JPS62168347A - Positive active material for alkaline storage battery - Google Patents
Positive active material for alkaline storage batteryInfo
- Publication number
- JPS62168347A JPS62168347A JP61008609A JP860986A JPS62168347A JP S62168347 A JPS62168347 A JP S62168347A JP 61008609 A JP61008609 A JP 61008609A JP 860986 A JP860986 A JP 860986A JP S62168347 A JPS62168347 A JP S62168347A
- Authority
- JP
- Japan
- Prior art keywords
- active material
- mixture
- alkaline storage
- storage battery
- particle size
- 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
- 239000007774 positive electrode material Substances 0.000 title claims abstract description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims abstract description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 238000007127 saponification reaction Methods 0.000 claims description 5
- 239000006183 anode active material Substances 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000011812 mixed powder Substances 0.000 claims description 4
- 239000011149 active material Substances 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000004898 kneading Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000006258 conductive agent Substances 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 239000010439 graphite Substances 0.000 abstract 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 abstract 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel 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
- H01M4/32—Nickel oxide or hydroxide electrodes
-
- 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
Description
【発明の詳細な説明】
産業上の利用分野
本発明はポケット式あるいはボタン式等に用いられるア
ルカリ蓄電池用陽極活物質に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a positive electrode active material for alkaline storage batteries used in pocket type or button type batteries.
従来技術とその問題点
従来のアルカリ蓄電池の陽極活物質として、水酸化ニッ
ケルと導電材を単に混合しただけの混合粉体を用いてい
た。このものは、活物質の利用率が低く、５０〜５５％
であり多くの活物質を必要とする欠点があった。Prior art and its problems As the anode active material of conventional alkaline storage batteries, a mixed powder that is simply a mixture of nickel hydroxide and a conductive material has been used. This material has a low active material utilization rate of 50-55%.
However, it has the disadvantage of requiring a large amount of active material.
発明の目的
本発明は上記の欠点を改良し、ｇＩ極活物質の利用率を
向上させ、活物質使用蓋の削減を目的とする。OBJECTS OF THE INVENTION The present invention aims to improve the above-mentioned drawbacks, improve the utilization rate of the gI electrode active material, and reduce the amount of active material used.
発明の構成
本発明は水酸化ニッケルと導電材を混合した混合粉体を
バインダーを用いて混練した後粉砕して粒径を調製し、
乾燥することを特徴とするアルカリ蓄電池用陽極活物質
である。バインダーとしてポリビニルアルコールを用い
て、ポリビニルアルコールの平均重合度を１５００〜２
５００、ケン化度９７モル％以上とし、ポリビニルアル
コール濃度を０．３〜３％としたものである。Structure of the Invention The present invention involves kneading a mixed powder of nickel hydroxide and a conductive material using a binder and then pulverizing it to adjust the particle size.
This is an anode active material for alkaline storage batteries that is characterized by drying. Using polyvinyl alcohol as a binder, the average degree of polymerization of polyvinyl alcohol is 1500 to 2.
500, a saponification degree of 97 mol% or more, and a polyvinyl alcohol concentration of 0.3 to 3%.
実施例
２５０メツシユの水酸化ニッケル約８０ｗｔ％、導電材
の黒船１５０メツシユを約２０ｗｔ％の割合としＶ型混
合攪拌機で数時間混合する。この混合粉体に平均重合度
１５００〜２５００ 、ケン化度９７モル％のぎりビニ
ルアルコールを０．３〜３倦水溶液として加えて２〜３
時間混練する。混線物を目開き１簡の金属スクリーンに
より粉砕して粒径を調製する。この粒径の調製された活
物質を８０℃にて２４時間乾燥して、本発明の＠極活物
質を得る。Example 2 Approximately 80 wt% of 50 mesh nickel hydroxide and approximately 20 wt% of Kurofune 150 mesh of conductive material were mixed in a V-type mixer for several hours. To this mixed powder, add vinyl alcohol with an average degree of polymerization of 1500 to 2500 and a degree of saponification of 97 mol% as an aqueous solution of 0.3 to 3 mol%.
Knead for an hour. The particle size is adjusted by pulverizing the mixed material using a metal screen with a single opening. The active material prepared to have this particle size is dried at 80° C. for 24 hours to obtain the @polar active material of the present invention.
次に厚さ約肌１鱈の帯鋼に特殊ｐ−ル又は往復運動する
針で孔をあけた後、ニッケルメッキを施こし、マール等
で長尺のポケット状容器に成型し、その中に本発明の活
物質を充填し極板とし、て、陰極板と組立て■１枚ｅ２
枚涙の極群を構成して以下の試験を行った。Next, a hole is made in a strip of steel about one skin thick with a special pul or a reciprocating needle, then nickel plated, formed into a long pocket-shaped container with a marl, etc. Fill the active material of the present invention to make an electrode plate, and assemble it with a cathode plate ■ 1 piece e2
The following tests were conducted by forming a polar group of single tears.
ホ゛リビニルアルコールの平均重合度と活物質利用率の
関係を調べたところを第１表に示した。Table 1 shows the relationship between the average degree of polymerization of polyvinyl alcohol and the active material utilization rate.
（ケン化度９７モル％）
第 １ 表
平均重合度が１５００〜２５００において優れた活物質
利用率である。テン化度９７モル％より低いぎりビニル
アルコールでは同じ平均重合度でも活物質利用率が悪く
、粒径を調製した活物質がこわれやすい。(Saponification degree: 97 mol%) Table 1 When the average degree of polymerization is 1500 to 2500, the active material utilization rate is excellent. Vinyl alcohol with a degree of tenization lower than 97 mol % has a poor active material utilization rate even at the same average degree of polymerization, and the active material whose particle size has been adjusted is likely to break.
次にポリビニルアルコール水溶液の濃度と活物質利用率
との関係を調べた結果を第２表に示した。Next, Table 2 shows the results of investigating the relationship between the concentration of the polyvinyl alcohol aqueous solution and the active material utilization rate.
（ぎリビニルアル；−ルの平均重合度１５００、ケン化
度９７モル％）
第 ２ 表
上記よりＰＶＡの水溶液濃度が０．３〜５％の範囲が適
当である。(Average degree of polymerization of vinyl alcohol: 1500, degree of saponification: 97 mol%) From the above table 2, it is appropriate that the concentration of the aqueous solution of PVA is in the range of 0.3 to 5%.
発明の効果
以上の結果より明らかのように本発明によれば陽極活物
質の利用率が高くなり、活物質使用量を約２０％削減す
ることができ、原材料の合理化が図れる。Effects of the Invention As is clear from the above results, according to the present invention, the utilization rate of the anode active material is increased, the amount of active material used can be reduced by about 20%, and raw materials can be rationalized.
尚、上記の実施例ではポケット式極板に用いた場合につ
いて述べたが、ボタン式極板でも同様の効果がある。Incidentally, in the above embodiment, the case where the present invention is used in a pocket-type electrode plate has been described, but the same effect can be obtained in a button-type electrode plate.
Claims (4)
インダーを用いて混練した後粉砕して粒径を調製し乾燥
することを特徴とするアルカリ蓄電池用陽極活物質。(1) An anode active material for an alkaline storage battery, which is characterized in that a mixed powder of nickel hydroxide and a conductive material is kneaded using a binder, then pulverized to adjust the particle size, and dried.
請求の範囲第１項記載のアルカリ蓄電池用陽極活物質。(2) The positive electrode active material for an alkaline storage battery according to claim 1, wherein polyvinyl alcohol is used as a binder.
２５００、ケン化度９７モル％以上である特許請求の範
囲第２項記載のアルカリ蓄電池用陽極活物質。(3) Average degree of polymerization of polyvinyl alcohol is 1500~
2500 and a saponification degree of 97 mol% or more, the positive electrode active material for an alkaline storage battery according to claim 2.
特許請求の範囲第２項記載のアルカリ蓄電池用陽極活物
質。(4) The positive electrode active material for an alkaline storage battery according to claim 2, wherein the polyvinyl alcohol concentration is 0.3 to 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61008609A JPS62168347A (en) | 1986-01-18 | 1986-01-18 | Positive active material for alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61008609A JPS62168347A (en) | 1986-01-18 | 1986-01-18 | Positive active material for alkaline storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62168347A true JPS62168347A (en) | 1987-07-24 |
Family
ID=11697700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61008609A Pending JPS62168347A (en) | 1986-01-18 | 1986-01-18 | Positive active material for alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62168347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008162632A (en) * | 2006-12-27 | 2008-07-17 | Yoshino Kogyosho Co Ltd | Container having dispenser |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59189559A (en) * | 1983-04-12 | 1984-10-27 | Sanyo Electric Co Ltd | Manufacture of electrode plate for battery |
-
1986
- 1986-01-18 JP JP61008609A patent/JPS62168347A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59189559A (en) * | 1983-04-12 | 1984-10-27 | Sanyo Electric Co Ltd | Manufacture of electrode plate for battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008162632A (en) * | 2006-12-27 | 2008-07-17 | Yoshino Kogyosho Co Ltd | Container having dispenser |
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