特性面、安
全面からも最も重要な特性のひとつになっている。This performance is an important technology for sealing nickel-cadmium alkaline storage batteries, and especially as the charging current increases recently, this acid gas absorption performance is the most important characteristic from the characteristics and safety aspects. They are all one.
焼結式陰極板の場合には従来の電流であれば電ったが、
ペースト式陰極板の活物質は有機バインダーでおおわれ
ているため、酸素ガス吸収か悪く、最近の傾向である大
電流充電では電池缶内圧力か上昇するという問題点があ
った。In the case of a sintered cathode plate, it would work if it was a conventional current, but
Since the active material of the paste-type cathode plate is covered with an organic binder, it has poor oxygen gas absorption, and the recent trend of high-current charging increases the pressure inside the battery can.
問題点を解決するための手段
ケン化度７０幅以下のポリビニルアルコールを溶剤に溶
解させ、これを用い、酸化カドミウム粉末とポリビニル
アルコール粉末を共に混練してペースト状またはスラリ
ー状とすることを特徴とする。Means for solving the problem The method is characterized by dissolving polyvinyl alcohol with a saponification degree of 70 or less in a solvent, and using this, cadmium oxide powder and polyvinyl alcohol powder are kneaded together to form a paste or slurry. do.
作用
酸化カドミウム粉末とポリビニルアルコール粉末を溶剤
で混練すると、混線時間の経過と共に、溶剤中にポリビ
ニルアルコールが溶は出し、これか酸化カドミウム表面
上に単分子吸着する。When cadmium oxide powder and polyvinyl alcohol powder are kneaded in a solvent, polyvinyl alcohol dissolves into the solvent as time passes, and a single molecule of this dissolves onto the cadmium oxide surface.
この吸着は非常に緻密で、酸素ガスの透過度が小さく、
ガス吸収性能が悪い。これに対し、ケン化度７０４以下
のポリビニルアルコールを溶剤中に溶解させておくと、
ポリビニルアルコール粉末が溶剤中に溶解する前に、ケ
ン化度７０憾以下のポリビニルアルコールが酸化カドミ
ウム表面に吸着する。この吸着はセグメント吸着であり
、酸化カドミウム表面のポリビニルアルコール密度は粗
になり、このため、酸素ガス吸収性能が向上する。−ｈ
ｂ、未ケン化部のアセチル基は、乾燥、化成によって取
り除かれるため、笛部性能への悪影響はない。This adsorption is very dense and has low oxygen gas permeability.
Poor gas absorption performance. On the other hand, if polyvinyl alcohol with a saponification degree of 704 or less is dissolved in a solvent,
Before the polyvinyl alcohol powder is dissolved in the solvent, polyvinyl alcohol with a degree of saponification of 70 or less is adsorbed on the surface of cadmium oxide. This adsorption is segmental adsorption, and the polyvinyl alcohol density on the cadmium oxide surface becomes coarse, thereby improving the oxygen gas absorption performance. -h
b. Since the acetyl groups in the unsaponified part are removed by drying and chemical conversion, there is no adverse effect on the performance of the pipe part.
実施例
酸化カドミウム粉末７０部、ポリビニルアルコール粉末
５部、および、ケン化度５０ｃ６のポリビニルアルコー
ル１部をエチレングリコール２４部に溶解させた溶剤と
を２時間混練する。Example 70 parts of cadmium oxide powder, 5 parts of polyvinyl alcohol powder, and a solvent prepared by dissolving 1 part of polyvinyl alcohol with a degree of saponification of 50c6 in 24 parts of ethylene glycol are kneaded for 2 hours.
これによって、酸化カドミウム粉末の表面近傍には粗な
ポリビニルアルコールの被膜が形成される。このように
して得られたペーストを鉄パンチングメタルの芯材に塗
着し、Ｌ４０”Ｃで加熱、乾燥することにより、未溶解
のポリビニルアルコール粉末を溶融させるとともに、エ
チレングリコールを蒸発させることにより、酸化カドミ
ウム粉末間を結着させる。このようにして得た極板を２
０彊水酸化ナトリウム水溶液中で化成し、製造した陰極
板を用いて製作したアルカリ蓄電池Ｃ本発明品）と従来
の陰極板を用いテ製作シたアルカリ蓄電池（従来品）の
電池内圧を比較した結果を＠１図に示す。このときの充
電電流は０．５ ｃｍ Ａである。充電時間２時間後で
陽極板がほぼ完全に充電されるため、それ以後陽極板か
ら酸素ガスが発生する。従来品では陰極板での酸素ガス
吸収があまり進まないため、内部圧力が上昇するが本発
明品は、酸素ガス吸収反応か速やかに進行するため、内
部圧力が約２す／ｄでほぼ一定となる。As a result, a rough polyvinyl alcohol film is formed near the surface of the cadmium oxide powder. The paste obtained in this way is applied to the core material of iron punching metal, heated and dried at L40"C, thereby melting the undissolved polyvinyl alcohol powder and evaporating the ethylene glycol. The cadmium oxide powder is bound together.The electrode plate obtained in this way is
The internal pressures of an alkaline storage battery manufactured using a cathode plate chemically formed in an aqueous sodium hydroxide solution (present invention product) and an alkaline storage battery manufactured using a conventional cathode plate (conventional product) were compared. The results are shown in Figure @1. The charging current at this time was 0.5 cmA. Since the anode plate is almost completely charged after 2 hours of charging time, oxygen gas is generated from the anode plate thereafter. In the conventional product, the internal pressure rises because the absorption of oxygen gas at the cathode plate does not progress very much, but in the product of the present invention, the oxygen gas absorption reaction progresses rapidly, so the internal pressure remains almost constant at about 2 S/d. Become.
発明の効果
上述のように、本発明によれば陰極板の酸素ａ粍
ガス吸収晦自を向上させ、大電流充電時のアルカリ蓄電
池内の内部圧力を低く抑える陰極板を製造することがで
きる点工業的価値極め°Ｃ大なるものである。Effects of the Invention As described above, according to the present invention, it is possible to manufacture a cathode plate that improves the ability of the cathode plate to absorb oxygen and atom gas and suppresses the internal pressure inside the alkaline storage battery during high current charging. It has great industrial value.
池と本発明による陰極板を用いたアルカリ蓄電池との内
部圧力の経時変化を示す曲線図である。FIG. 2 is a curve diagram showing the change over time in the internal pressure of an alkaline storage battery using a cathode plate according to the present invention.
Claims (1)
化度７０％以下のポリビニルアルコールを溶解させた溶
剤によって混練してペースト状またはスラリー状の活物
質とし、これを集電体に塗布し、加熱・乾燥することを
特徴とするニッケル・カドミウムアルカリ蓄電池用陰極
板の製造法。Cadmium oxide powder and polyvinyl alcohol powder are kneaded with a solvent in which polyvinyl alcohol with a degree of saponification of 70% or less is dissolved to form a paste or slurry active material, which is applied to a current collector and heated and dried. A method for producing a cathode plate for a nickel-cadmium alkaline storage battery, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61099213A JPS62256373A (en) | 1986-04-28 | 1986-04-28 | Manufacture of anode plate for nickel-cadmium alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61099213A JPS62256373A (en) | 1986-04-28 | 1986-04-28 | Manufacture of anode plate for nickel-cadmium alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62256373A true JPS62256373A (en) | 1987-11-09 |
| JPH0519260B2 JPH0519260B2 (en) | 1993-03-16 |
Family
ID=14241374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61099213A Granted JPS62256373A (en) | 1986-04-28 | 1986-04-28 | Manufacture of anode plate for nickel-cadmium alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62256373A (en) |
-
1986
- 1986-04-28 JP JP61099213A patent/JPS62256373A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519260B2 (en) | 1993-03-16 |
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