JPH02276160A - Manufacture of sintered substrate for alkaline storage battery - Google Patents
Manufacture of sintered substrate for alkaline storage batteryInfo
- Publication number
- JPH02276160A JPH02276160A JP1096709A JP9670989A JPH02276160A JP H02276160 A JPH02276160 A JP H02276160A JP 1096709 A JP1096709 A JP 1096709A JP 9670989 A JP9670989 A JP 9670989A JP H02276160 A JPH02276160 A JP H02276160A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- organic hollow
- nickel
- conductive core
- alkaline storage
- 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
- 239000000758 substrate Substances 0.000 title claims abstract description 30
- 238000003860 storage Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 238000009835 boiling Methods 0.000 claims abstract description 8
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 8
- 239000002562 thickening agent Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 abstract description 20
- 238000001035 drying Methods 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000005245 sintering Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 3
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 2
- 239000011347 resin Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 15
- 239000003795 chemical substances by application Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 239000011149 active material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 241000207961 Sesamum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 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
- 229920001577 copolymer Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 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
- 238000009783 overcharge test Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 238000012360 testing method Methods 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- 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)
- Powder Metallurgy (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、アルカリ蓄電池用焼結基板の製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for manufacturing a sintered substrate for an alkaline storage battery.
（ロ）従来の技術
ニッケルーカドミウム電池等のアルカリ蓄電池の電極基
体として、従来から用いられている焼結基板は、機械的
強度や導電性の点で優れたものであり、活物質の保持体
として適している。しかし、近年の市場用途の拡大は、
電池の高容量化の発な技術開発が行なわれている。(b) Conventional technology Sintered substrates, which have traditionally been used as electrode substrates for alkaline storage batteries such as nickel-cadmium batteries, have excellent mechanical strength and conductivity, and are suitable for holding active materials. It is suitable as However, the expansion of market applications in recent years has led to
Technological developments are underway to increase the capacity of batteries.
さて、ニッケル粉末、増粘剤及び水を混合してスラリー
となし、これを導電性芯体に塗着し、乾燥、焼結を行な
って作製するいわゆるスラリー法ニッケル焼結基体は、
通常、その多孔度が８０％程度となっている。そして、
この焼結基板の多孔度を高くすれば活物質の充填量を多
くでき高容量化を計ることが可能となる。したがって、
多孔度を高めることは、これまでにも種々研究されてお
り、最も実際的な方法としては、スラリー中に造孔剤を
混合して、この造孔剤を加熱、除去するものがある。Now, the so-called slurry method nickel sintered substrate is produced by mixing nickel powder, a thickener, and water to form a slurry, applying this to a conductive core, drying, and sintering.
Usually, the porosity is about 80%. and,
By increasing the porosity of this sintered substrate, it is possible to increase the amount of active material filled and increase the capacity. therefore,
Various studies have been made to increase the porosity, and the most practical method is to mix a pore-forming agent into a slurry and heat and remove the pore-forming agent.
このように造孔剤を利用し、工業的に用いることができ
るようにするためには、
■均一な造孔作用を有すること
■焼結基板の機械的強度を維持できること■造孔剤の除
去が容易なこと
■良好な生産性を維持できること
という要件を満たす必要があり、最も有望なものとして
、造孔剤として球状の有機樹脂体を使用する発明が多く
なされている。In order to be able to use pore-forming agents industrially in this way, it is necessary to: ■ have a uniform pore-forming effect ■ be able to maintain the mechanical strength of the sintered substrate ■ remove the pore-forming agent It is necessary to satisfy the requirements of easy production and maintenance of good productivity, and many inventions have been made that use spherical organic resin bodies as the pore-forming agent as the most promising one.
しかしながら、造孔剤として通常の有機樹脂球体を用い
、焼結基板の高多孔度化をはかるためには、樹脂量が多
く必要となり、焼結の際に樹脂の分解生成物が、焼結炉
や焼結基板中に残留することになる。一方、特開昭５８
−１６９７７３号公報に開示されるように、造孔剤とし
て低沸点炭化水素を内包した有機中空球体を用い、これ
をスラリー中に混合し、加熱、乾燥時に前記有機中空球
体を膨張させ、高多孔度の焼結基板を作製する方法があ
る。この方法では、造孔剤として使用する樹脂量が少な
くて良く１分解生成物の影響を受は難いため有効である
。ところが、加熱乾燥時における温度のバラツキや、基
板内の温度分布、つまり、焼結基板を作製する際には通
常導電性芯体にスラリーを帯状に間隔をおいて複数列塗
着するため、スラリーを塗着していない導電性芯体の露
出部が存在し、この露出部近傍やスラリーの表面では温
度が上昇し易くなり、これらの影響によって、有機中空
球体が均一に膨張できなくなり、均一な空孔分布を得る
のは難しい。また、導電性芯体付近や導電性芯体に密着
した有機中空球体は、膨張する際に導電性芯体からニッ
ケル層を押し上げ引き離そうとする力が働き、導電性芯
体とニッケル層との間の密着性を著しく阻害する。この
ため、ニッケル層が導電性芯体からはがれたり、脱落し
たりする可能性があった。However, in order to use ordinary organic resin spheres as a pore-forming agent and to increase the porosity of the sintered substrate, a large amount of resin is required, and during sintering, the decomposition products of the resin are released into the sintering furnace. It will remain in the sintered substrate. On the other hand, JP-A-58
As disclosed in Japanese Patent No. 169773, organic hollow spheres containing low-boiling hydrocarbons are used as a pore-forming agent, mixed into a slurry, and expanded during heating and drying to achieve high porosity. There is a method for producing a sintered substrate of 100%. This method is effective because it requires a small amount of resin used as a pore-forming agent and is less susceptible to the effects of 1-decomposition products. However, there are variations in temperature during heating and drying, and temperature distribution within the substrate.In other words, when producing a sintered substrate, slurry is usually applied in multiple strips at intervals on a conductive core, so slurry There are exposed parts of the conductive core that are not coated, and the temperature tends to rise near these exposed parts and on the surface of the slurry. Due to these effects, the organic hollow spheres cannot expand uniformly, resulting in uniform expansion. Obtaining the vacancy distribution is difficult. In addition, when an organic hollow sphere near the conductive core or in close contact with the conductive core expands, a force acts to push up and pull the nickel layer away from the conductive core, causing a gap between the conductive core and the nickel layer. significantly impairs adhesion. Therefore, there was a possibility that the nickel layer would peel off or fall off from the conductive core.
（ハ）発明が解決しようとする課題
本発明は、導電性芯体からのニッケル層のはがれ及び脱
落がなく、均一な空孔を有する高多孔度菱のアルカリ蓄
電池用焼結基板を提供しようとするものである。(c) Problems to be Solved by the Invention The present invention seeks to provide a highly porous rhombic sintered substrate for alkaline storage batteries that does not peel or fall off the nickel layer from the conductive core and has uniform pores. It is something to do.
（ニ）課題を解決するための手段
本発明のアルカリ蓄電池用焼結基板は、低沸点炭化水素
を内包した有機中空球体を予め加熱し膨張させた後、前
記有機中空球体をニッケル粉末及び増粘剤とともに混合
してスラリーとなし、導電性芯体に塗着し乾燥した後、
焼結することを特徴とするものである。(d) Means for Solving the Problems The sintered substrate for an alkaline storage battery of the present invention is produced by preheating and expanding organic hollow spheres containing a low-boiling hydrocarbon, and then adding nickel powder and thickened organic hollow spheres to the organic hollow spheres. After mixing with the agent to make a slurry and applying it to the conductive core and drying,
It is characterized by being sintered.
また、前記予め膨張させた有機中空球体の中空度を９５
％以上とすると、より一層の効果を得ることが可能であ
る。Further, the degree of hollowness of the pre-expanded organic hollow spheres is 95.
% or more, further effects can be obtained.
（ホ）作 用
低沸点炭化水素を内包した有機中空球体は、この中空球
体の外壁に用いる樹脂の材質にも影響するが、樹脂の軟
化が始まる温度以上で一定時間保持すると、内部のガス
圧力の上昇により、その温度に応じた倍率にまで速やか
に膨張する。第１図は、この加熱温度と膨張倍率との関
係を示す図である。温度が高くなる程、膨張倍率が高く
なるが、ある温度を越えると樹脂壁の破壊が起こり、そ
れ以降は計算上の膨張倍率は低下する。また、図中にお
いて曲線の変曲点が膨張限界であり、このとき中空球体
は最大の体積となり、内包ガスはほとんど外部に逸散し
た状態となっている。(e) Effect: Organic hollow spheres containing low-boiling hydrocarbons will have an effect on the material of the resin used for the outer wall of the hollow sphere, but if the resin is kept at a temperature above the softening temperature for a certain period of time, the internal gas pressure will increase. As the temperature rises, it quickly expands to a magnification corresponding to the temperature. FIG. 1 is a diagram showing the relationship between this heating temperature and expansion magnification. The higher the temperature, the higher the expansion magnification, but if the temperature exceeds a certain point, the resin wall will break, and after that the calculated expansion magnification will decrease. Further, in the figure, the inflection point of the curve is the expansion limit, at which time the hollow sphere has the maximum volume, and most of the contained gas has dissipated to the outside.
このような低沸点炭化水素を内包した有機中空球体を造
孔剤に用いると、この中空球体は加熱することにより膨
張するため、スラリー乾燥時に中空球体が膨張してしま
い、前述したような問題が生じる。本発明ではこの有機
中空球体を予め加熱し膨張させておくことで、スラリー
乾燥時における中空球体の膨張を抑制し、この膨張に起
因する導電性芯体からのニッケル層のはがれや脱落を防
止することを可能としている。また、スラリー乾燥時に
基板内に温度分布のバラツキがあっても、中空球体は予
めＦＢ張させているのでその影響を受は難く、スラリー
中で加熱ｍ張させた場合に比較して、中空球体の粒径は
遥かに均一となる。必要であれば、スラリー混合前に中
空球体を分級しておくことにより、尚−層、均一性を向
上させることが可能である。中空球体の除去についても
、同一の多孔度を最小蓋の樹脂の添加で達成できるので
最も望ましいと考えられる。When organic hollow spheres containing such low-boiling point hydrocarbons are used as a pore-forming agent, the hollow spheres expand when heated, which causes the hollow spheres to expand during slurry drying, causing the problems described above. arise. In the present invention, by heating and expanding the organic hollow spheres in advance, expansion of the hollow spheres during slurry drying is suppressed, and peeling or falling off of the nickel layer from the conductive core due to this expansion is prevented. This makes it possible. In addition, even if there is variation in temperature distribution within the substrate during slurry drying, the hollow spheres are not affected by this because they have been stretched with FB in advance. The particle size is much more uniform. If necessary, layer uniformity can be further improved by classifying the hollow spheres before slurry mixing. Removal of hollow spheres is also considered most desirable since the same porosity can be achieved with minimal capping resin addition.
本発明に用いる上述した有機中空球体は、できるだけ大
きく膨張させておくと効果的であり、中空度９５％以上
になるまで膨張させておくと特に大きな効果が得られる
。但し、実用面からみると膨張限界まで均一に膨張させ
ることは難しいため、加熱時の温度のバラツキ等を考慮
して、前記変曲点よりやや低い温度で加熱し、樹脂壁の
破壊が起こらないようにすべきである。The above-mentioned organic hollow spheres used in the present invention are effective when expanded as much as possible, and a particularly great effect can be obtained when expanded to a degree of hollowness of 95% or more. However, from a practical point of view, it is difficult to uniformly expand the resin to the expansion limit, so taking into consideration temperature variations during heating, heating is done at a temperature slightly lower than the above-mentioned inflection point to prevent damage to the resin wall. It should be done as follows.
（へ）実施例
有機中空球体として、低沸点炭化水素を内包したメチル
メタアクリレート−アクリロニトリル共重合体を用い、
これを加熱膨張させ中空度が８５％、９０％、９５％及
び９７％のものを夫々作製した。次いで、ニッケル粉末
１００重量部と、純−セ。(f) Example Using a methyl methacrylate-acrylonitrile copolymer containing a low-boiling hydrocarbon as the organic hollow sphere,
This was heated and expanded to produce pieces with hollow degrees of 85%, 90%, 95%, and 97%, respectively. Next, 100 parts by weight of nickel powder and pure sesame.
水１００重量部とメチルタルロース３重量部と、ニッケ
ル粉末に対し１００ｖｏ１％の前記加熱膨張させた有機
中空球体を混合してスラリーとし、このスラリーをパン
チングメタルからなる導電性芯体に塗着、乾燥した後、
９００℃の還元性雰囲気中で焼結して焼結基板を得た。100 parts by weight of water, 3 parts by weight of methyltalulose, and 100 vol 1% of the heat-expanded organic hollow spheres relative to nickel powder are mixed to form a slurry, and this slurry is applied to a conductive core made of punched metal; After drying,
A sintered substrate was obtained by sintering in a reducing atmosphere at 900°C.
こうして作製した焼結基板を、下表に示すように、使用
した有機中空球体の中空度により基板Ａ〜Ｄとすると共
に、その焼結基板の多孔度を下表に示す。The sintered substrates thus produced were designated as substrates A to D according to the degree of hollowness of the organic hollow spheres used, as shown in the table below, and the porosity of the sintered substrates is shown in the table below.
表
ここにおいて、基板Ａ、Ｂの多孔度が、基板Ｃ，Ｄに比
べて、高くなっているのは、スラリーの乾燥時に有機中
空球体が膨張したためである。In the table, the reason why the porosity of substrates A and B is higher than that of substrates C and D is because the organic hollow spheres expanded when the slurry was dried.
これに対し、有機中空球体の中空度が９５％のものを用
いた基板Ｃ及びＤは、多孔度はほとんど変わらず、膨張
が起こっていないものと考えられる。On the other hand, substrates C and D using organic hollow spheres with a hollowness of 95% have almost no change in porosity, and it is considered that no expansion has occurred.
次に、焼結基板を硝酸ニッケル水溶液に浸漬４し
後、アルカリ処理を行なう通常の科学含浸法を用いて、
上記基板Ａ〜Ｄに水酸化ニッケルを充填してニッケル極
を作製した。Next, the sintered substrate was immersed in an aqueous nickel nitrate solution4, and then treated with an alkali using the usual scientific impregnation method.
Nickel electrodes were prepared by filling the substrates A to D with nickel hydroxide.
前記ニッケル極を、カドミウム極との間にセパレータを
介在させて渦巻状に巻回した後巻回をほどき、このとき
の処理前後におけるニッケル極の重量差を測定した。こ
の結果を第２図に示す。The nickel electrode was spirally wound with a separator interposed between it and the cadmium electrode, and then unwound, and the difference in weight of the nickel electrode before and after the treatment was measured. The results are shown in FIG.
また、前記ニッケル極を巻回せずに用い、対極をニッケ
ル板として水酸化カリウム水溶液中で２Ｃの電流で３時
間充電するという過充電試験を行なった。このときの試
験前後におけるニッケル極の重量差を測定し、この結果
を第３図に示す。Further, an overcharge test was conducted in which the nickel electrode was used without being wound, and the counter electrode was a nickel plate, and the battery was charged in a potassium hydroxide aqueous solution with a current of 2 C for 3 hours. At this time, the difference in weight of the nickel electrode before and after the test was measured, and the results are shown in FIG.
第２図及び第３図から明らかなように、有機中空球体の
中空度が高くなるにしたがって、ニッケル極の重量変化
率が小さくなり、中空度が９５％以上になると重量変化
率が非常に小さく抑えられることがわかる。また、重量
の変化は主に活物質が充填されたニッケル焼結層、いわ
ゆる活物質層の導電性芯体からの剥離、脱落によるもの
であった。このように、有機中空球体の中空度が小さい
程、重量変化率が大きくなるのは、中空度が小さいもの
は加熱により更に膨張する余力があり、中空度が小さい
もの程膨張による体積の増加が大きくなることに起因す
ると考えられる。このため、中空度の小さいもの程、ス
ラリー乾燥時の膨張により導電性芯体からニッケル層を
引き離そうとする力が大きくかかり、この結果、完成基
板における導電性芯体とニッケル焼結体との密着性が低
下し、剥離、脱落が生じる。As is clear from Figures 2 and 3, as the degree of hollowness of the organic hollow sphere increases, the rate of weight change of the nickel electrode decreases, and when the degree of hollowness exceeds 95%, the rate of weight change becomes extremely small. I know it can be suppressed. Moreover, the change in weight was mainly due to peeling or falling off of the nickel sintered layer filled with active material, the so-called active material layer, from the conductive core. In this way, the smaller the degree of hollowness of an organic hollow sphere, the greater the rate of weight change.The reason why the rate of weight change becomes larger as the degree of hollowness of organic hollow spheres decreases is because those with a small degree of hollowness have extra power to expand further when heated, and the smaller the degree of hollowness, the more the volume increases due to expansion. This is thought to be due to the increase in size. For this reason, the smaller the degree of hollowness, the greater the force exerted to separate the nickel layer from the conductive core due to the expansion during slurry drying, resulting in the close contact between the conductive core and the nickel sintered body in the finished board. The properties of the product decrease, and peeling and shedding occur.
また、中空度９５％の有機中空球体を用いる場合と、中
空度９０％の有機中空球体を用いる場合では、同等の多
孔度を得るための有機中空球体の樹脂量は、９５％の場
合の方が９０％の場合の２／３で良いことが、他の実験
により確認できた。これにより、中空度を９５％以上の
有機中空球体を用いることにより、基板強度の向上と共
に樹脂量の削減効果もより大きなものとなることがわか
る。In addition, when using organic hollow spheres with a hollowness of 95% and when using organic hollow spheres with a hollowness of 90%, the amount of resin in the organic hollow sphere to obtain the same porosity is higher than that in the case of 95%. It was confirmed through other experiments that 2/3 of 90% is sufficient. This shows that by using organic hollow spheres with a degree of hollowness of 95% or more, the effect of reducing the amount of resin as well as improving the substrate strength becomes greater.
（ト）発明の効果
本発明によれば、低沸点炭化水素を内包した有機中空球
体を造孔剤として用いた場合における、導電性芯体から
のニッケル層のはがれ、脱落を防止でき、高多孔度のア
ルカリ蓄電池用焼結基板を提供できると共に、造孔剤と
して使用する樹脂量が少なくなり、焼結時に発生する樹
脂の分解生成物も少なく抑えることが可能となる。(G) Effects of the Invention According to the present invention, when organic hollow spheres containing low-boiling hydrocarbons are used as a pore-forming agent, peeling and falling off of the nickel layer from the conductive core can be prevented, and the nickel layer can be highly porous. In addition to being able to provide a sintered substrate for alkaline storage batteries, the amount of resin used as a pore-forming agent is reduced, and it is possible to suppress the amount of resin decomposition products generated during sintering.
第１図は加熱温度と有機中空球体の膨張倍率との関係を
示す図、第２図及び第３図は有機中空球体と極板の重量
変化率との関係を示す図である。FIG. 1 is a diagram showing the relationship between the heating temperature and the expansion ratio of the organic hollow sphere, and FIGS. 2 and 3 are diagrams showing the relationship between the weight change rate of the organic hollow sphere and the electrode plate.
Claims (2)
熱し膨張させた後、前記有機中空球体をニッケル粉末及
び増粘剤と共に混合してスラリーとなし、導電性芯体に
塗着し乾燥した後、焼結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) After preheating and expanding organic hollow spheres containing low-boiling point hydrocarbons, the organic hollow spheres are mixed with nickel powder and a thickener to form a slurry, which is applied to a conductive core and dried. A method for producing a sintered substrate for an alkaline storage battery, the method comprising:
５％以上であることを特徴とする請求項（１）記載のア
ルカリ蓄電池用焼結基板の製造方法。(2) The degree of hollowness of the pre-expanded organic hollow sphere is 9
The method for producing a sintered substrate for an alkaline storage battery according to claim 1, wherein the content is 5% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1096709A JP2798700B2 (en) | 1989-04-17 | 1989-04-17 | Method for producing sintered substrate for alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1096709A JP2798700B2 (en) | 1989-04-17 | 1989-04-17 | Method for producing sintered substrate for alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02276160A true JPH02276160A (en) | 1990-11-13 |
| JP2798700B2 JP2798700B2 (en) | 1998-09-17 |
Family
ID=14172276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1096709A Expired - Lifetime JP2798700B2 (en) | 1989-04-17 | 1989-04-17 | Method for producing sintered substrate for alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2798700B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824925B2 (en) | 2001-07-10 | 2004-11-30 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing base for electrode plate, method for manufacturing positive electrode plate and alkaline storage battery |
| JP2008166211A (en) * | 2006-12-30 | 2008-07-17 | Sanyo Electric Co Ltd | Sintered nickel positive electrode for alkali storage battery and alkali storage battery |
| JP2019526710A (en) * | 2016-10-14 | 2019-09-19 | エルジー・ケム・リミテッド | Metal foam manufacturing method |
-
1989
- 1989-04-17 JP JP1096709A patent/JP2798700B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824925B2 (en) | 2001-07-10 | 2004-11-30 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing base for electrode plate, method for manufacturing positive electrode plate and alkaline storage battery |
| JP2008166211A (en) * | 2006-12-30 | 2008-07-17 | Sanyo Electric Co Ltd | Sintered nickel positive electrode for alkali storage battery and alkali storage battery |
| JP2019526710A (en) * | 2016-10-14 | 2019-09-19 | エルジー・ケム・リミテッド | Metal foam manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2798700B2 (en) | 1998-09-17 |
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