JPH06196163A - Alkaline storage battery - Google Patents
Alkaline storage batteryInfo
- Publication number
- JPH06196163A JPH06196163A JP4357500A JP35750092A JPH06196163A JP H06196163 A JPH06196163 A JP H06196163A JP 4357500 A JP4357500 A JP 4357500A JP 35750092 A JP35750092 A JP 35750092A JP H06196163 A JPH06196163 A JP H06196163A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- electrode plate
- storage battery
- concentration
- alkaline
- 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.)
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Classifications
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- 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
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- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アルカリ蓄電池に関す
る。FIELD OF THE INVENTION The present invention relates to an alkaline storage battery.
【０００２】[0002]
【従来の技術】従来、ニッケル−カドミウム電池、ニッ
ケル−水素電池などのアルカリ蓄電池の正極として、焼
結式ニッケル極板とペースト式ニッケル極板があるが、
特にペースト式ニッケル極板は、電池の高容量化が可能
なために注目されている。2. Description of the Related Art Conventionally, as a positive electrode of an alkaline storage battery such as a nickel-cadmium battery or a nickel-hydrogen battery, there are a sintered nickel electrode plate and a paste nickel electrode plate.
In particular, the paste-type nickel electrode plate has attracted attention because it can increase the battery capacity.
【０００３】ペースト式ニッケル極板は、発泡ニッケル
基板やニッケル繊維フェルトなどの三次元網状組織から
成る多孔性金属基板に、活物質である水酸化ニッケル粉
末を増粘剤の水溶液で混練して成るペーストを充填し、
乾燥、圧延して成るものであるが、焼結式に比べて利用
率、急放電特性に劣り、また寿命が短い欠点があるの
で、導電性を高め、分極を小さくする目的で、水酸化ニ
ッケル粉末に水酸化コバルトを少量含有させ、更にこの
活物質にNi粉末（ニッケル粉末）、Co粉末（コバルト粉
末）、CoＯ粉末（酸化コバルト粉末）などの導電材を添
加し、増粘剤の水溶液で混練して成る混合物のペースト
を使用することが提案されている。The paste type nickel electrode plate is formed by kneading nickel hydroxide powder as an active material with an aqueous solution of a thickening agent on a porous metal substrate having a three-dimensional network structure such as a foamed nickel substrate or a nickel fiber felt. Fill the paste,
Although it is formed by drying and rolling, it has inferior utilization and rapid discharge characteristics compared to the sintering type and has a short life. Therefore, nickel hydroxide is used for the purpose of enhancing conductivity and reducing polarization. A small amount of cobalt hydroxide is added to the powder, and a conductive material such as Ni powder (nickel powder), Co powder (cobalt powder), CoO powder (cobalt oxide powder) is added to the active material, and an aqueous thickener solution is used. It has been proposed to use pastes of the kneaded mixture.
【０００４】[0004]
【発明が解決しようとする課題】しかし乍ら、かゝる導
電材としてCo又はCoＯを含んだペースト式ニッケル極板
を正極とし、これを水素吸蔵合金極板などの負極板とを
セパレータを介して積層して極板群を構成し、これを電
槽缶に挿入し、一般に好ましく用いられる30wt.%前後の
高濃度のアルカリ電解液を挿入した後、施蓋、封口して
密閉型ニッケル−水素アルカリ蓄電池を製造し、その電
池容量、急放電容量、サイクル寿命を測定し、その夫々
の利用率を調べた所、電池容量及び急放電容量の両方の
利用率が得られず、またサイクル寿命は極めて短いもの
しか得られなかった。従って、これらの電池特性を全て
向上させることが望まれる。However, a paste type nickel electrode plate containing Co or CoO as such a conductive material is used as a positive electrode, and this is connected to a negative electrode plate such as a hydrogen storage alloy electrode plate through a separator. To form an electrode plate group, which is then inserted into a battery case, and a generally-used high-concentration alkaline electrolyte of about 30 wt. When hydrogen alkaline storage battery was manufactured, its battery capacity, rapid discharge capacity and cycle life were measured, and the utilization rate of each was examined, the utilization rate of both battery capacity and rapid discharge capacity was not obtained, and the cycle life was also Got only a very short one. Therefore, it is desired to improve all of these battery characteristics.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記従来のペ
ースト式ニッケル極板を正極として用いたアルカリ蓄電
池の上記の欠点を解消し、正極の利用率が向上し、急放
電性能に優れ且つ頂寿命のアルカリ蓄電池を提供するも
ので、導電材として少なくともCo粉末又は／及びCoＯ粉
末を含有するペースト式ニッケル正極板と負極板とをセ
パレータを介して積層して成る極板群とアルカリ電解液
とを内蔵して成るアルカリ蓄電池において、該アルカリ
電解液として濃度35％以上のものを用いたことを特徴と
する。The present invention solves the above-mentioned drawbacks of the alkaline storage battery using the above-mentioned conventional paste type nickel electrode plate as a positive electrode, improves the utilization factor of the positive electrode, and is excellent in rapid discharge performance. Provided is an alkaline storage battery having a top life, and an electrode plate group and an alkaline electrolyte which are obtained by stacking a paste type nickel positive electrode plate containing at least Co powder and / or CoO powder as a conductive material and a negative electrode plate via a separator. In an alkaline storage battery having a built-in battery, the alkaline electrolyte having a concentration of 35% or more is used.
【０００６】[0006]
【作用】正極に含有するCoＯ粉末はアルカリ電解液中で
ＨCoＯ2 - イオンとなって溶解し、このイオンは活物質
粉末粒子間、或いは導電材としてNi粉末を併用した場合
はNi粉末粒子の間に拡散し、充電と共にCoＯOHに酸化さ
れ、導電材として機能する。Co粉末はそれ自体のアルカ
リ電解液への溶解は起こらないが、アルカリ電解液中の
溶存酸素が作用して酸化し、CoＯとなり、これがＨCoＯ
2 - イオンとなり同様に機能すると考えられる。このよ
うな機能は、電解液の濃度が35wt.%以上であるとき顕著
に効果を発揮し、利用率の向上をもたらす。[Function] The CoO powder contained in the positive electrode is dissolved in the alkaline electrolyte as HCoO 2 − ions, and these ions are dissolved between the active material powder particles, or between the Ni powder particles when Ni powder is also used as the conductive material. Diffuses into and is oxidized to CoOOH at the time of charging and functions as a conductive material. Although the Co powder does not dissolve itself in the alkaline electrolyte, it is oxidized by the action of dissolved oxygen in the alkaline electrolyte to form CoO, which is HCoO.
It is considered to be a 2 - ion and function similarly. Such a function exerts a remarkable effect when the concentration of the electrolytic solution is 35 wt.% Or more, and improves the utilization rate.
【０００７】この場合、導電材としてNi粉末との併用が
好ましい。Ni粉末は、CoＯ粉末、Co粉末のようなミクロ
領域の導電性を保障するのではなく、活物質粒子間のマ
イクロな領域での導電性を確保する。また、Ni粉末は、
充電の過程で、その一部が活物質に変化するが、この活
物質化現象は電解液濃度が高い方が一層顕著に起こるも
のと考えられる。尚、Ni粉末は、全てが活物質化したの
では導電材としての機能が失われるので、微細な粒子か
ら成る微粉末ばかりでなく、該微粉末とそれより大きい
粒子から成る粗粉末との混合粉末を使用することが好ま
しい。In this case, it is preferable to use Ni powder as a conductive material. The Ni powder does not guarantee the conductivity in the micro region like CoO powder and Co powder, but secures the conductivity in the micro region between the active material particles. Also, Ni powder is
A part of the material changes into an active material during the charging process, and it is considered that this phenomenon of becoming an active material is more remarkable when the concentration of the electrolytic solution is high. Incidentally, Ni powder loses its function as a conductive material when all are made into an active material, so not only fine powder consisting of fine particles but also a mixture of the fine powder and coarse powder consisting of particles larger than that. Preference is given to using powder.
【０００８】[0008]
【実施例】次に本発明の実施例を詳述する。先ず、下記
の３種類のペースト式ニッケル極板Ａ、Ｂ、Ｃを製造し
た。 極板Ａの製造：市販のNi粉末（INCO # 255）10ｇと市販
のCoＯ粉末（UN,Extra Fine Co Powder ）５ｇと球状粒
子から成る水酸化ニッケル粉末85ｇとを配合し、良く混
合した。得られた混合粉末に、２％のカルボキシメチル
セルロース水溶液35ｇを加えてペースト状とし、該ペー
ストを発泡ニッケル基板に充填し、乾燥し、これに５％
のPTFE分散液を含浸させ、次で乾燥した後圧延して所定
の厚みのペースト式ニッケル極板Ａを製造した。 極板Ｂの製造：市販のNi粉末（INCO # 255）10ｇと市販
のCoＯ粉末〔住友金属鉱山（株）製FCO-178 〕５ｇと球
状粒子から成る水酸化ニッケル粉末85ｇとを配合し、良
く混合した。得られた混合粉末を用い、以降は、上記極
板Ａの製造法と同じ方法でペースト式ニッケル極板Ｂを
製造した。 極板Ｃの製造：市販のNi粉末（INCO # 255）５ｇと、こ
れより粒子の小さいNi粉末（INCO # 210）５ｇと上記と
同じ市販の〔住友金属鉱山（株）製FCO-178 〕５ｇとを
配合し、良く混合した。得られた混合粉末を用い、以降
は、上記極板Ａの製造法と同じ方法で、ペースト式ニッ
ケル極板Ｃを製造した。 以上のように作製したペースト式ニッケル正極Ａ、Ｂ、
Ｃはいずれも理論容量が 1180mAhとなるようにした。EXAMPLES Next, examples of the present invention will be described in detail. First, the following three types of paste type nickel electrode plates A, B and C were manufactured. Production of electrode plate A: 10 g of commercially available Ni powder (INCO # 255), 5 g of commercially available CoO powder (UN, Extra Fine Co Powder) and 85 g of nickel hydroxide powder consisting of spherical particles were mixed and mixed well. To the obtained mixed powder, 35 g of a 2% carboxymethyl cellulose aqueous solution was added to form a paste, the nickel foam substrate was filled with the paste, and the paste was dried to give 5%.
Was impregnated with the above PTFE dispersion, dried and then rolled to produce a paste type nickel electrode plate A having a predetermined thickness. Production of electrode plate B: 10 g of commercially available Ni powder (INCO # 255), 5 g of commercially available CoO powder (FCO-178 manufactured by Sumitomo Metal Mining Co., Ltd.) and 85 g of nickel hydroxide powder consisting of spherical particles were blended well. Mixed. Using the obtained mixed powder, the paste type nickel electrode plate B was manufactured thereafter by the same method as the manufacturing method of the electrode plate A. Production of electrode plate C: 5 g of commercially available Ni powder (INCO # 255), 5 g of Ni powder with smaller particles (INCO # 210) and 5 g of the same commercially available [FCO-178 manufactured by Sumitomo Metal Mining Co., Ltd.] And were mixed and mixed well. Using the obtained mixed powder, the paste type nickel electrode plate C was manufactured thereafter by the same method as the above-mentioned manufacturing method of the electrode plate A. The pasted nickel positive electrodes A and B prepared as described above,
The C has a theoretical capacity of 1180 mAh.
【０００９】次に、これら極板Ａ、Ｂ、Ｃの各極板につ
いて、これを正極とし、MmNi系の水素吸蔵合金極板を負
極とし、これら極板をセパレータを介して積層し、捲回
して捲回極板群を夫々作製し、次でこれら３種の極板群
の各種について同じ寸法の円筒缶に挿入したものを多数
個作製し、その各種電池缶について、電解液濃度が25
％、30％、35％、37％、39％と異なり且つＫOH、NaOH、
LiOHの組成から成るアルカリ電解液を各缶に等量づつ、
例えば、２ccづつ注入し、直ちに常法により施蓋、封口
して、単３サイズで定格容量 1100mAhの密閉型ニッケル
−水素化物電池を多数個製造した。Next, for each of the electrode plates A, B, and C, this is used as a positive electrode, the MmNi-based hydrogen storage alloy electrode plate is used as a negative electrode, and these electrode plates are laminated via a separator and wound. Each of these three types of electrode plate groups was then inserted into a cylindrical can of the same size for each of these three types of electrode plate groups, and each of these battery cans had an electrolyte concentration of 25
%, 30%, 35%, 37%, 39% and KOH, NaOH,
Equal amount of alkaline electrolyte consisting of LiOH composition to each can,
For example, 2 cc each was injected, and a lid and a lid were immediately closed by a conventional method to manufacture a number of AA size sealed nickel-hydride batteries having a rated capacity of 1100 mAh.
【００１０】これらの電池につき、夫々、20℃の環境下
で 0.2Ｃの電流で 7.5時間充電し、同じ電流で電池電圧
が 1.0Ｖになるまで放電する操作を２回繰り返し、その
後40℃で24時間放電して初期活性化を行った。初期活性
化の後、以下の電池試験を行った。Each of these batteries was charged twice at a current of 0.2 C under an environment of 20 ° C. for 7.5 hours, and discharged at the same current until the battery voltage became 1.0 V, which was repeated twice at 40 ° C. Initial discharge was performed by discharging for a period of time. After the initial activation, the following battery test was conducted.
【００１１】容量試験：20℃、 0.2Ｃの電流で 7.5時
間充電した後、 0.2Ｃで電池電圧が 1.0Ｖになるまで放
電して容量を測定し、利用率を調べた。 急放電試験：20℃、 0.2Ｃの電流で 7.5時間充電した
後、３Ｃで電池電圧が 1.0Ｖになるまで放電して容量を
測定し、利用率を調べた。 サイクル寿命試験：25℃、１Ｃ−ΔＶ方式で充電を行
い、３Ｃで電池電圧が 1.0Ｖになるまで放電することを
繰り返し、電池容量が700mAhになるまでの充放電サイク
ル数を調べた。Capacity test: After charging at 20 ° C. and a current of 0.2 C for 7.5 hours, the battery was discharged at 0.2 C until the battery voltage became 1.0 V, the capacity was measured, and the utilization rate was investigated. Rapid discharge test: After charging at 20 ° C. and 0.2 C current for 7.5 hours, the battery was discharged at 3 C until the battery voltage became 1.0 V, the capacity was measured, and the utilization rate was investigated. Cycle life test: Charging was performed at 25 ° C. in 1C-ΔV system, and discharging was repeated at 3C until the battery voltage became 1.0 V, and the number of charge / discharge cycles until the battery capacity reached 700 mAh was examined.
【００１２】以上の電池試験の結果を表１に示す。The results of the above battery test are shown in Table 1.
【００１３】[0013]
【表１】[Table 1]
【００１４】上記表１から明らかなように、アルカリ電
解液の濃度が25wt.%の場合は、電池容量とその利用率並
びに急放電容量とその利用率が低く、またサイクル寿命
も 250以下と極めて短い。またその濃度が30wt.%の場合
は、電池容量とその利用率の向上は満足するが、急放電
容量とその利用率の向上が不充分で、更にサイクル寿命
は 400サイクル未満と短い。これに対し、アルカリ電解
液濃度が35wt.%以上の場合は、電池容量及びその利用
率、急放電容量とその利用率は共に著しく高くなり、又
サイクル寿命は 500サイクル以上と長寿命となる。As is clear from Table 1 above, when the concentration of the alkaline electrolyte is 25 wt.%, The battery capacity and its utilization rate and the rapid discharge capacity and its utilization rate are low, and the cycle life is extremely less than 250. short. When the concentration is 30 wt.%, The improvement of the battery capacity and its utilization rate is satisfied, but the rapid discharge capacity and its utilization rate are insufficiently improved, and the cycle life is shorter than 400 cycles. On the other hand, when the concentration of the alkaline electrolyte is 35 wt.% Or more, the battery capacity and its utilization rate, the rapid discharge capacity and its utilization rate are both significantly high, and the cycle life is 500 cycles or more, which is a long life.
【００１５】尚、上記の実施例に示されなかったが、導
電材としてCo粉末とCoＯ粉末とを混合したものを使用し
て同様にニッケル極板を作製し、これを正極として組み
込んだアルカリ蓄電池もアルカリ電解液濃度35wt.%〜39
wt.%の範囲で上記と同様の電池特性の改善、利用率の向
上を示した。Although not shown in the above examples, a nickel electrode plate was similarly prepared by using a mixture of Co powder and CoO powder as a conductive material, and this was incorporated as a positive electrode in an alkaline storage battery. Alkaline electrolyte concentration 35 wt.% ~ 39
In the wt.% range, the same improvements in battery characteristics and utilization as above were shown.
【００１６】尚、上記のCo粉末、CoＯ粉末、Ni粉末など
の導電材を、そのまゝ使用する代わりに、これらを乳鉢
やボールミルなどで磨砕処理した後、水酸化ニッケル活
物質と混ぜて成る混合物を使用するようにしても良く、
また該混合物を磨砕処理したものを使用するようにして
も良い。また、水酸化ニッケルとして水酸化コバルトを
少量、例えば１wt.%程度含有するものを使用することが
好ましい。Instead of using the above-mentioned Co powder, CoO powder, Ni powder or the like as a conductive material, these are ground in a mortar or ball mill and then mixed with a nickel hydroxide active material. May be used,
Alternatively, the mixture may be ground and used. Further, it is preferable to use nickel hydroxide containing a small amount of cobalt hydroxide, for example, about 1 wt.%.
【００１７】また、アルカリ電解液は、上記の三成分か
ら成る場合、ＫOHの配合は、三成分の重量の75wt.%以上
を占めることが好ましい。またアルカリ電解液は、ＫOH
単独でも良く、またNaOH或いはLiOHとの二成分から成る
ものでも良い。When the alkaline electrolyte is composed of the above-mentioned three components, it is preferable that the content of KOH accounts for 75 wt.% Or more of the weight of the three components. The alkaline electrolyte is KOH.
It may be used alone or may be composed of two components such as NaOH or LiOH.
【００１８】[0018]
【発明の効果】このように本発明によれば、導電材とし
て少なくともCo粉末又はCoＯ粉末又はその両者を含有す
るペースト式ニッケル極板を正極としたアルカリ蓄電池
において、アルカリ電解液の濃度を35wt.%以上とすると
きは、正極の利用率が高く、急放電特性に優れると共
に、長寿命のアルカリ蓄電池が得られる。この場合、導
電材としてNi粉と併用し、或いはNi粉を微粒粉末と粗粒
粉末との混合粉末の使用は、特に優れた電池が得られ
る。As described above, according to the present invention, in an alkaline storage battery having a positive electrode of a paste type nickel electrode plate containing at least Co powder or CoO powder or both as a conductive material, the concentration of the alkaline electrolyte is 35 wt. When it is at least%, the utilization factor of the positive electrode is high, the rapid discharge characteristic is excellent, and a long-life alkaline storage battery is obtained. In this case, a particularly excellent battery can be obtained by using Ni powder as a conductive material, or using Ni powder as a mixed powder of fine powder and coarse powder.
【表１】 [Table 1]
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年６月２１日[Submission date] June 21, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Name of item to be corrected] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００５】[0005]
【課題を解決するための手段】本発明は、上記従来のペ
ースト式ニッケル極板を正極として用いたアルカリ蓄電
池の上記の欠点を解消し、正極の利用率が向上し、急放
電性能に優れ且つ長寿命のアルカリ蓄電池を提供するも
ので、導電材として少なくともＣｏ粉末又は／及びＣｏ
Ｏ粉末を含有するペースト式ニッケル正極板と負極板と
をセパレータを介して積層して成る極板群とアルカリ電
解液とを内蔵して成るアルカリ蓄電池において、該アル
カリ電解液として濃度３５％以上のものを用いたことを
特徴とする。The present invention solves the above-mentioned drawbacks of the alkaline storage battery using the above-mentioned conventional paste type nickel electrode plate as a positive electrode, improves the utilization factor of the positive electrode, and is excellent in rapid discharge performance. The present invention provides a long- life alkaline storage battery, which comprises at least Co powder and / or Co as a conductive material.
An alkaline storage battery comprising an electrode group formed by laminating a paste type nickel positive electrode plate containing O powder and a negative electrode plate with a separator interposed therebetween and an alkaline electrolyte solution, wherein the concentration of the alkaline electrolyte solution is 35% or more. It is characterized by using things.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】この場合、導電材としてＮｉ粉末との併用
が好ましい。Ｎｉ粉末は、ＣｏＯ粉末、Ｃｏ粉末のよう
なミクロ領域の導電性を保障するのではなく、活物質粒
子間のマクロな領域での導電性を確保する。また、Ｎｉ
粉末は、充電の過程で、その一部が活物質に変化する
が、この活物質化現象は電解液濃度が高い方が一層顕著
に起こるものと考えられる。尚、Ｎｉ粉末は、全てが活
物質化したのでは導電材としての機能が失われるので、
微細な粒子から成る微粉末ばかりでなく、該微粉末とそ
れより大きい粒子から成る粗粉末との混合粉末を使用す
ることが好ましい。In this case, it is preferable to use Ni powder as a conductive material. Ni powder, CoO powder, rather than to ensure the conductivity of micro regions such as Co powder, to ensure conductivity in macro area between the active material particles. In addition, Ni
Part of the powder changes into an active material during the charging process, but it is considered that this phenomenon of becoming an active material is more remarkable when the concentration of the electrolyte is high. Since the Ni powder loses its function as a conductive material if all of it is made into an active material,
It is preferable to use not only a fine powder composed of fine particles, but also a mixed powder of the fine powder and a coarse powder composed of larger particles.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】[0008]
【実施例】次に本発明の実施例を詳述する。先ず、下記
の３種類のペースト式ニッケル極板Ａ、Ｂ、Ｃを製造し
た。 極板Ａの製造：市販のＮｉ粉末（ＩＮＣＯ ＃ ２５
５）１０ｇと市販のＣｏ粉末（ＵＭ，Ｅｘｔｒａ Ｆｉ
ｎｅ Ｃｏ Ｐｏｗｄｅｒ）５ｇと球状粒子から成る水
酸化ニッケル粉末８５ｇとを配合し、良く混合した。得
られた混合粉末に、２％のカルボキシメチルセルロース
水溶液３５ｇを加えてペースト状とし、該ペーストを発
泡ニッケル基板に充填し、乾燥し、これに５％のＰＴＦ
Ｅ分散液を含浸させ、次で乾燥した後圧延して所定の厚
みのペースト式ニッケル極板Ａを製造した。 極板Ｂの製造：市販のＮｉ粉末（ＩＮＣＯ ＃ ２５
５）１０ｇと市販のＣｏＯ粉末〔住友金属鉱山（株）製
ＦＣＯ−１７８〕５ｇと球状粒子から成る水酸化ニッケ
ル粉末８５ｇとを配合し、良く混合した。得られた混合
粉末を用い、以降は、上記極板Ａの製造法と同じ方法で
ペースト式ニッケル極板Ｂを製造した。 極板Ｃの製造：市販のＮｉ粉末（ＩＮＣＯ ＃ ２５
５）５ｇと、これより粒子の小さいＮｉ粉末（ＩＮＣＯ
＃ ２１０）５ｇと上記と同じ市販の〔住友金属鉱山
（株）製ＦＣＯ−１７８〕５ｇとを配合し、良く混合し
た。得られた混合粉末を用い、以降は、上記極板Ａの製
造法と同じ方法で、ペースト式ニッケル極板Ｃを製造し
た。 以上のように作製したペースト式ニッケル正極Ａ、Ｂ、
Ｃはいずれも理論容量が１１８０ｍＡｈとなるようにし
た。 ─────────────────────────────────────────────────────
EXAMPLES Next, examples of the present invention will be described in detail. First, the following three types of paste type nickel electrode plates A, B and C were manufactured. Production of electrode plate A: commercially available Ni powder (INCO # 25
5) 10g and commercially available Co Powder (UM, Extra Fi
5 g of ne Co Powder) and 85 g of nickel hydroxide powder consisting of spherical particles were mixed and mixed well. To the obtained mixed powder, 35 g of a 2% aqueous carboxymethyl cellulose solution was added to form a paste, the paste was filled in a nickel foam substrate and dried, and 5% PTF was added thereto.
The dispersion liquid E was impregnated, dried and then rolled to manufacture a paste type nickel electrode plate A having a predetermined thickness. Production of electrode plate B: commercially available Ni powder (INCO # 25
5) 10 g, 5 g of commercially available CoO powder [FCO-178 manufactured by Sumitomo Metal Mining Co., Ltd.] and 85 g of nickel hydroxide powder consisting of spherical particles were mixed and mixed well. Using the obtained mixed powder, the paste type nickel electrode plate B was manufactured thereafter by the same method as the manufacturing method of the electrode plate A. Production of electrode plate C: commercially available Ni powder (INCO # 25
5) 5g and Ni powder with smaller particles (INCO
5 g of # 210) and 5 g of the same commercially available [FCO-178 manufactured by Sumitomo Metal Mining Co., Ltd.] described above were mixed and mixed well. Using the obtained mixed powder, the paste type nickel electrode plate C was manufactured thereafter by the same method as the above-mentioned manufacturing method of the electrode plate A. The pasted nickel positive electrodes A and B prepared as described above,
The theoretical capacity of C was 1180 mAh. ─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年７月２日[Submission date] July 2, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】[0008]
【実施例】次に本発明の実施例を詳述する。先ず、下記
の３種類のペースト式ニッケル極板Ａ、Ｂ、Ｃを製造し
た。 極板Ａの製造：市販のＮｉ粉末（ＩＮＣＯ ＃ ２５
５）１０ｇと市販のＣｏ粉末（ＵＭ，Ｅｘｔｒａ Ｆｉ
ｎｅ Ｃｏ Ｐｏｗｄｅｒ）５ｇと球状粒子から成る水
酸化ニッケル粉末８５ｇとを配合し、良く混合した。得
られた混合粉末に、２％のカルボキシメチルセルロース
水溶液３５ｇを加えてペースト状とし、該ペーストを発
泡ニッケル基板に充填し、乾燥し、これに５％のＰＴＦ
Ｅ分散液を含浸させ、次で乾燥した後圧延して所定の厚
みのペースト式ニッケル極板Ａを製造した。 極板Ｂの製造：市販のＮｉ粉末（ＩＮＣＯ ＃ ２５
５）１０ｇと市販のＣｏＯ粉末〔住友金属鉱山（株）製
ＦＣＯ−１７８〕５ｇと球状粒子から成る水酸化ニッケ
ル粉末８５ｇとを配合し、良く混合した。得られた混合
粉末を用い、以降は、上記極板Ａの製造法と同じ方法で
ペースト式ニッケル極板Ｂを製造した。 極板Ｃの製造：市販のＮｉ粉末（ＩＮＣＯ ＃ ２５
５）５ｇと、これより粒子の小さいＮｉ粉末（ＩＮＣＯ
＃ ２１０）５ｇと上記と同じ市販のＣｏＯ粉末〔住
友金属鉱山（株）製ＦＣＯ−１７８〕５ｇと水酸化ニッ
ケル８５ｇとを配合し、良く混合した。得られた混合粉
末を用い、以降は、上記極板Ａの製造法と同じ方法で、
ペースト式ニッケル極板Ｃを製造した。 以上のように作製したペースト式ニッケル正極Ａ、Ｂ、
Ｃはいずれも理論容量が１１８０ｍＡｈとなるようにし
た。EXAMPLES Next, examples of the present invention will be described in detail. First, the following three types of paste type nickel electrode plates A, B and C were manufactured. Production of electrode plate A: commercially available Ni powder (INCO # 25
5) 10 g and commercially available Co powder (UM, Extra Fi
5 g of ne Co Powder) and 85 g of nickel hydroxide powder consisting of spherical particles were mixed and mixed well. To the obtained mixed powder, 35 g of a 2% aqueous carboxymethyl cellulose solution was added to form a paste, the paste was filled in a nickel foam substrate and dried, and 5% PTF was added thereto.
The dispersion liquid E was impregnated, dried and then rolled to manufacture a paste type nickel electrode plate A having a predetermined thickness. Production of electrode plate B: commercially available Ni powder (INCO # 25
5) 10 g, 5 g of commercially available CoO powder [FCO-178 manufactured by Sumitomo Metal Mining Co., Ltd.] and 85 g of nickel hydroxide powder consisting of spherical particles were mixed and mixed well. Using the obtained mixed powder, the paste type nickel electrode plate B was manufactured thereafter by the same method as the manufacturing method of the electrode plate A. Production of electrode plate C: commercially available Ni powder (INCO # 25
5) 5g and Ni powder with smaller particles (INCO
# 210) 5 g and the same commercially available CoO powder as the above [FCO-178 manufactured by Sumitomo Metal Mining Co., Ltd.] 5 g and hydroxide hydroxide
Kel 85g was blended and mixed well. The obtained mixed powder is used, and thereafter, in the same manner as in the production method of the electrode plate A,
A paste type nickel electrode plate C was manufactured. The pasted nickel positive electrodes A and B prepared as described above,
The theoretical capacity of C was 1180 mAh.
Claims (5)
びCoＯ粉末を含有するペースト式ニッケル正極板と負極
板とをセパレータを介して積層して成る極板群とアルカ
リ電解液とを内蔵して成るアルカリ蓄電池において、該
アルカリ電解液として濃度35％以上のものを用いたこと
を特徴とするアルカリ蓄電池。1. An electrode group formed by laminating a paste type nickel positive electrode plate containing at least Co powder and / or CoO powder as a conductive material and a negative electrode plate via a separator, and an alkaline electrolyte. An alkaline storage battery, characterized in that an alkaline electrolyte having a concentration of 35% or more is used.
粉末である請求項１記載のアルカリ蓄電池。2. The conductive material is Co powder or / and Co powder and Ni.
The alkaline storage battery according to claim 1, which is a powder.
の混合粉末である請求項１又は２記載のアルカリ蓄電
池。3. The alkaline storage battery according to claim 1, wherein the Ni powder is a mixed powder of a fine powder and a powder coarser than the fine powder.
る請求項１記載のアルカリ蓄電池。4. The alkaline storage battery according to claim 1, wherein the concentration of the electrolytic solution is in the range of 35 to 39 wt.%.
る請求項１又は４記載のアルカリ蓄電池。5. The alkaline storage battery according to claim 1, wherein the electrolytic solution comprises KOH, NaOH and LiOH.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357500A JP2530281B2 (en) | 1992-12-24 | 1992-12-24 | Alkaline storage battery |
| US08/095,257 US5395712A (en) | 1992-07-28 | 1993-07-22 | Paste-type nickel electrode for an alkaline storage battery and an alkaline storage battery containing the electrode |
| CA002101312A CA2101312C (en) | 1992-07-28 | 1993-07-26 | A paste type nickel electrode for an alkaline storage battery and an alkaline storage battery containing the electrode |
| EP93112093A EP0581275B1 (en) | 1992-07-28 | 1993-07-28 | A pasted type nickel electrode for an alkaline storage battery and an alkaline storage battery |
| DE69317173T DE69317173T2 (en) | 1992-07-28 | 1993-07-28 | Pasty nickel electrode for alkaline collector battery and alkaline collector battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357500A JP2530281B2 (en) | 1992-12-24 | 1992-12-24 | Alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06196163A true JPH06196163A (en) | 1994-07-15 |
| JP2530281B2 JP2530281B2 (en) | 1996-09-04 |
Family
ID=18454445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4357500A Expired - Fee Related JP2530281B2 (en) | 1992-07-28 | 1992-12-24 | Alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2530281B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012023049A (en) * | 1998-08-17 | 2012-02-02 | Ovonic Battery Co Inc | Composite positive electrode material and its manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5983347A (en) * | 1982-11-02 | 1984-05-14 | Matsushita Electric Ind Co Ltd | Sealed nickel-cadmium storage battery |
| JPS61104565A (en) * | 1984-10-25 | 1986-05-22 | Matsushita Electric Ind Co Ltd | Preparation of powdered active material for nickel positive electrode of cell |
| JPS61138458A (en) * | 1984-12-07 | 1986-06-25 | Yuasa Battery Co Ltd | Alkaline battery |
| JPS6332856A (en) * | 1986-07-25 | 1988-02-12 | Matsushita Electric Ind Co Ltd | Closed nickel-hydrogen storage battery |
| JPH0230061A (en) * | 1988-07-19 | 1990-01-31 | Yuasa Battery Co Ltd | Nickel electrode active material, and nickel electrode and alkaline battery using same |
| JPH02216763A (en) * | 1989-02-16 | 1990-08-29 | Yuasa Battery Co Ltd | Alkaline storage battery and manufacture thereof |
-
1992
- 1992-12-24 JP JP4357500A patent/JP2530281B2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5983347A (en) * | 1982-11-02 | 1984-05-14 | Matsushita Electric Ind Co Ltd | Sealed nickel-cadmium storage battery |
| JPS61104565A (en) * | 1984-10-25 | 1986-05-22 | Matsushita Electric Ind Co Ltd | Preparation of powdered active material for nickel positive electrode of cell |
| JPS61138458A (en) * | 1984-12-07 | 1986-06-25 | Yuasa Battery Co Ltd | Alkaline battery |
| JPS6332856A (en) * | 1986-07-25 | 1988-02-12 | Matsushita Electric Ind Co Ltd | Closed nickel-hydrogen storage battery |
| JPH0230061A (en) * | 1988-07-19 | 1990-01-31 | Yuasa Battery Co Ltd | Nickel electrode active material, and nickel electrode and alkaline battery using same |
| JPH02216763A (en) * | 1989-02-16 | 1990-08-29 | Yuasa Battery Co Ltd | Alkaline storage battery and manufacture thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012023049A (en) * | 1998-08-17 | 2012-02-02 | Ovonic Battery Co Inc | Composite positive electrode material and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2530281B2 (en) | 1996-09-04 |
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