JPH01132066A - Sealed nickel-hydrogen storage battery using hydrogen absorbing alloy - Google Patents
Sealed nickel-hydrogen storage battery using hydrogen absorbing alloyInfo
- Publication number
- JPH01132066A JPH01132066A JP62290019A JP29001987A JPH01132066A JP H01132066 A JPH01132066 A JP H01132066A JP 62290019 A JP62290019 A JP 62290019A JP 29001987 A JP29001987 A JP 29001987A JP H01132066 A JPH01132066 A JP H01132066A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- battery
- storage battery
- hydrogen storage
- nickel
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 30
- 239000000956 alloy Substances 0.000 title claims abstract description 30
- 239000001257 hydrogen Substances 0.000 title claims abstract description 27
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims description 22
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 10
- 239000010941 cobalt Substances 0.000 claims abstract description 10
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910000428 cobalt oxide Inorganic materials 0.000 claims abstract description 6
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 29
- 229910052759 nickel Inorganic materials 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 229910052987 metal hydride Inorganic materials 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000010325 electrochemical charging Methods 0.000 claims description 2
- 238000010326 electrochemical discharging Methods 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 claims description 2
- 238000010248 power generation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 238000007600 charging Methods 0.000 description 9
- 229910052793 cadmium Inorganic materials 0.000 description 6
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007773 negative electrode material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910021508 nickel(II) hydroxide Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical class [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- 229910005580 NiCd Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 244000000231 Sesamum indicum Species 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- -1 cobalt carbonyl compound Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012229 microporous material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/383—Hydrogen absorbing alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/34—Gastight accumulators
- H01M10/345—Gastight metal hydride accumulators
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
-
- 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)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、負極に一水素吸蔵合金を用いたニッケル・水
素蓄電池の構成の改良に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in the structure of a nickel-hydrogen storage battery using a monohydrogen storage alloy for the negative electrode.
従来の技術
高密度に水素を吸蔵・放出する水素吸蔵合金を負極材料
に用いるニッケル・水素蓄電池は密閉化が可能で、円筒
密閉形ニッケル・カドミウム蓄電池（以後二カド電池と
称する）をはるかに凌ぐ高エネルギー密度電池として期
待されている。しかし、このニッケル・水素蓄電池は、
現在まだ開発段階であシミ池の構成方法に基準となるも
のが乏しい。このため、従来０ニカド電池の構成方法を
参考にする場合が多い。電池構成時におけるニカド電池
は、通常以下の状態の正・負極をセパレータを介して渦
巻状に構成し、電解液とともに円筒状の缶に挿入し密閉
される。Conventional technology Nickel-hydrogen storage batteries, which use a hydrogen storage alloy that stores and releases hydrogen at high density as the negative electrode material, can be sealed and are far superior to sealed cylindrical nickel-cadmium storage batteries (hereinafter referred to as 2-cadmium batteries). It is expected to be used as a high energy density battery. However, this nickel-metal hydride storage battery
Currently, it is still in the development stage and there are few standards for how to configure Shimi Pond. For this reason, the construction method of a conventional 0 NiCd battery is often referred to. In a nickel-cadmium battery, positive and negative electrodes in a sub-normal state are spirally formed with a separator in between, and the battery is inserted into a cylindrical can together with an electrolyte and sealed.
（１） 焼結式ニッケル正極の場合は、ニッケルの焼
結基板内部に活物質であるＮ１（ＯＩ（）２を充填し、
アルカリ水溶液中で電気化学的に充放電を施したのち水
洗・乾燥を経過した放電状態である。(1) In the case of a sintered nickel positive electrode, the active material N1(OI()2) is filled inside the nickel sintered substrate,
This is the discharged state after electrochemical charging and discharging in an alkaline aqueous solution, followed by washing and drying.
非焼結式ニッケル正極の場合はＮ ｌ （ＯＨ） ２を
塗着または充填した放電状態である。In the case of a non-sintered nickel positive electrode, it is in a discharge state where Nl(OH)2 is applied or filled.
（巧 カドミウム負極の場合は、焼結式および非焼結式
のいずれもが、アルカリ水溶液中で電気化学的に部分充
電を施したのち水洗・乾燥を経過した未放電状態である
。(Takumi Cadmium negative electrodes, both sintered and non-sintered, are in an undischarged state after being electrochemically partially charged in an alkaline aqueous solution, then washed and dried.
この理由は、一般にカドミウム負極はニッケル正極に比
べて、高率放電特性に劣るためあらかじめ負極側に放電
可能容量を前記した方法で設け、正極容量によって電池
容量を規制するためである。これによって、負極が、電
池の放電後においても完全放電状態あるいは過放電状態
になることが防止でき、負極活物質の溶出に起因するサ
イクル寿命の劣化が抑制される。The reason for this is that cadmium negative electrodes generally have inferior high-rate discharge characteristics compared to nickel positive electrodes, so a dischargeable capacity is provided in advance on the negative electrode side by the method described above, and the battery capacity is regulated by the positive electrode capacity. This prevents the negative electrode from entering a fully discharged state or an overdischarged state even after the battery is discharged, and deterioration of cycle life due to elution of the negative electrode active material is suppressed.
ニッケル・水素蓄電池では、ニッケル正極を用いる点は
、ニカド電池と同様であるが、負極活物質に水素を吸蔵
・放出する水素吸蔵合金を使用する（以後、合金負極と
略称する）。一般に、合金負極はカドミウム負極と同様
に、ニッケル正極と比べて高率放電特性に劣るためこの
場合も前記（１）（２）の状態で電池を構成する必要が
ある。そこで合金負極を部分充電状態にするため、以下
の方法が提案されている。Nickel-hydrogen storage batteries use a nickel positive electrode, similar to nickel-cadmium batteries, but use a hydrogen storage alloy that absorbs and releases hydrogen in the negative electrode active material (hereinafter abbreviated as alloy negative electrode). In general, alloy negative electrodes, like cadmium negative electrodes, are inferior to nickel positive electrodes in high rate discharge characteristics, so in this case as well, it is necessary to construct a battery under the conditions (1) and (2) above. Therefore, the following method has been proposed to bring the alloy negative electrode into a partially charged state.
■ カドミウム負極と同様ブルカ、り溶液中で部分充電
を施す。■ As with the cadmium negative electrode, partial charging is performed in a burqa solution.
■ 水素ガスの吸蔵放出操作により合金を粉砕するとと
もに一部の水素を残しておき、この状態の合金粉末を用
いて負極を構成する（水素の吸蔵は充電に相当する）。■ The alloy is pulverized by a hydrogen gas storage/release operation, and some hydrogen is left behind, and the alloy powder in this state is used to form a negative electrode (hydrogen storage corresponds to charging).
発明が解決しようとする問題点
前記■■の方法は、従来のカドミウム負極の化成操作に
あたる煩雑な水素吸蔵操作を必要とする。Problems to be Solved by the Invention The above-mentioned method (1) requires a complicated hydrogen storage operation that corresponds to the conventional chemical formation operation of a cadmium negative electrode.
また■■の方法では、電池構成前に大気に触れ水素を吸
蔵した活性な合金が燃焼する危険性がちシ、仮に燃えな
くても大気中に水素が飛散し、所望の水素吸蔵量が得ら
・れにくい。In addition, with method ■■, there is a risk that the active alloy that is exposed to the atmosphere and has absorbed hydrogen before battery construction will burn, and even if it does not burn, hydrogen will scatter into the atmosphere, making it impossible to obtain the desired amount of hydrogen storage.・Not easy to break.
本発明は上記のような問題点を解消し、簡単な製法によ
る正極と負極を用いて、正極容量によシ容量が規制され
る長寿命の密閉形ニッケル・水素蓄電池を提供すること
を目的とする。The purpose of the present invention is to solve the above-mentioned problems and provide a long-life sealed nickel-metal hydride storage battery whose capacity is regulated by the capacity of the positive electrode, using positive and negative electrodes manufactured using a simple manufacturing method. do.
問題点を解決するための手段
この問題点を解決するため本発明は、正極中に電気化学
的に充電され充電後は放電しない適量のコバ／ｌ／）お
よび／またはコバルト酸化物を予め加えた無化成の正極
と、水素吸蔵合金を支持体に充填あるいは塗着しただけ
の合金負極とを組み合わせて電池を構成したものである
。Means for Solving the Problem In order to solve this problem, the present invention pre-adds an appropriate amount of cobalt oxide (cobalt/l/) and/or cobalt oxide which is electrochemically charged and does not discharge after charging into the positive electrode. A battery is constructed by combining a chemical-free positive electrode and an alloy negative electrode in which a support is simply filled with or coated with a hydrogen storage alloy.
作 用
この構成によれば、電池の初充電でニッケル正極では活
物質であるＮｉ（ＯＨ）２の他にコバ／ｌ／）および／
または２価のコバ／ｌ／ｌ−酸化物（例えばＣｏ （Ｏ
Ｈ） ２ ）が充電され、一方合金負極ではこれら両者
の充電電気量の合計が充電される。しかし、コバルトお
よび／または２価のコバルト酸化物は３価のｃｏ２０３
等の高次酸化物になると放電されず、正極の放電は活物
質だけが働く。したがって、電池の完全放電後には合金
負極にまだ放電余力を有する結果、電池容量は正極容量
で規制され電池の長寿命化がはかれることとなる。Effect: According to this configuration, in the first charge of the battery, in addition to the active material Ni(OH)2, the nickel positive electrode contains
or divalent Co/l/l-oxides (e.g. Co (O
H) 2) is charged, while the alloy negative electrode is charged with the total amount of charge of both of them. However, cobalt and/or divalent cobalt oxide is trivalent co203
When it becomes a higher order oxide such as, no discharge occurs, and only the active material works to discharge the positive electrode. Therefore, after the battery is completely discharged, the alloy negative electrode still has discharge capacity, and as a result, the battery capacity is regulated by the positive electrode capacity, and the life of the battery can be extended.
実施例
以下本発明の実施例を第１図と第２図を参照して説明す
る。Embodiments Below, embodiments of the present invention will be described with reference to FIGS. 1 and 2.
Ｎｉ（ＯＨ）２粉末１００重量部に対し平均粒径６μｍ
のコバルトカルボニル
物を水で混練し多孔度約９６％、厚さ１．５鴫のスポン
ジ状ニッケル多孔体中に充填する。これを１００℃で乾
燥後、加圧して平均厚さ７．８ ｍｍとしたのち幅３９
間、長さ６０ｍｍの寸法に切断し、理論容量１０７０ｍ
Ａｈのニッケル正極１を得る。Average particle size 6 μm for 100 parts by weight of Ni(OH)2 powder
The cobalt carbonyl compound was kneaded with water and filled into a sponge-like porous nickel material having a porosity of about 96% and a thickness of 1.5 mm. After drying this at 100℃, it was pressurized to an average thickness of 7.8 mm, and then a width of 39 mm.
Cut to a length of 60mm, theoretical capacity 1070m
A nickel positive electrode 1 of Ah is obtained.
ＭｒｎＮ ｌ ３． ｓ ｓＭｎ ｏ 、 ４Ａ Ｊ
ｏ 、 ｓ Ｃ Ｏ ｏ 、 ７ｓとなるように溶解し
合金化された水素吸蔵合金を機械的に粉砕し、平均粒径
２ｏ：μｍの合金粉末を得る。MrnN l 3. s sMno , 4A J
The hydrogen-absorbing alloy melted and alloyed to give 0, s C O o , 7s is mechanically pulverized to obtain an alloy powder with an average particle size of 2o:μm.
この粉末をポリビニルアルコ−）ｖ １，ｓ ｗｔ％水
溶液でペースト状にし、厚さ０．９ｍｍにした前記スポ
ンジ状ニッケル多孔体内に充填し、１００℃で乾燥後加
圧して平均厚さ０．５ｍｍの極板にする。ついで幅３９
Ｍ、長さ８０ｒｒａｎに切断し、理論容量１７００ｍＡ
ｈの合金負極板を得る。ここで理論容量の算出には２３
０ｍＡｈ／合金１グラムを採用した。This powder was made into a paste form with a polyvinyl alcohol) v 1,s wt% aqueous solution, filled into the sponge-like porous nickel body made to a thickness of 0.9 mm, dried at 100°C, and then pressurized to give an average thickness of 0.5 mm. Make it into a pole plate. Then the width is 39
M, cut to length 80rran, theoretical capacity 1700mA
Obtain an alloy negative electrode plate of h. Here, to calculate the theoretical capacity, 23
0mAh/1 gram of alloy was adopted.
このようにして得られた正・負極を汎用のポリアミド系
不織布のセパレータ３を介し、渦巻状に捲回してＡＡサ
イズのケース４に挿入し、ついで６．３ＮのＫＯＨ水溶
液を２．２−加えたのち絶縁リング５を介して正極端子
６を取付けた封口板７で封口した。第１図にこの電池の
概略図を示す。The positive and negative electrodes obtained in this way were wound spirally through a general-purpose polyamide nonwoven fabric separator 3 and inserted into an AA size case 4, and then a 6.3N KOH aqueous solution was added to the case 4. Thereafter, it was sealed with a sealing plate 7 to which a positive electrode terminal 6 was attached via an insulating ring 5. FIG. 1 shows a schematic diagram of this battery.
なお、２で示した負極はケース４に直接接触するのでケ
ース４は負極端子を兼ねる。Incidentally, since the negative electrode indicated by 2 is in direct contact with the case 4, the case 4 also serves as a negative electrode terminal.
第２図のａに、この電池を２０’Ｃの雰囲気中で２００
ｍＡで７．５時間充電後ｓ ｏ ｏ ｍ Ａで放電し
たときの充放電サイクル数と放電容量の関係、すなわち
サイクル寿命試験の結果を示す。比較例として、合金負
極を予め約４ｏｏｍＡｈの部分充電を施した前記合金負
極とＣＯ粉末を含まない汎用の正極とを組み合せた電池
および部分充電を全く施さない合金負極と前記汎用の正
極とを組み合せた電池の同様なサイクル寿命試験結果を
それぞれｂおよびＣで示す。この結果、ｂの電池の合金
負極には放電後、若干の水素が吸蔵されているためＣよ
り寿命が改善されているが、本発明によるｄの電池は、
はぼコバルトの充電電気量（この場合は約４００ ｍＡ
ｈに相当する）相当の水素が放電後の合金負極中に存在
するため優れたサイクル寿命を示したものと考えられる
。なお、正極中のコバルト量を減少させ、約３００ ｍ
Ａｈの充電電気量にすると、サイクル寿命が低下する傾
向が認められた。この結果および高価なコバルトの使用
を考慮すると、１０００ ｍＡｈの正極容量の場合３０
０〜４５０ ｍＡｈの充電電気量、すなわちＮｉ（ＯＨ
）２１００重量部に対し６〜９重量部のコバ／Ｌ／）粉
末の添加が適切である。In Figure 2 a, this battery was heated at 200°C in an atmosphere of 20'C
The relationship between the number of charge/discharge cycles and the discharge capacity when charging at mA for 7.5 hours and discharging at somA, that is, the results of a cycle life test, is shown. As a comparative example, a battery was prepared in which the alloy negative electrode was partially charged in advance to approximately 4 oomAh and a general-purpose positive electrode containing no CO powder was combined, and an alloy negative electrode that was not partially charged at all was combined with the general-purpose positive electrode. Similar cycle life test results for the same batteries are shown in b and c, respectively. As a result, since the alloy negative electrode of battery b has some hydrogen occluded after discharge, its lifespan is improved compared to battery C, but battery d according to the present invention has a
Habo cobalt charging electricity amount (in this case approximately 400 mA
It is thought that the excellent cycle life was exhibited because a considerable amount of hydrogen (corresponding to h) was present in the alloy negative electrode after discharge. In addition, by reducing the amount of cobalt in the positive electrode,
It was observed that when the charging electricity amount was set to Ah, the cycle life tended to decrease. Considering this result and the use of expensive cobalt, for a cathode capacity of 1000 mAh, 30
The amount of charging electricity from 0 to 450 mAh, that is, Ni(OH
) 6 to 9 parts by weight of Koba/L/) powder is suitable for 2100 parts by weight.
またコバルト粉末の一部を２価のコバ／Ｌ／ ）酸化物
で置き換えても３００〜４５０ ｍＡｈの充電電気量が
得られる限シ、同様な効果が認められた。Furthermore, even if part of the cobalt powder was replaced with divalent cobalt/L/ ) oxide, a similar effect was observed as long as a charging electricity amount of 300 to 450 mAh could be obtained.
なお、水素吸蔵合金粉末を発泡状ニッケμ多孔体中に充
填するのではなく、汎用の焼結式ニッケル正極に使用さ
れる焼結基板のように芯材に塗着して焼結電極にした場
合は、高率放電特性が若干向上する。この場合は、正極
の放電量に対する合金負極の放電量差が縮まるため、正
極中に加えるコバ／ｌ／ｌ−量を若干減少させることが
可能である。In addition, instead of filling the hydrogen-absorbing alloy powder into a foamed nickel microporous material, we applied it to a core material to create a sintered electrode, similar to the sintered substrate used in general-purpose sintered nickel positive electrodes. In this case, the high rate discharge characteristics are slightly improved. In this case, since the difference in the discharge amount of the alloy negative electrode with respect to the discharge amount of the positive electrode is reduced, it is possible to slightly reduce the amount of edges/l/l− added to the positive electrode.
発明の効果
本発明による密閉形二７ケ〜・水素蓄電池は、電池構成
前の正・負極とも化成（充放電あるいは水素の吸蔵・放
出）等の工程を必要としない簡単な製法が採用でき、サ
イクル寿命にも優れるという効果が与えられる。Effects of the Invention The sealed 27-cell hydrogen storage battery according to the present invention can be manufactured using a simple manufacturing method that does not require processes such as chemical formation (charging and discharging or hydrogen storage and release) for both the positive and negative electrodes before battery construction. It also has the effect of having an excellent cycle life.
第１図は本発明の実施例に示した密閉形ニッケル・水素
蓄電池の構成図、第２図は２０℃雰囲気における密閉形
ニッケル・水素蓄電池の充放電サイクル寿命試験の結果
を示す図である。
１・・・・・・正極、２・・・・・・負極、３・・・・
・・セパレータ、４・・・・・・ケース。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名Ｉ−
正 極
２− 負 極
３−でパレータ
Φ−ケース
５−絶縁ソング
第１図FIG. 1 is a block diagram of a sealed nickel-metal hydride storage battery shown in an embodiment of the present invention, and FIG. 2 is a diagram showing the results of a charge-discharge cycle life test of the sealed nickel-metal hydride battery in an atmosphere of 20°C. 1...Positive electrode, 2...Negative electrode, 3...
... Separator, 4... Case. Name of agent: Patent attorney Toshio Nakao and one other person I-
Positive pole 2- Negative pole 3- and pallet Φ- Case 5- Insulating song Figure 1
Claims (2)
極、セパレータおよび電解液より成る主発電要素を密閉
容器に収納した密閉形ニッケル・水素蓄電池であって、
蓄電池構成時における電極は、正・負極とも電気化学的
な充電・放電のいづれの過程も全く経過していない放電
状態であり、水素吸蔵合金は水素ガスの吸蔵放出過程を
経過していなく、正極中には、電気化学的に酸化される
コバルトおよび／または２価のコバルト酸化物の微粉末
を有し、通常の使用条件下での放電容量は正極の放電容
量によって規制されたことを特徴とする水素吸蔵合金を
用いた密閉形ニッケル・水素蓄電池。(1) A sealed nickel-metal hydride storage battery in which a main power generation element consisting of a negative electrode mainly composed of a hydrogen storage alloy, a nickel positive electrode, a separator, and an electrolyte is housed in a sealed container,
When configuring a storage battery, both the positive and negative electrodes are in a discharged state without undergoing any electrochemical charging or discharging process, and the hydrogen storage alloy has not undergone the process of absorbing and releasing hydrogen gas; It contains fine powder of electrochemically oxidized cobalt and/or divalent cobalt oxide, and its discharge capacity under normal usage conditions is regulated by the discharge capacity of the positive electrode. A sealed nickel-hydrogen storage battery using a hydrogen storage alloy.
量は、これらを含まないニッケル正極を用いた前記蓄電
池の完全放電時に残存する正極容量以上の充電可能容量
を有する特許請求の範囲第１項記載の水素吸蔵合金を用
いた密閉形ニッケル・水素蓄電池。(2) The amount of cobalt and/or divalent cobalt oxide has a chargeable capacity greater than or equal to the positive electrode capacity remaining upon complete discharge of the storage battery using a nickel positive electrode that does not contain these. A sealed nickel-hydrogen storage battery using the hydrogen storage alloy described above.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62290019A JP2733230B2 (en) | 1987-11-17 | 1987-11-17 | Sealed nickel-hydrogen storage battery using hydrogen storage alloy |
| EP88302472A EP0284333B1 (en) | 1987-03-25 | 1988-03-22 | Sealed type nickel-hydride battery and production process thereof |
| US07/171,739 US4935318A (en) | 1987-03-25 | 1988-03-22 | Sealed type nickel-hydride battery and production process thereof |
| DE3854727T DE3854727T2 (en) | 1987-03-25 | 1988-03-22 | Gas-tight nickel hydride battery and method of manufacture. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62290019A JP2733230B2 (en) | 1987-11-17 | 1987-11-17 | Sealed nickel-hydrogen storage battery using hydrogen storage alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01132066A true JPH01132066A (en) | 1989-05-24 |
| JP2733230B2 JP2733230B2 (en) | 1998-03-30 |
Family
ID=17750736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62290019A Expired - Lifetime JP2733230B2 (en) | 1987-03-25 | 1987-11-17 | Sealed nickel-hydrogen storage battery using hydrogen storage alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2733230B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737610A (en) * | 1992-12-10 | 1995-02-07 | Furukawa Battery Co Ltd:The | Manufacture of sealed alkaline storage battery using paste type nickel positive electrode |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575018A (en) * | 1980-06-13 | 1982-01-11 | Olympus Optical Co Ltd | Focus controller |
| JPS6139461A (en) * | 1984-07-31 | 1986-02-25 | Toshiba Corp | Manufacture of enclosed alkaline battery |
-
1987
- 1987-11-17 JP JP62290019A patent/JP2733230B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575018A (en) * | 1980-06-13 | 1982-01-11 | Olympus Optical Co Ltd | Focus controller |
| JPS6139461A (en) * | 1984-07-31 | 1986-02-25 | Toshiba Corp | Manufacture of enclosed alkaline battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0737610A (en) * | 1992-12-10 | 1995-02-07 | Furukawa Battery Co Ltd:The | Manufacture of sealed alkaline storage battery using paste type nickel positive electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2733230B2 (en) | 1998-03-30 |
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