JPH0458460A - Manufacture of sintered substrate for alkaline storage battery - Google Patents
Manufacture of sintered substrate for alkaline storage batteryInfo
- Publication number
- JPH0458460A JPH0458460A JP2167626A JP16762690A JPH0458460A JP H0458460 A JPH0458460 A JP H0458460A JP 2167626 A JP2167626 A JP 2167626A JP 16762690 A JP16762690 A JP 16762690A JP H0458460 A JPH0458460 A JP H0458460A
- Authority
- JP
- Japan
- Prior art keywords
- bead
- organic resin
- resin powder
- shaped organic
- sintered substrate
- 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
- 239000000758 substrate Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000003860 storage Methods 0.000 title description 4
- 239000011347 resin Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 239000002562 thickening agent Substances 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 239000002612 dispersion medium Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 239000011149 active material Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 11
- 239000011148 porous material Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract 3
- 239000002270 dispersing agent Substances 0.000 abstract 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、アルカリ蓄電池に用られる焼結基板の製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method of manufacturing a sintered substrate used in an alkaline storage battery.
（ロ）従来の技術
従来、アルカリ蓄電池の焼結基板としては、多孔度の向
上を計るべく、焼結用のニッケル粉末からなるスラリー
中に、造孔剤とじて有機中空球体や、ビーズ状有機樹脂
粉末を添加している。(b) Conventional technology Conventionally, in order to improve the porosity of sintered substrates for alkaline storage batteries, organic hollow spheres or bead-shaped organic Added resin powder.
例えば、特開昭５８−６６２６７号公報には、粒径１ｏ
〜２００μｍの有機中空球体を添加して多孔度の向上が
行われている。For example, in Japanese Patent Application Laid-open No. 58-66267, a particle size of 10
Increased porosity has been achieved by adding ~200 μm organic hollow spheres.
しかしながら、このような有機中空球体は、その内部が
中空であるが故、スラリーを混合する時や、スラリーを
導電芯体に塗着する時に、前記有機中空球体に応力が付
与されるので、つぶれてしまう。この結果、十分な造化
効果を発揮しえないという間趙が生じる。However, since such organic hollow spheres are hollow inside, stress is applied to the organic hollow spheres when mixing the slurry or applying the slurry to the conductive core, resulting in collapse. It ends up. As a result, a problem arises in that it is unable to exert sufficient sculpting effects.
そこで、例えば特開昭５９ １７５５６５号公報に開示
される如く、ビーズ状有機樹脂粉末を造孔剤として使用
することにより、前記問題を解決することかで゛きる。Therefore, the above problem can be solved by using bead-shaped organic resin powder as a pore-forming agent, as disclosed in, for example, Japanese Patent Application Laid-Open No. 59-175565.
ところが、このようなビーズ成育４ｔ！樹脂粉末を造孔
剤として用いた場合、ビーズ状樹脂粉末の粒径が小さ過
ぎると、十分な多孔度が得られず、造孔剤とＬでの効果
を十分に発揮しえない。一方、粒径が大き過ぎると、今
度は多孔度が高くなり、焼結基板の孔径が大きくなり過
ぎる。その結果、活物質充填後の電極において、活物質
と集電用の焼結により得られた基管との距離が大きくな
るので、集電機能が十分に発揮できず、活物質利用率が
低下するという問題が生じる。However, this kind of bead growth 4t! When resin powder is used as a pore-forming agent, if the particle size of the bead-shaped resin powder is too small, sufficient porosity cannot be obtained, and the effects of the pore-forming agent and L cannot be fully exhibited. On the other hand, if the particle size is too large, the porosity will increase and the pore size of the sintered substrate will become too large. As a result, in the electrode filled with active material, the distance between the active material and the base tube obtained by sintering for current collection becomes large, so the current collection function cannot be fully demonstrated, and the active material utilization rate decreases. The problem arises.
（ハ）発明が解決しようとする課題
本発明は前記問題点に鑑みてなされたものであって、ビ
ーズ状有機樹脂粉末を造孔剤として添加、使用した時に
、十分な造孔効果が得られ、かかる焼結基板を用いて活
物質を充填して電極とした際に、集電機能が発揮され、
活物質の高い利用率が得られる焼結基板の製造方法を提
案するものである。(c) Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned problems, and when bead-shaped organic resin powder is added and used as a pore-forming agent, a sufficient pore-forming effect can be obtained. When such a sintered substrate is filled with an active material and used as an electrode, a current collecting function is exhibited,
This paper proposes a method for manufacturing a sintered substrate that can obtain a high utilization rate of active materials.
（ニ）課題を解決するための手段
本発明は、分散媒と、増粘剤と、金属粉末と、造孔剤と
してのビーズ状有機樹脂粉末とを混合してスラリーを得
、該スラリーを導電性芯体に塗着、乾燥後、前記増粘剤
と前記造孔剤を分解除去して前記−／に＠粉末を焼結す
るアルカリ蓄電池用焼結基板の製造方法であって、前記
ビーズ扶育りｎ！樹脂粉末の粒径を、２５〜５０１Ｉｍ
とすることを特徴とするものである。(d) Means for Solving the Problems The present invention provides a slurry obtained by mixing a dispersion medium, a thickener, a metal powder, and a bead-shaped organic resin powder as a pore-forming agent, and then converting the slurry into a conductive material. 1. A method for producing a sintered substrate for an alkaline storage battery, which comprises applying the powder to a core body, drying it, decomposing and removing the thickener and the pore-forming agent, and sintering the powder on the -/. Rin! The particle size of the resin powder is 25 to 501 Im.
It is characterized by the following.
（ホ）作 用
本発明者は、ビーズ状有機樹脂粉末の粒径を変化させ、
２５〜５０１Ｉｍとした場合に、造花効果が十分に得ら
れ、活物質を充填し電極とした時、その利用率が高く維
持されることを見い出し、本発明を完成するに至った。(E) Effect The present inventor changed the particle size of the bead-shaped organic resin powder,
The inventors have found that when the electrode is set at 25 to 501 Im, a sufficient artificial flower effect can be obtained, and that when the active material is filled and used as an electrode, the utilization rate is maintained at a high level, and the present invention has been completed.
ビーズ状有機樹脂粉末の粒径が２５μｍよりも少さいと
、焼結しようとする金属粉末の粒子の間に入り込んでし
まうため、造孔効果が十分に得られない。If the particle size of the bead-shaped organic resin powder is smaller than 25 μm, the particle size of the bead-shaped organic resin powder will get stuck between the particles of the metal powder to be sintered, so that a sufficient pore-forming effect cannot be obtained.
また、ビーズ状有機樹脂粉末の粒径が５０μｍよりも大
きいと、焼結基板の基管の孔径が大きくなン、この集電
機能を有する基管と活物質問の距離が大きくなるので、
活物質利用率が低下してしまつ。In addition, if the particle size of the bead-shaped organic resin powder is larger than 50 μm, the pore diameter of the base tube of the sintered substrate will be large, and the distance between the base tube having a current collecting function and the living matter will become large.
The active material utilization rate will decrease.
（へ） 実 施 例
分散媒とＬでの純水と、増粘剤とＬでのカルボ番ンメ壬
ルセルローズと、焼結して基管を構成するための金属粉
末であるニッケル粉末（平均粒径：２．５μｍ） と、
造孔剤としいのスチレン樹脂（ビーズ状有機樹脂粉末）
をニッケル粉末に対し４重量％添加、混練し、スラリー
を得た。このスラリーをパンチングメタルよりなる導電
性芯体に１ｍｍの厚みでコーティングし、乾燥を行い、
コーティングシートを作製した。このシートを８５０℃
の還元雰囲気中で、焼結を行い、焼結基板を得た。(F) Example Dispersion medium and pure water in L, thickener and carboxyl cellulose in L, and nickel powder (average particle Diameter: 2.5μm) and
Styrene resin as a pore-forming agent (bead-shaped organic resin powder)
was added in an amount of 4% by weight to the nickel powder and kneaded to obtain a slurry. This slurry was coated on a conductive core made of punched metal to a thickness of 1 mm, dried,
A coated sheet was produced. This sheet was heated to 850℃
Sintering was performed in a reducing atmosphere to obtain a sintered substrate.
ここで、前記スチレン樹脂の添加量は一定としておＩ）
、その平均粒径は、２ 、５ ｐｍ、５ｕｍ、１０μｍ
、２５μｍ、５０ＩＩｍ、７５ＩＩｍのものを用い、そ
１１ぞれ異なる多孔度の焼結基板を作製した。Here, assuming that the amount of the styrene resin added is constant, I)
, its average particle size is 2, 5 pm, 5 um, 10 μm
, 25 μm, 50 IIm, and 75 IIm were used to prepare sintered substrates with 11 different porosities.
そして、各焼結基板を用い、硝酸ニッケル溶液に浸漬後
、アルカリ処理するという化学含浸法により、水酸化ニ
ッケルを活物質として充填を行なった。このようにして
ニッケル電極を作製した。Then, each sintered substrate was filled with nickel hydroxide as an active material by a chemical impregnation method in which it was immersed in a nickel nitrate solution and then treated with an alkali. A nickel electrode was produced in this way.
（テスト１） 各焼結基板を用い、その多孔度を比較した。(Test 1) Each sintered substrate was used and its porosity was compared.
この結果を、第１図に示す。第１図は、スチレン樹脂即
ちビーズ状有機樹脂の平均粒径と、焼結基板の多孔度と
の関係を示す図である。これより、平均粒径２５μｍ以
上のビーズ状有機樹脂を添加使用することにより、高多
孔度の焼結基板が得られることが理解される。The results are shown in FIG. FIG. 1 is a diagram showing the relationship between the average particle size of a styrene resin, that is, a bead-shaped organic resin, and the porosity of a sintered substrate. From this, it is understood that a highly porous sintered substrate can be obtained by adding and using a bead-shaped organic resin having an average particle size of 25 μm or more.
（テスト２）
前記各焼結基板に、活物質を充填した二・ノヶルを極の
活物質利用率を比較した。この結果を、第２図に示す。(Test 2) The active material utilization rates of the electrodes of Ni-Nogal filled with the active material in each of the sintered substrates were compared. The results are shown in FIG.
第２図は、ビーズ状有機樹脂の平均粒径と、活物質利用
率との関係を示す図で−ある。FIG. 2 is a diagram showing the relationship between the average particle diameter of bead-shaped organic resin and the active material utilization rate.
これより、平均粒径５０Ｂ＋ｍ以下のビーズ状有機樹脂
を添加、使用することにより、活物質の利用率を高いま
まに維持することが可能となる。From this, by adding and using a bead-shaped organic resin having an average particle size of 50 B+m or less, it becomes possible to maintain the utilization rate of the active material at a high level.
テスト１、テスト２の結果より、二の種焼結基板に添加
、使用するビーズ状有機樹脂の平均粒径ｌｊ、２５〜５
０μｍとするのが望ましいことが理解される。From the results of Test 1 and Test 2, the average particle size lj of the bead-shaped organic resin added to and used in the second seed sintered substrate is 25 to 5.
It is understood that it is desirable to set it to 0 μm.
（ト）発明の効果
以上詳述した如く、本発明の焼結基板の製造方法によれ
ば、造孔剤としてのビーズ状有機樹脂粉末の粒径を２５
〜５０ｐｍと−でいるので、焼結基板製造時において十
分な造孔効果が発揮でき、ここに活物質を充填して電極
とした際には高い利用率が得られるものであり、その工
業的価値は極めて大きい。(G) Effects of the Invention As detailed above, according to the method for manufacturing a sintered substrate of the present invention, the particle size of the bead-shaped organic resin powder as a pore-forming agent is reduced to 25%.
Since the pore-forming effect is negative at ~50 pm, sufficient pore-forming effect can be achieved during the production of sintered substrates, and a high utilization rate can be obtained when the active material is filled into the pores and used as an electrode. The value is extremely large.
第１図はビーズ状有機樹脂粉末の粒径と焼結基板の多孔
度との関係を示す図、第２図はビーズ状有機樹脂粉末の
粒径と活物質の利用率との関係を示す図である。Figure 1 is a diagram showing the relationship between the particle size of the bead-shaped organic resin powder and the porosity of the sintered substrate, and Figure 2 is a diagram showing the relationship between the particle size of the bead-shaped organic resin powder and the utilization rate of the active material. It is.
Claims (1)
のビーズ状有機樹脂粉末とを混合してスラリーを得、該
スラリーを導電性芯体に塗着、乾燥後、前記増粘剤と前
記造孔剤を分解、除去して前記金属粉末を焼結する製造
方法において、 前記ビーズ状有機樹脂粉末の粒径を、２５〜５０μｍと
することを特徴とするアルカリ蓄電池用焼結基板の製造
方法。(1) A slurry is obtained by mixing a dispersion medium, a thickener, a metal powder, and a bead-shaped organic resin powder as a pore-forming agent, and the slurry is applied to a conductive core, and after drying, the A manufacturing method for sintering the metal powder by decomposing and removing the thickener and the pore-forming agent, characterized in that the particle size of the bead-shaped organic resin powder is 25 to 50 μm. A method for manufacturing a bonded substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167626A JPH0458460A (en) | 1990-06-26 | 1990-06-26 | Manufacture of sintered substrate for alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167626A JPH0458460A (en) | 1990-06-26 | 1990-06-26 | Manufacture of sintered substrate for alkaline storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0458460A true JPH0458460A (en) | 1992-02-25 |
Family
ID=15853279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2167626A Pending JPH0458460A (en) | 1990-06-26 | 1990-06-26 | Manufacture of sintered substrate for alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0458460A (en) |
-
1990
- 1990-06-26 JP JP2167626A patent/JPH0458460A/en active Pending
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