JPH03145058A - Paste type nickel positive electrode - Google Patents
Paste type nickel positive electrodeInfo
- Publication number
- JPH03145058A JPH03145058A JP1281671A JP28167189A JPH03145058A JP H03145058 A JPH03145058 A JP H03145058A JP 1281671 A JP1281671 A JP 1281671A JP 28167189 A JP28167189 A JP 28167189A JP H03145058 A JPH03145058 A JP H03145058A
- Authority
- JP
- Japan
- Prior art keywords
- paste
- cobalt
- positive electrode
- nickel
- nickel positive
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 65
- 229910052759 nickel Inorganic materials 0.000 title claims description 31
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(II) oxide Inorganic materials [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910000428 cobalt oxide Inorganic materials 0.000 claims abstract description 22
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000011149 active material Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 9
- 238000007254 oxidation reaction Methods 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 8
- 229910052793 cadmium Inorganic materials 0.000 description 5
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 5
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 description 3
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 150000001869 cobalt compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- WJCRZORJJRCRAW-UHFFFAOYSA-N cadmium gold Chemical compound [Cd].[Au] WJCRZORJJRCRAW-UHFFFAOYSA-N 0.000 description 1
- -1 carbonyl methyl Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 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
- Secondary Cells (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、ペースト式ニッケル正極に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a paste-type nickel positive electrode.
［従来の技術及び課題］
従来、アルカリ蓄電池用ニッケル正極としては例えばカ
ルボニルニッケルを所定形状に底形、焼結して得られる
多孔質基板に、ニッケル塩の水溶液を含浸させ、つづい
てアルカリ溶液中で化学含浸して前記ニッケル塩を水酸
化ニッケルに転化せしめて製造する、いわゆる焼結式ニ
ッケル正極が知られている。[Prior Art and Problems] Conventionally, as a nickel positive electrode for an alkaline storage battery, a porous substrate obtained by shaping carbonyl nickel into a predetermined shape and sintering is impregnated with an aqueous solution of nickel salt, and then soaked in an alkaline solution. A so-called sintered nickel positive electrode is known, which is manufactured by chemically impregnating the nickel salt into nickel hydroxide.
一方、最近、電池の高容量化と低コスト化の要望から、
ペースト式ニッケル正極が開発されている。このペース
ト式ニッケル正極は、水酸化ニッケル粉末と水を適当な
結着剤によりペースト化し、各種の導電性基板に塗着、
充填した後、ブレス底形するすることにより得られ、前
述した焼結式ニッケル正極に比べて活物質の占める量が
多いために高容量化が可能となる。また、焼結式ニッケ
ル正也のように含浸工程や化成工程の複雑な工程を必要
としないため、量産化及び低コスト化が可能となる。On the other hand, due to the recent demand for higher capacity and lower cost batteries,
A paste-type nickel positive electrode has been developed. This paste-type nickel positive electrode is made by making a paste of nickel hydroxide powder and water using an appropriate binder, and applying it to various conductive substrates.
After being filled, it is obtained by shaping the bottom of the press, and since the active material occupies a larger amount than the aforementioned sintered nickel positive electrode, it is possible to increase the capacity. In addition, unlike sintered nickel Masaya, it does not require complicated processes such as impregnation and chemical conversion, making mass production and cost reduction possible.
上述したペースト式ニッケル正極の製造においては、利
用率や充放電性能を向上させるためにコバルト化合物を
添加することが行われている。代表的なコバルト化合物
としては、金属コバルト、酸化コバルト、水酸化コバル
トが挙げられ、なかでも−酸化コバルトは非常に高い活
性を有し、少量の添加でニッケル正極の導電性や利用率
の向上に多大な効果を発揮できる。In manufacturing the paste-type nickel positive electrode described above, a cobalt compound is added in order to improve the utilization rate and charge/discharge performance. Typical cobalt compounds include metallic cobalt, cobalt oxide, and cobalt hydroxide. Among them, cobalt oxide has extremely high activity, and adding a small amount can improve the conductivity and utilization rate of nickel positive electrodes. It can be very effective.
しかしながら、−酸化コバルトは空気中の酸素と容易に
反応し、−酸化コバルト分子の奥深くまで酸化して本来
持つ効果を発揮できなくなる。また、急激に一酸化コバ
ルトの酸化反応が進行すると、−酸化コバルトが発火す
る等の危険性があるため、窒素やアルゴン等の不活性雰
囲気中でペースト式ニッケル正極を作製する必要があり
、量産性の点で問題があった。However, -cobalt oxide easily reacts with oxygen in the air, and -cobalt oxide molecules are oxidized deep into the cobalt oxide molecules, making them unable to exhibit their original effects. Additionally, if the oxidation reaction of cobalt monoxide progresses rapidly, there is a risk that the cobalt oxide may catch fire, so paste-type nickel positive electrodes must be manufactured in an inert atmosphere such as nitrogen or argon, and mass production is required. There was a problem with sexuality.
（発明が解決しようとする課題）
本発明は、上記従来の課題を解決するためになされたも
ので、酸素を含む雰囲気中での急激な酸化反応を坐じず
、良好な活性を有する一酸化コバルトが添加されたペー
ストを備えたペースト式ニッケル正極を堤供しようとす
るものである。(Problems to be Solved by the Invention) The present invention has been made in order to solve the above-mentioned conventional problems. It is intended to provide a paste-type nickel positive electrode with a paste doped with cobalt.
［発明の構成］
（課題を解決するための手段）
本発明は、導電性基板に水酸化ニッケルを生活物質とし
、表面が高次コバルト酸化物層で覆われた一酸化コバル
トを含む組成のペーストを充填したことを特徴とするペ
ースト式ニッケル正極である。[Structure of the Invention] (Means for Solving the Problems) The present invention provides a paste having a composition containing cobalt monoxide, the surface of which is covered with a layer of higher-order cobalt oxide, using nickel hydroxide as a living material on a conductive substrate. This is a paste-type nickel positive electrode characterized by being filled with.
上記導電性基板としては、例えばパンチトメタル、ラス
メタル等の二次元構造のもの、発泡メタル、ニッケル焼
結繊維基板、金属メツキ繊維基板等の三次元構造のもの
を挙げることができる。Examples of the conductive substrate include those with a two-dimensional structure such as punched metal and lath metal, and those with a three-dimensional structure such as foamed metal, nickel sintered fiber substrates, and metal-plated fiber substrates.
上記ペーストに用いられる一酸化コバルトの表面を覆う
高次コバルト酸化物としては、例えばＣｏ ２０３ 、
Ｃｏ ｓ Ｏａ等を挙げることができる。Examples of higher-order cobalt oxides that cover the surface of cobalt monoxide used in the paste include Co 203 ,
Examples include CosOa and the like.
かかる高次コバルト酸化物層を形成する方法としては、
例えば不活性雰囲気中で焼成してＣｏｏを形成後表面の
みを酸化する方法や造粒する方法等を採用し得る。また
、高次コバルト酸化物層の量は一酸化コバルトに対して
０．１〜２０重量％とすることが望ましい。この理由は
、０．１１１ｎｆｆｉ％未満にすると酸化反応の抑制化
を十分に遠戚できず、−方２０ｆｆｉ ｆｆｉ％を越え
ると活性低下を招く恐れがある。The method for forming such a high-order cobalt oxide layer is as follows:
For example, a method of oxidizing only the surface after forming Coo by firing in an inert atmosphere, a method of granulating, etc. may be adopted. Further, the amount of the higher-order cobalt oxide layer is preferably 0.1 to 20% by weight based on cobalt monoxide. The reason for this is that if the content is less than 0.111nffi%, the oxidation reaction cannot be suppressed sufficiently, and if it exceeds 20nffi%, there is a risk of a decrease in activity.
上記ペーストは、水酸化ニッケル、表面が高次コバルト
酸化物層で覆われた一酸化コバルトの他に、カルボニル
ニッケルなどの導電材、カルボニルメチルセルロース（
ＣＭＣ）などの結着剤の組成から構成される。The above paste contains nickel hydroxide, cobalt monoxide whose surface is covered with a layer of higher cobalt oxide, conductive materials such as carbonyl nickel, carbonyl methyl cellulose (
It is composed of a binder such as CMC).
（作用）
本発明によれば、ペースト中に配合される一酸化コバル
トとして表面が高次コバルト酸化物層で覆われたものを
使用することによって、空気中に放置しても酸化反応は
徐々にしか進行しないため、急激な酸化反応の進行に伴
う爆発の危険性を回避でき、−酸化コバルト本来の効果
を持続できる。また、高次酸化物以外の酸化物を生成す
ることが少なくなるため、特殊な雰囲気下で電極を作製
する必要がなく、通常の大気下で電極を作製することが
可能となる。更に、−酸化コバルトの貯蔵特性を向上で
きるため、特性が安定した電極を作製することができる
。(Function) According to the present invention, by using a cobalt monoxide compounded in the paste whose surface is covered with a layer of higher-order cobalt oxide, the oxidation reaction will gradually occur even if left in the air. Since the oxidation reaction only progresses, the danger of explosion due to the rapid progress of the oxidation reaction can be avoided, and the original effects of cobalt oxide can be maintained. Furthermore, since oxides other than higher-order oxides are less likely to be produced, it is not necessary to produce electrodes under a special atmosphere, and it becomes possible to produce electrodes under normal atmosphere. Furthermore, since the storage characteristics of -cobalt oxide can be improved, an electrode with stable characteristics can be produced.
（実施例） 以下、本発明の実施例を詳細に説明する。(Example) Examples of the present invention will be described in detail below.
実施例１
まず、水酸化ニッケル８５重量部表面に１０重量％のＣ
ｏ１１４の高次酸化物で覆われた一酸化コパルＩ−ＬＯ
ｆｆｉｍ部、導電材としてカルボニルニッケル５重量部
をＣＭＣと共にドライ混合を行った後、純水を加えて混
練してペーストを調製した。つづいて、このペーストを
ニッケル焼結繊維基板に充填し、乾燥、プレスを行って
所定形状のペースト式ニッケル正極を作製した。次いで
、このペースト式ニッケル正極をセパレータを介してカ
ドミウム負極と共に捲回して電極群を作製した後、７規
定のＫＯＨの電解液を定量注液し、外装缶に収納、密閉
してＡＡサイズのニッケル・カドミウム蓄電池を組み立
てた。Example 1 First, 85 parts by weight of nickel hydroxide was coated with 10% by weight of C.
Copal monoxide I-LO covered with higher oxide of o114
After dry mixing ffim part and 5 parts by weight of carbonyl nickel as a conductive material with CMC, pure water was added and kneaded to prepare a paste. Subsequently, this paste was filled into a nickel sintered fiber substrate, dried, and pressed to produce a paste-type nickel positive electrode of a predetermined shape. Next, this paste-type nickel positive electrode was wound together with a cadmium negative electrode through a separator to create an electrode group, and then a fixed amount of 7-N KOH electrolyte was injected into the can, which was then stored in an outer can and sealed to form an AA-sized nickel electrode.・Assembled a cadmium storage battery.
比較例１
表面に高次酸化物で被覆された一酸化コバルトの代わり
にＣｏ、Ｏ，を用いた以外、実施例１と同様なペースト
式ニッケル正極を作製し、これを用いてＡＡサイズのニ
ッケル金カドミウム蓄電池を組み立てた。Comparative Example 1 A paste-type nickel positive electrode similar to that of Example 1 was produced except that Co, O, was used instead of cobalt monoxide whose surface was coated with a higher order oxide, and this was used to make an AA size nickel positive electrode. Assembled gold cadmium storage battery.
比較例２
表面に高次酸化物で被覆された一酸化コバルトの代わり
に活性な酸化コバルトを用いた以外、実施例１と同様な
ペースト式ニッケル正極を作製し、これを用いてＡＡサ
イズのニッケル・カドミウム蓄電池を組み立てた。比較
例３
表面に高次酸化物で被覆された一酸化コバルトの代わり
に水酸化コバルトを用いた以外、実施例１と同様なペー
スト式ニッケル正極を作製し、これを用いてＡＡサイズ
のニッケル・カドミウム蓄電池を組み立てた。Comparative Example 2 A paste-type nickel positive electrode similar to that of Example 1 was produced except that active cobalt oxide was used instead of cobalt monoxide whose surface was coated with a higher order oxide, and this was used to make an AA-sized nickel electrode.・Assembled a cadmium storage battery. Comparative Example 3 A paste-type nickel positive electrode similar to that of Example 1 was produced except that cobalt hydroxide was used instead of cobalt monoxide whose surface was coated with a higher order oxide, and this was used to make an AA-sized nickel electrode. Assembled a cadmium storage battery.
褥られた実施例１及び比較例１〜３の蓄電池について、
電解液が十分に浸透するに必要な時間として２４時間室
温で放置し、ニッケル正極の理論容量に対して０．２Ｃ
ｍ Ａで１５０％の充電を行い、０．２Ｃｍ Ａで完全
放電を行うサイクルを１０回行った後の利用率を測定し
た。その結果を第１図に示した。Regarding the lying storage batteries of Example 1 and Comparative Examples 1 to 3,
It was left at room temperature for 24 hours to allow the electrolyte to fully penetrate, and the temperature was 0.2C relative to the theoretical capacity of the nickel positive electrode.
The utilization rate was measured after performing 10 cycles of charging to 150% at mA and completely discharging at 0.2CmA. The results are shown in Figure 1.
第１図から明らかなように、表面が高次酸化物で覆われ
た一酸化コバルトを配合したペーストから作製したペー
スト式ニッケル正極を備えた本実施例１の蓄電池は、利
用率が９５％であるのに対し、該−酸化コバルトの代わ
りにＣｏ３０．、活性な酸化コバルト、水酸化コバルト
配合し５たペーストから作製したペースト式ニッケル正
極を備えた比較例１〜３の蓄電池はそれぞれ６０％、７
０％、４０％と極めて低利用率になることがわかる。特
に、活性な一酸化コバルトを添加したペースト式ニッケ
ル正極を備えた比較例２の蓄電池の利用率が７０％と低
くなるのは、前記−酸化コバルトが急激に空気中の酸素
と反応して一酸化コバルト分子の奥深くまで酸化し、−
酸化コバルト本来の作用を発揮できなかったためである
と考えられる。As is clear from FIG. 1, the storage battery of Example 1, which was equipped with a paste-type nickel positive electrode made from a paste containing cobalt monoxide whose surface was covered with a higher-order oxide, had a utilization rate of 95%. However, instead of the cobalt oxide, Co30. The storage batteries of Comparative Examples 1 to 3, each having a paste-type nickel positive electrode made from a paste containing active cobalt oxide and cobalt hydroxide, had a concentration of 60% and 7%, respectively.
It can be seen that the usage rate is extremely low at 0% and 40%. In particular, the reason why the utilization rate of the storage battery of Comparative Example 2, which is equipped with a paste-type nickel positive electrode to which active cobalt monoxide is added, is as low as 70% is because the cobalt oxide rapidly reacts with oxygen in the air. Oxidizes deep into cobalt oxide molecules, −
This is thought to be because cobalt oxide was unable to exert its original effect.
実施例２
表面にＣＯ３Ｏ４の高次酸化物が０．１重量％、１０重
量％、２０玉量％及び４０重量％覆われた一酸化コバル
トを用いた以外、実施例１と同様な４８のペースト式ニ
ッケル正極を作製し、これら正極を用いてＡＡサイズの
ニッケル・カドミウム蓄電池を組み立てた。Example 2 48 pastes similar to Example 1 except that cobalt monoxide whose surface was covered with 0.1%, 10%, 20% and 40% by weight of a higher oxide of CO3O4 was used. nickel-cadmium storage batteries of AA size were assembled using these positive electrodes.
得られた実施例２における ４種の蓄電池について、電
解液が十分に浸透するに必要な時間として２４時間室温
では放置し、ニッケル正極の理論容量に対して０．２Ｃ
ｍ Ａで１５０％の充電を行い、０．２ＣｍＡで完全放
電を行うサイクルを１ｏ回行った後の利用率を測定した
。その結果を第２図に示した。The four types of storage batteries obtained in Example 2 were left at room temperature for 24 hours, which is the time required for the electrolyte to fully penetrate, and the battery was heated to a temperature of 0.2C relative to the theoretical capacity of the nickel positive electrode.
The utilization rate was measured after 10 cycles of 150% charging at mA and complete discharging at 0.2 CmA. The results are shown in Figure 2.
第２図から明らかなように表面にＣＯ３Ｏ４の高次酸化
物が２０重量％を越えた量覆われた一酸化コバルトを含
むペーストからなる正極を用いた蓄電池では利用率が徐
々に低下することから、高次酸化物の表面波ｆｆ１ｍは
２０重皿％を上限とすることが利用率の観点から望まし
いことがわかる。As is clear from Figure 2, in a storage battery using a positive electrode made of a paste containing cobalt monoxide whose surface is covered with more than 20% by weight of higher-order oxides of CO3O4, the utilization rate gradually decreases. , it can be seen that it is desirable from the viewpoint of the utilization rate that the upper limit of the surface wave ff1m of the higher order oxide is 20%.
なお、上記実施例では負極としてカドミウム電極を用い
たニッケル・カドミウム蓄電池について説明したが、水
素吸蔵合金電極を負極とするニッケル・水素蓄電池にも
同様に適用できる。In the above embodiments, a nickel-cadmium storage battery using a cadmium electrode as the negative electrode was described, but the present invention can be similarly applied to a nickel-hydrogen storage battery using a hydrogen storage alloy electrode as the negative electrode.
［発明の効果コ
以上詳述した如く、本発明によれば酸素を含む雰囲気中
での急激な酸化反応を生じず、良好な活性を有する一酸
化コバルトが添加されたペーストを備え、蓄電池こして
組み込んだ場合の利用率の向上化を達成し得るペースト
式ニッケル正極を撮供できる。[Effects of the Invention] As detailed above, according to the present invention, a paste containing cobalt monoxide which does not cause rapid oxidation reaction in an oxygen-containing atmosphere and has good activity, A paste-type nickel positive electrode that can improve the utilization rate when incorporated can be provided.
第１図は本実施例１及び比較例１〜３のニッケル・カド
ミウム蓄電池における所定回数の充放電サイクル後の利
用率を示す特性図、第２図は高次酸化物被覆量の異なる
一酸化コバルトを含むペーストからなる正極を用いた蓄
電池における利用率示す特性図である。Fig. 1 is a characteristic diagram showing the utilization rate after a predetermined number of charge/discharge cycles for the nickel-cadmium storage batteries of Example 1 and Comparative Examples 1 to 3, and Fig. 2 is a characteristic diagram showing the utilization rate after a predetermined number of charge/discharge cycles for the nickel-cadmium storage batteries of Example 1 and Comparative Examples 1 to 3. It is a characteristic diagram showing the utilization rate in a storage battery using a positive electrode made of a paste containing.
Claims (1)
次コバルト酸化物層で覆われた一酸化コバルトを含む組
成のペーストを充填したことを特徴とするペースト式ニ
ッケル正極。A paste-type nickel positive electrode characterized in that a conductive substrate is filled with a paste having a composition containing cobalt monoxide, the main active material of which is nickel hydroxide, and the surface of which is covered with a high-order cobalt oxide layer.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281671A JP2930331B2 (en) | 1989-10-31 | 1989-10-31 | Paste nickel positive electrode and alkaline storage battery |
| DE69014183T DE69014183T2 (en) | 1989-09-18 | 1990-09-18 | Nickel-metal hydride secondary cell. |
| EP90310213A EP0419220B1 (en) | 1989-09-18 | 1990-09-18 | Nickel-metal hydride secondary cell |
| US07/584,115 US5032475A (en) | 1989-09-18 | 1990-09-18 | Nickel-metal hydride secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1281671A JP2930331B2 (en) | 1989-10-31 | 1989-10-31 | Paste nickel positive electrode and alkaline storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03145058A true JPH03145058A (en) | 1991-06-20 |
| JP2930331B2 JP2930331B2 (en) | 1999-08-03 |
Family
ID=17642357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1281671A Expired - Fee Related JP2930331B2 (en) | 1989-09-18 | 1989-10-31 | Paste nickel positive electrode and alkaline storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2930331B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721229A1 (en) | 1994-12-19 | 1996-07-10 | Matsushita Electric Industrial Co., Ltd. | Alkaline storage battery and method of producing Ni/Co hydroxide active mass for positive electrode |
| EP0853346A1 (en) * | 1997-01-10 | 1998-07-15 | Matsushita Electric Industrial Co., Ltd. | Nickel positive electrode for alkaline storage batteries and method for producing the same |
| WO2024053979A1 (en) * | 2022-09-05 | 2024-03-14 | 주식회사 엘지에너지솔루션 | Secondary battery |
-
1989
- 1989-10-31 JP JP1281671A patent/JP2930331B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721229A1 (en) | 1994-12-19 | 1996-07-10 | Matsushita Electric Industrial Co., Ltd. | Alkaline storage battery and method of producing Ni/Co hydroxide active mass for positive electrode |
| US5759718A (en) * | 1994-12-19 | 1998-06-02 | Matsushita Electric Industrial Co., Ltd. | Alkaline storage battery and method for making same |
| EP0853346A1 (en) * | 1997-01-10 | 1998-07-15 | Matsushita Electric Industrial Co., Ltd. | Nickel positive electrode for alkaline storage batteries and method for producing the same |
| US6287726B1 (en) | 1997-01-10 | 2001-09-11 | Matsushita Electric Industrial Co., L.T.D. | Method for producing nickel positive electrode for alkaline storage batteries |
| US6562516B2 (en) | 1997-01-10 | 2003-05-13 | Matsushita Electric Industrial Co., Ltd. | Nickel positive electrode for alkaline storage batteries |
| WO2024053979A1 (en) * | 2022-09-05 | 2024-03-14 | 주식회사 엘지에너지솔루션 | Secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2930331B2 (en) | 1999-08-03 |
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