JPH02265165A - Nickel electrode for alkaline storage battery - Google Patents
Nickel electrode for alkaline storage batteryInfo
- Publication number
- JPH02265165A JPH02265165A JP1086299A JP8629989A JPH02265165A JP H02265165 A JPH02265165 A JP H02265165A JP 1086299 A JP1086299 A JP 1086299A JP 8629989 A JP8629989 A JP 8629989A JP H02265165 A JPH02265165 A JP H02265165A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- active material
- layer
- nickel
- cobalt
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 29
- 239000011149 active material Substances 0.000 claims abstract description 44
- -1 cobalt oxyhydroxide Chemical compound 0.000 claims abstract description 14
- 230000002427 irreversible effect Effects 0.000 claims abstract description 9
- 238000007747 plating Methods 0.000 claims description 19
- 229910017052 cobalt Inorganic materials 0.000 claims description 17
- 239000010941 cobalt Substances 0.000 claims description 17
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 150000001869 cobalt compounds Chemical class 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(II) oxide Inorganic materials [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 6
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000761389 Copa Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 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
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002562 thickening agent 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、アルカリ蓄電池用ニッケｌｖ電極に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a nickel lv electrode for alkaline storage batteries.
従来技術とその問題点
ニッケルーカドミウム蓄電池用ニッケμ！極には、ニッ
ケル粉末を穿孔銅板に焼結した微孔基板（多孔度８０％
）にニッケμ塩を減圧含浸させた後、アルカリ水溶液中
で水酸化ニッケ〃に変換することによって活物質である
水酸化ニッケルを充填させたシンター式と称するものと
、芯金を持たない高多孔質（多孔度９０〜９８％）耐ア
ルカリ性金ｒ４繊維焼結体に水酸化ニッケル粉末をスラ
リー状にして直接充填させたペースト式と称するものが
ある。Conventional technology and its problems Nickeμ for nickel-cadmium storage batteries! The poles are made of a microporous substrate (80% porosity) made by sintering nickel powder onto a perforated copper plate.
) is impregnated with nickel μ salt under reduced pressure, and then converted to nickel hydroxide in an alkaline aqueous solution to fill it with nickel hydroxide, an active material. There is a so-called paste type in which nickel hydroxide powder is made into a slurry and directly filled into a sintered body of alkali-resistant gold R4 fibers (porosity: 90-98%).
周知のごとく前者のエネルギー密度は、基板多孔度が低
いことに起因し４００ｍＡＨ／Ｃｃ稈度が限界である。As is well known, the energy density of the former is limited to 400 mAH/Cc culmness due to the low porosity of the substrate.
そのため、現在急速に進歩しつつあるポータプルエレク
トロニクス機器の軽量化に伴う市場ニーズ（６００１＊
Ａｈ ／ｃｃ程度を要求）に対応することが困難な状況
にある。更に、シンター式は製造法が煩雑な充填工程を
必要とするため、コスト高になるなどの欠点も併せ持っ
ていた。ペースト式はこれらの欠点を改良するべく開発
されたものであり、集電体・活物質・添加剤などの広い
観点からの改良・開発により、エネμギー密度的にはほ
ぼ現在の市場ニーズに対応できる高密度化が達成されて
いる。しかしながら、集電体である耐アルカリ性高多孔
度金属歇紋焼結体が高価なため材料価格の点で問題が残
されている。また、電池への多様化する市場ニーズには
、薄型ニッケル電極の要求も出現しつつある。Therefore, the market needs (6001*
It is now difficult to meet the demand (Ah/cc). Furthermore, the sintering method requires a complicated filling process, so it also has the drawback of high costs. The paste type was developed to improve these drawbacks, and by improving and developing the current collector, active material, additives, etc. from a wide range of perspectives, it has almost met the current market needs in terms of energy density. The corresponding high density has been achieved. However, since the alkali-resistant highly porous metal sintered sintered body that serves as the current collector is expensive, there remains a problem in terms of material cost. In addition, a demand for thin nickel electrodes is emerging to meet diversifying market needs for batteries.
そこで、ペースト式電極において、活物質に添加されて
いる二価コバルト化合物によって形成されるオキシ水酸
化コバルトの導電性ネットワークの有効距断を考慮する
ことで、ニッケル箔およびニッケルメツシュな集電体と
する安価な薄型のニッケル電極を得る方法が検討されて
いる。二価コバルト化合物添加剤による導電性ネットワ
ーク形成法には、活物質全体に−様なオキシ水酸化コバ
ルトの導電性ネットワークを得るには有効であるが、ニ
ッケル箔およびニッケルメツシュのような活物質と集電
体との距離が離れているものを使用する場合には十分と
は言えない。特に最も導電性が必要とされる集電体と活
物質の境界部分においてはこのことが顕著に現われ、高
エネルギー密度化を達成するうえで障害となっている。Therefore, in paste-type electrodes, by considering the effective distance of the conductive network of cobalt oxyhydroxide formed by the divalent cobalt compound added to the active material, it is possible to use nickel foil and nickel mesh current collectors. Methods of obtaining thin, inexpensive nickel electrodes are being considered. The method of forming a conductive network using divalent cobalt compound additives is effective in obtaining a conductive network of cobalt oxyhydroxide throughout the active material, but it is effective to form a conductive network of cobalt oxyhydroxide throughout the active material. This is not sufficient when using a device in which the current collector is far away from the current collector. This is particularly noticeable at the boundary between the current collector and the active material, where electrical conductivity is most required, and is an obstacle to achieving high energy density.
その他にも、集電体と活物質との直接的な接触は集電体
である金属ニッケル表面が腐食を受けやすく、腐食生成
物に起因するγ−ＮｉＯＯＥの生成しやすさおよびこれ
に伴うサイクル寿命低下等の見地からも、この境界部分
におけるオキシ水酸化コバルトの堅固な層の形成を必要
としている。In addition, direct contact between the current collector and the active material makes the metal nickel surface of the current collector susceptible to corrosion, which increases the ease of formation of γ-NiOOE due to corrosion products and the associated cycle cycle. Also from the viewpoint of reducing lifespan, it is necessary to form a firm layer of cobalt oxyhydroxide at this boundary portion.
発明の目的
本発明は、集電体と活物質との直接接触な防止した、高
性能で高容量かつ生産性の高い安価な薄形のアルカリ蓄
電池用ニッケμ電極を提供することを目的とする。OBJECTS OF THE INVENTION An object of the present invention is to provide a low-cost, thin nickel μ electrode for alkaline storage batteries with high performance, high capacity, and high productivity, which prevents direct contact between a current collector and an active material. .
発明の構成
本発明は上記目的を達成するべく、集電体とそれに接す
る活物質層の第一層との境界部に導電性を有する電気化
学的に不可逆な層を形成したことを特徴とするアμカリ
蓄電池用ニッケρ電極である。Structure of the Invention In order to achieve the above object, the present invention is characterized in that a conductive and electrochemically irreversible layer is formed at the boundary between the current collector and the first layer of the active material layer in contact with the current collector. This is a nickel ρ electrode for an alkali storage battery.
また、上記の集電体と活物質層との境界部に形成させる
導電性を有する電気化学的に不可逆な層がオキシ水酸化
コバルトを主体とする層であるアルカリ蓄電池用二、・
・ケ〃電極である。In addition, for an alkaline storage battery, the conductive electrochemically irreversible layer formed at the boundary between the current collector and the active material layer is a layer mainly composed of cobalt oxyhydroxide.
・It is an electrode.
なお、オキシ水酸化コバルトを主体とする層が、集電体
表面にメッキされた金属コバルトあるいは電解析出され
たコバルト化合物より形成されたアルカリ蓄電池用ニッ
ケ／Ｌ’電極である。Note that the layer mainly composed of cobalt oxyhydroxide is a nickel/L' electrode for an alkaline storage battery formed from metallic cobalt plated on the surface of the current collector or a cobalt compound electrolytically deposited.
これらオキシ水酸化コバルトを主体とする層が集電体表
面にメッキされた金属コバルトより形成される場合、そ
の集電体表面のコバルトのメッキ厚みが２〜５ｐｍの範
囲にあるア〃カリ蓄電池用ニッケル電極である。When the layer mainly composed of cobalt oxyhydroxide is formed from metal cobalt plated on the surface of the current collector, the thickness of the cobalt plating on the surface of the current collector is in the range of 2 to 5 pm. It is a nickel electrode.
更に、集電体がニッケルメツシュ１ニツケル箔、金属繊
維焼結体、発泡メタ〃より選ばれたものであるアルカリ
蓄電池用ニッケ！電極である０
実施例
以下、本発明の一実施例について詳述する◇水酸化ニッ
ケ〃粉末単独からなる活物質ムと水酸化ニッケμ粉末９
０ｗｔ％と一酸化コパμト１０ｗｔ％を混合した活物質
Ｂのそれぞれに、力μボキシメチ〃セμロースを増粘剤
とする水溶液を加えて２種類のスラリー状活物質とする
。Furthermore, nickel for alkaline storage batteries where the current collector is selected from nickel mesh, nickel foil, sintered metal fiber, and foamed metal! 0 Example, which is an electrode An example of the present invention will be described in detail below. ◇ An active material consisting of nickel hydroxide powder alone and nickel hydroxide μ powder 9
An aqueous solution containing 0wt% of copper monoxide and 10wt% of copper monoxide as a thickener is added to each of the active materials B to prepare two types of slurry-like active materials.
集電体には、厚さ１０／Ｊ＃！のニッケル箔およびその
表面に片側１〜８μｍの厚さでコバルトメッキをほどこ
したものを使用した。第１図に充放電試験前のニッケル
箔のＸ線チャート図を示す。The current collector has a thickness of 10/J#! A nickel foil whose surface was plated with cobalt to a thickness of 1 to 8 μm on one side was used. FIG. 1 shows an X-ray chart of the nickel foil before the charge/discharge test.
図中の値はニッケ〃の（２００）面と（１００）面との
強度比である。The values in the figure are the intensity ratios of the (200) and (100) planes of nickel.
この集電体に、上記の２種類の活物質スラリ−を片側１
００μｍの厚さで塗着・乾燥し、薄形のニッケ／Ｌ’電
極を得た。One side of the current collector was coated with the above two types of active material slurry.
The coating was applied to a thickness of 00 μm and dried to obtain a thin nickel/L' electrode.
このニッケル電極と対極としてペースト式カドミウム［
ｍを組み合わせて、Ｉｉ −１，２６ＫＯＨを注液し、
液ダブ式の電池を得た。この電池を２４時間放置後、湿
度２０ｕにおいて充電０．１ＯＡ１１５時間、放！０．
２ＯＡ（終止電圧１． ＯＯＶ ）を１０サイクμ繰り
返し試験した。集電体表面のコバルトメッキの厚さと活
物質利用率の関係を調べた結果を第２図に示した。活物
質Ａについて、集電体表面にほどこしたコバルトメッキ
単独の効果を検討すると、コバルトのメッキ厚さが４μ
ｍまではメッキ厚さの増加に伴い活物質利用率が向上し
ている。これは集電体表面にほどこしたコバルトメッキ
によって集電体と活物質との境界部分にオキシ水酸化コ
バルトの強力な導電性ネットワーク層が形成されたため
である。This nickel electrode and the counter electrode are paste-type cadmium [
m, inject Ii-1,26KOH,
A liquid-dub type battery was obtained. After leaving this battery for 24 hours, it was charged at 0.1OA for 115 hours at a humidity of 20U, and then released! 0.
The test was repeated at 2OA (end voltage 1.0V) for 10 cycles μ. Figure 2 shows the results of investigating the relationship between the thickness of the cobalt plating on the surface of the current collector and the utilization rate of the active material. Regarding active material A, when examining the effect of cobalt plating alone on the surface of the current collector, it is found that the cobalt plating thickness is 4 μm.
Up to m, the active material utilization rate improves as the plating thickness increases. This is because a strong conductive network layer of cobalt oxyhydroxide was formed at the boundary between the current collector and the active material by the cobalt plating applied to the surface of the current collector.
しかし、メッキ厚さが５μｍを越えると逆にメッキ厚さ
の増加と共に活物質層ｍ率は低下している。これはメッ
キされたコバルトが全てオキシ水酸化コバルトに変化で
きず、非導電性の一酸化コバルトに起因する不ＷＩＪＷ
ＪＡ化した状態でニッケル表面に残存するためである。However, when the plating thickness exceeds 5 μm, the m ratio of the active material layer decreases as the plating thickness increases. This is because all of the plated cobalt cannot be converted into cobalt oxyhydroxide, resulting in nonconductive cobalt monoxide.
This is because it remains on the nickel surface in a JA state.
活物質Ｂについては活物質Ａと比較して更に活物質利用
率が向上していることがわかる。これは、集電体表面の
コバルトメッキによって集電体と活物質の境界部に形成
される強力な導電性ネットワーク層と活物質に添加した
一酸化コバ〃トによって活物質粒子間に一様１こ形成、
される導電性ネットワークの相乗効果によるものである
。しかし、活物質Ｂの場合にも活物質Ａと同様に活物質
利用率の向上に有効なコバルトのメッキ厚みは４μｍま
でであって、それ以上のメッキ厚みでは逆に活物質利用
率の低下を招く。活物質Ａに比べ活物質Ｂの方が活物質
利用率の低下の度合いが大きい。これは活物質に添加さ
れている一酸化コバルトが２４時間放置により溶解し集
電体表面に再析出したためにコバルトメッキの効果に付
加されることによるものと推定される。It can be seen that the active material utilization rate of active material B is further improved compared to active material A. This is due to the strong conductive network layer formed at the boundary between the current collector and the active material by cobalt plating on the surface of the current collector, and the cobalt monoxide added to the active material to create a uniform layer between the active material particles. This formation,
This is due to the synergistic effect of the conductive network. However, in the case of active material B, as with active material A, the effective cobalt plating thickness for improving the active material utilization rate is up to 4 μm, and a plating thickness greater than that will conversely reduce the active material utilization rate. invite Compared to active material A, active material B has a greater degree of decrease in active material utilization. This is presumed to be because the cobalt monoxide added to the active material was dissolved by standing for 24 hours and redeposited on the surface of the current collector, which added to the effect of cobalt plating.
第１表にそれぞれのニッケル箔集電体の充放電後のニッ
ケルの（２００）面と（１００）面との強度比を示す。Table 1 shows the strength ratio between the (200) plane and the (100) plane of nickel after charging and discharging each nickel foil current collector.
メッキ厚さの小さいものほど強度比の変化が大きくなっ
ており、ニッケル箔集電体の腐食が激しいことを示して
いる。この結果から集電体表面に形成されるオキシ水酸
化コバルト層が集電体の防食に効果的であることがわか
るＯ
第 １ 表
以上の結果から添加剤との相乗効果を考慮して、集電体
表面のコバ／Ｌ’）メッキの厚みは２〜５μｍの範囲に
あるものが最も適切である。The smaller the plating thickness, the greater the change in the strength ratio, indicating that the nickel foil current collector is more severely corroded. This result shows that the cobalt oxyhydroxide layer formed on the surface of the current collector is effective in preventing corrosion of the current collector. The most appropriate thickness of the edge/L') plating on the surface of the electric body is in the range of 2 to 5 μm.
尚、上記実施例において、集電体とそれに接する活物質
層の第一層との境界部に導電性を有する電気化学的に不
可逆な層を形成する方法として、集電体表面にコバルト
メッキを行なったが、集電体表面にコバρト化合物を電
解析出させても同様の結果が得られた。また、活物質に
加える添加剤として一酸化コパＡ／）を用いた実施例を
示したが、ａ −００（ＯＨ）２ 、β−００（ＯＨ）
２を用いても同様の結果を示した。In the above example, cobalt plating was applied to the surface of the current collector as a method of forming an electrochemically irreversible layer having conductivity at the boundary between the current collector and the first layer of the active material layer in contact with the current collector. However, similar results were obtained when a cobalt compound was electrolytically deposited on the surface of the current collector. In addition, an example was shown in which copa monoxide A/) was used as an additive added to the active material, but a-00(OH)2, β-00(OH)
2 showed similar results.
上述した如く、集電体とそれに接する活物質層の第一層
との境界部に導電性を有する電気化学的に不可逆な層を
形成することにより集電体と活物質との直接接触を防止
することで、高利用率で各種特性の優れた安価な薄型ニ
ッケル電極を得ることができる。特に境界部に形成する
導電性を有する電気化学的に不可逆な層がオキシ水酸化
コバρトであり、その層形成が集電体表面にほどこされ
たコバルトメッキを出発物質とする場合、メッキ厚が２
〜５μｍの範囲が効果の点で非常に大である。As mentioned above, direct contact between the current collector and the active material is prevented by forming a conductive electrochemically irreversible layer at the boundary between the current collector and the first layer of the active material layer in contact with it. By doing so, it is possible to obtain an inexpensive thin nickel electrode with a high utilization rate and excellent various properties. In particular, when the conductive, electrochemically irreversible layer formed at the boundary is cobalt oxyhydroxide, and the layer is formed using cobalt plating applied to the surface of the current collector as a starting material, the plating thickness is 2
The range of ~5 μm is very effective.
発明の効果
本発明は、集電体と活物質との両液接触を防１ｎ−
止した、高性能で高容量かつ生産性の高い安価な薄形ニ
ッケル電極を提供することができるので、その工業的価
値は極めて大である。Effects of the Invention The present invention can provide a high-performance, high-capacity, highly productive, and inexpensive thin nickel electrode that prevents liquid contact between the current collector and the active material. The industrial value is extremely large.
第１図は充放電試験前のニッケμ箔のＸ線チャート図を
、第２図は集電体表面のコバルトのメッキ厚ざと活物質
利用率の関係を示した図である。FIG. 1 is an X-ray chart of the nickel μ foil before the charge/discharge test, and FIG. 2 is a diagram showing the relationship between the cobalt plating thickness on the current collector surface and the active material utilization rate.
Claims (5)
部に導電性を有する電気化学的に不可逆な層を形成した
ことを特徴とするアルカリ蓄電池用ニッケル電極。(1) A nickel electrode for an alkaline storage battery, characterized in that a conductive, electrochemically irreversible layer is formed at the boundary between a current collector and a first active material layer in contact with the current collector.
層である請求項１記載のアルカリ蓄電池用ニッケル電極
。(2) The nickel electrode for an alkaline storage battery according to claim 1, wherein the irreversible layer is a layer mainly composed of cobalt oxyhydroxide.
表面にメッキされた金属コバルトあるいは電解析出され
たコバルト化合物より形成された請求項２記載のアルカ
リ蓄電池用ニッケル電極。(3) The nickel electrode for an alkaline storage battery according to claim 2, wherein the layer mainly composed of cobalt oxyhydroxide is formed of metal cobalt plated on the surface of the current collector or a cobalt compound electrolytically deposited.
請求項３記載のアルカリ蓄電池用ニッケル電極。(4) The nickel electrode for an alkaline storage battery according to claim 3, wherein the cobalt plating thickness is in the range of 2 to 5 μm.
維焼結体、発泡メタルより選ばれたものである請求項１
記載のアルカリ蓄電池用ニッケル電極。(5) Claim 1, wherein the current collector is selected from nickel mesh, nickel foil, metal fiber sintered body, and foam metal.
The described nickel electrode for alkaline storage batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1086299A JPH02265165A (en) | 1989-04-04 | 1989-04-04 | Nickel electrode for alkaline storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1086299A JPH02265165A (en) | 1989-04-04 | 1989-04-04 | Nickel electrode for alkaline storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02265165A true JPH02265165A (en) | 1990-10-29 |
Family
ID=13882956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1086299A Pending JPH02265165A (en) | 1989-04-04 | 1989-04-04 | Nickel electrode for alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02265165A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5984982A (en) * | 1997-09-05 | 1999-11-16 | Duracell Inc. | Electrochemical synthesis of cobalt oxyhydroxide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61263047A (en) * | 1985-05-16 | 1986-11-21 | Yuasa Battery Co Ltd | Nickel electrode for alkaline battery |
| JPS6258566A (en) * | 1985-09-06 | 1987-03-14 | Sanyo Electric Co Ltd | Manufacture of nickel hydroxide electrode for alkaline storage battery |
| JPS63114061A (en) * | 1986-10-30 | 1988-05-18 | Sanyo Electric Co Ltd | Manufacture of sintered nickel electrode for alkaline storage battery |
-
1989
- 1989-04-04 JP JP1086299A patent/JPH02265165A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61263047A (en) * | 1985-05-16 | 1986-11-21 | Yuasa Battery Co Ltd | Nickel electrode for alkaline battery |
| JPS6258566A (en) * | 1985-09-06 | 1987-03-14 | Sanyo Electric Co Ltd | Manufacture of nickel hydroxide electrode for alkaline storage battery |
| JPS63114061A (en) * | 1986-10-30 | 1988-05-18 | Sanyo Electric Co Ltd | Manufacture of sintered nickel electrode for alkaline storage battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5984982A (en) * | 1997-09-05 | 1999-11-16 | Duracell Inc. | Electrochemical synthesis of cobalt oxyhydroxide |
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