JPS62139258A - Electrode for storage battery - Google Patents
Electrode for storage batteryInfo
- Publication number
- JPS62139258A JPS62139258A JP60279521A JP27952185A JPS62139258A JP S62139258 A JPS62139258 A JP S62139258A JP 60279521 A JP60279521 A JP 60279521A JP 27952185 A JP27952185 A JP 27952185A JP S62139258 A JPS62139258 A JP S62139258A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- electrode
- internal pressure
- storage battery
- alloy
- 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
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
-
- 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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- 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、アルカリ蓄電池などの負極に用いる電気化学
的に水素の吸蔵・放出が可能な蓄電池用電極に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a storage battery electrode capable of electrochemically absorbing and releasing hydrogen, which is used as a negative electrode of an alkaline storage battery or the like.
従来の技術
従来、この種の二次電池としては鉛蓄電池、ニッケルー
カドミウム蓄電池がよく知られているが、これらの蓄電
池は単位重量または単位体積当シのエネルギー密度が比
較的小さい欠点がある。そこで、電気化学的に多量の水
素を吸蔵・放出が可能２ページ
な合金を負極とし、正極にはニッケル酸化物を用いたエ
ネルギー密度の大きいニッケルー水素蓄電池が提案され
ている。ここでの負極には電気化学的に水素の吸蔵・放
出が可能なＬａＮｉ５やＬａＮｉ４Ｃｕ。2. Description of the Related Art Hitherto, lead-acid batteries and nickel-cadmium storage batteries have been well known as secondary batteries of this type, but these batteries have the drawback of relatively low energy density per unit weight or unit volume. Therefore, a nickel-hydrogen storage battery with high energy density has been proposed in which the negative electrode is a metal alloy that can electrochemically absorb and release a large amount of hydrogen, and the positive electrode is nickel oxide. The negative electrode here is LaNi5 or LaNi4Cu, which can electrochemically absorb and release hydrogen.
ＬａＮｉ４Ｃｏ 、 ＬａＮｉ、、Ｎ７゜、３等の水素
吸蔵合金が用いられている。たとえば特公昭５９−４９
６７１号公報が知られている。また、特に高温での特性
を改善するためにＬａＮ１４．２５Ｍｎｏ、−ｒ６（イ
ンターナショナル シンポジウム ハイドライド エナ
ージ ストレージ Ｉｎｔ、Ｓｙｍｐ、Ｈｙｄｒｉｄｅ
ＥｎｅｒｇｙＳｔｏｉａｇｅ Ｐ、 ４８５ （１９
７８））が用いられている。Hydrogen storage alloys such as LaNi4Co, LaNi, N7°, 3, etc. are used. For example, special public relations
No. 671 is known. In addition, to improve the characteristics especially at high temperatures, LaN14.25Mno, -r6 (International Symposium Hydride Energy Storage Int, Symp, Hydride
EnergyStoiage P, 485 (19
78)) is used.
発明が解決しようとする問題点
しかしこのような従来の構成による水素吸蔵合金を負極
とし、正極にニッケル極を用いて密閉電池系を構成した
場合、６時間率（０，２６通）程度の充電で、１００サ
イクル程度の充放電の繰シ返すと電池内圧が１０気圧以
上になるという問題がある。また、”ｉ４．２５”０．
７５の合金を用いて密閉電池系を構成した場合、電池内
圧は数サイクル３ペー／゛
で１ｏ気圧以上になるという問題がある。さらに、これ
らの合金を用いた場合、１時間率以上の放電率で放電し
た場合、放電容量が非常に低下するという問題があった
。本発明はこのような問題点を解決するもので、負極を
構成する水素吸蔵合金組成を改良することを目的とする
。Problems to be Solved by the Invention However, when a sealed battery system is constructed using such a conventional hydrogen storage alloy as a negative electrode and a nickel electrode as a positive electrode, charging at a rate of about 6 hours (0.26 cycles) is possible. However, there is a problem in that when charging and discharging are repeated for about 100 cycles, the internal pressure of the battery becomes 10 atmospheres or more. Also, "i4.25" 0.
When a sealed battery system is constructed using an alloy of No. 75, there is a problem that the internal pressure of the battery becomes 10 atm or more after several cycles of 3 p/s. Furthermore, when these alloys are used, there is a problem in that the discharge capacity is significantly reduced when discharge is performed at a discharge rate of 1 hour or more. The present invention aims to solve these problems and aims to improve the composition of the hydrogen storage alloy that constitutes the negative electrode.
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に、本発明は、ＬｎＮｉｘＭ
ｎｙＣｕｚＣｏ工（ただし、Ｌｎはランタン単独又はラ
ンタンを含む希土類元素の混合物、４．５＜Ｘ十Ｙ＋
Ｚ ＋ ｃｔ＜：５．５ｔ Ｘ＞ ３．５＋ ０．２＜
Ｙ＜１ 、ｏ、 ０．２＜Ｚ＜１．５．０．２＜ｄ＜１
．５ ） テ表わせる水素吸蔵合金を備えた負極とした
ものである。Means for Solving the Problem In order to solve this problem, the present invention provides LnNixM
nyCuzCo (however, Ln is lanthanum alone or a mixture of rare earth elements containing lanthanum, 4.5<X0Y+
Z + ct<:5.5t X> 3.5+ 0.2<
Y<1, o, 0.2<Z<1.5.0.2<d<1
．． 5) The negative electrode is equipped with a hydrogen-absorbing alloy that exhibits TE.
作 用
このようにＣａＣｕ６型結晶構造をもつ希土類−ニッケ
ル系合金のニッケルの一部をマンガン、銅およびコバル
トで置換した組成の合金を用いることによシ、電池内圧
が上昇せず、高率放電特性の優れた密閉電池を得ること
ができる。マンガンの添加によシ、幅広い温度範囲で安
定した放電容量を示し、銅の添加は高率放電特性を向上
させる。さらに、コバルトの添加によシ、充放電サイク
ルを繰シ返しても電池内圧が上昇しない。すなわち、過
充電時に正極から発生する酸素ガス消費能力を低下させ
ない密閉電池を得ることができる。Function: By using an alloy with a composition in which a part of the nickel in a rare earth-nickel alloy with a CaCu6 type crystal structure is replaced with manganese, copper, and cobalt, the internal pressure of the battery does not increase and high rate discharge is achieved. A sealed battery with excellent characteristics can be obtained. Addition of manganese shows stable discharge capacity over a wide temperature range, and addition of copper improves high rate discharge characteristics. Furthermore, due to the addition of cobalt, the internal pressure of the battery does not increase even after repeated charging and discharging cycles. That is, it is possible to obtain a sealed battery that does not reduce its ability to consume oxygen gas generated from the positive electrode during overcharging.
実施例
以下本発明をその実施例によシ説明する。市販のミソシ
ュメタルＭｍ（希土類元素の混合物、例えばＣｅ ４５
ｗｔ％、Ｌａ３０ｗｔ％、 Ｎｄ ６ ｗｔ％。EXAMPLES The present invention will be explained below with reference to Examples. Commercially available Misos metal Mm (mixture of rare earth elements, e.g. Ce 45
wt%, La30wt%, Nd6wt%.
他の希土類元素２０ｗｔ％）とＬａ 、 Ｎｉ 、 Ｍ
ｎ 、Ｃｕ。other rare earth elements (20 wt%) and La, Ni, M
n, Cu.
ＣＯの各試料を所定の組成比に秤量し混合した。Each sample of CO was weighed and mixed to a predetermined composition ratio.
これらの試料をアーク溶解炉に入れて、１０〜１０”’
ｔｏｒｚ まで真空状態にした後、アルゴンガス雰囲
気中でアーク放電し、加熱溶解させた。試料の均質化を
図るために数回反転させてアーク溶解を行い水素吸蔵合
金を得た。さらに、この合金の均質性を良好にするため
に、アルゴンガス雰囲気中にて１０００℃で８時間熱処
理を行い、次にこの合金を粗粉砕後、ボールミルで３８
μｍ以下の粉末にし、負極に用いる合金粉末を得た。こ
れ５ペーノ
らの合金粉末をポリビニルアルコールの５ｗｔ ％水溶
液でペースト状にし、発泡ニッケル多孔体に充填し乾燥
した。次に、これらの電極を比重１．３０のＫＯＨ水溶
液中に４６℃で１２時間浸漬してアルカリ処理を施し、
水洗、乾燥後、加圧し負極とする。These samples were placed in an arc melting furnace and melted at 10 to 10"'
After creating a vacuum state with torz, arc discharge was performed in an argon gas atmosphere to heat and melt. In order to homogenize the sample, the sample was inverted several times and arc melted to obtain a hydrogen storage alloy. Furthermore, in order to improve the homogeneity of this alloy, heat treatment was performed at 1000°C for 8 hours in an argon gas atmosphere, and then this alloy was coarsely ground and then milled in a ball mill for 38 hours.
The alloy powder was made into a powder of micrometer or less and used for a negative electrode. This 5-peno alloy powder was made into a paste with a 5 wt % aqueous solution of polyvinyl alcohol, filled into a foamed nickel porous body, and dried. Next, these electrodes were immersed in a KOH aqueous solution with a specific gravity of 1.30 at 46°C for 12 hours to perform alkali treatment.
After washing with water and drying, pressurize it and use it as a negative electrode.
正極には公知の焼結式ニッケル極を用い、セパレータを
介してＡＡサイズの密閉型蓄電池を構成した。電解液は
比重１．２６のＫＯＨ水溶液にＬｉＯＨ・−Ｐ内圧は、
電池ケース底部にドリルで１ｆｆの穴をあけ、圧力セン
サーを取シ付けた固定装置に電池を固定し測定した。実
施例で用いた電極の水素吸蔵合金の組成を次表に示す。A well-known sintered nickel electrode was used as the positive electrode, and an AA-sized sealed storage battery was constructed with a separator interposed therebetween. The electrolyte is a KOH aqueous solution with a specific gravity of 1.26, and the internal pressure of LiOH・-P is
A 1ff hole was drilled in the bottom of the battery case, and the battery was fixed to a fixing device to which a pressure sensor was attached, and measurements were taken. The composition of the hydrogen storage alloy of the electrode used in the example is shown in the following table.
６ ベーン
また、充放電サイクル数と電池内圧の関係を調べた結果
を第１図に示す。第１図から明らかなように、従来例の
電極Ａ、Ｂ、Ｃ，Ｄを用いた電池の内圧は１００〜１４
０サイクルの充放電の繰シ返しによシ、電池内圧は１０
Ｋｇ／ｄ以上になる。6 Vane Figure 1 also shows the results of investigating the relationship between the number of charge/discharge cycles and battery internal pressure. As is clear from Fig. 1, the internal pressure of the battery using conventional electrodes A, B, C, and D is 100 to 14
After repeated charging and discharging of 0 cycles, the internal pressure of the battery is 10
It becomes more than Kg/d.
また、電極Ｅを用いた場合、２００サイクル程度の充放
電で電池内圧は５Ｋ１１／ｄになシ、信頼性を考慮する
と好ましくない。これに対し本実施例で用いた電極Ｆ、
Ｇ、Ｉ、Ｊ、に、Ｌ、Ｍで構成した電池は、充放電サイ
クルを２００サイクル繰シ返７ベー／
しても電池内圧はほとんど上昇しないことがわかる。第
１図に示したように、コバルトの添加量が多い程、電池
内圧は低いことがわかる。一般に、ニッケル正極は過充
電時に酸素ガスを発生する。Further, when electrode E is used, the internal pressure of the battery is 5K11/d after about 200 charging/discharging cycles, which is not preferable in terms of reliability. In contrast, the electrode F used in this example,
It can be seen that in a battery composed of G, I, J, L, and M, the internal pressure of the battery hardly increases even after 200 charge/discharge cycles of 7 b/d. As shown in FIG. 1, it can be seen that the larger the amount of cobalt added, the lower the battery internal pressure. Generally, nickel positive electrodes generate oxygen gas when overcharged.
しかしながら、この酸素ガスは次の反応によって負極で
消費されるものと考えられる。すなわち、酸素ガスは水
素を吸蔵した負極表面上で化学的消費反応（ＭＨ工＋
０２＋ＭＨ！、、、＋２Ｈ２０） ト、電気化学的す消
費反応（０２＋ ２Ｈ２０−ｔ−４ｅ−→４０１ｒ 、
４０Ｈ−＋ ＭＨｘ＋ ＭＨｘ、−４＋４ Ｈ２Ｏ）
がおこる。コバルトの添加は化学的および電気化学的な
酸素消費反応の速度を早くする効果がある。コバルトの
添加量が原子比で０．１の電極Ｋを用いた電池の内圧は
、％Ｃ，Ａの充電率でｔｓ、２Ｋｇ／ｄとなる。信頼性
を考慮すると電池内圧はｓ Ｋｆ／ ｃｉ以下が好まし
い。したがって、コバルト添加量は原子比で０．２以上
必要である。また、コバルト添加量が原子比で１．６以
上になると単位重量又は単位体積当シの放電容量が低下
し、蓄電池用電極としては好ましくない。However, it is thought that this oxygen gas is consumed at the negative electrode by the following reaction. In other words, oxygen gas undergoes a chemical consumption reaction (MH process +
02+MH! ,,, +2H20) G, Electrochemical consumption reaction (02+ 2H20-t-4e-→401r,
40H-+ MHx+ MHx, -4+4 H2O)
occurs. The addition of cobalt has the effect of speeding up chemical and electrochemical oxygen-consuming reactions. The internal pressure of a battery using electrode K in which the amount of cobalt added is 0.1 in terms of atomic ratio is ts, 2 Kg/d at a charging rate of %C,A. In consideration of reliability, the battery internal pressure is preferably s Kf/ci or less. Therefore, the amount of cobalt added must be 0.2 or more in terms of atomic ratio. Further, if the amount of cobalt added is 1.6 or more in terms of atomic ratio, the discharge capacity per unit weight or unit volume decreases, which is not preferable as an electrode for a storage battery.
次に、高率放電特性を調べた結果を第２図に示す。なお
、充電は％−ＡＸ４，６ｈｒ、 、放電終止電圧は１．
ｏｖである。従来例の電極りおよび銅を含まない電極工
を用いて構成した電池を１Ｃ気八へ上の放電率で放電し
た場合、０．２Ｇ通の放電容量に対する容量比率は、非
常に低下することがわかる。Next, FIG. 2 shows the results of examining high rate discharge characteristics. The charging time is %-AX4.6hr, and the discharge end voltage is 1.
It is ov. When a battery constructed using conventional electrodes and copper-free electrodes is discharged at a discharge rate above 1C, the capacity ratio to the 0.2G discharge capacity can be significantly reduced. Recognize.
これに対し、銅を含む電極Ｈ，Ｉを用いて構成した電池
の高率放電特性は非常に良好であることがわかる。銅の
添加は合金中の水素の拡散速度を早める結果、高率放電
特性が良好となる。しかしながら、コバルトを含まない
電極Ｈを用いた電池は、充放電サイクルの繰シ返しによ
シミ池内圧が高くなる。したがって、蓄電池用電極とし
てはコバルトと銅の両元素が共存する必要がある。銅は
、原子比で０．２以下では高率放電特性に効果はなく、
１．５以上では単位重量、単位体積当シの放電容量を低
下させる。したがって、銅の添加は原子比で０．２〜１
．６の範囲が好ましい。On the other hand, it can be seen that the high rate discharge characteristics of the battery constructed using electrodes H and I containing copper are very good. The addition of copper increases the diffusion rate of hydrogen in the alloy, resulting in better high rate discharge characteristics. However, in a battery using an electrode H that does not contain cobalt, the internal pressure of the stain pond increases due to repeated charging and discharging cycles. Therefore, it is necessary for the storage battery electrode to contain both cobalt and copper. Copper has no effect on high rate discharge characteristics when the atomic ratio is less than 0.2,
When it is 1.5 or more, the discharge capacity per unit weight and unit volume decreases. Therefore, the addition of copper is 0.2 to 1 in atomic ratio.
．． A range of 6 is preferred.
また、Ｎｉ の添加量が原子比で３．５以下および庵の
添加量が１．０以上になると単位重量、単位体積当シの
放電容量が２００ ｍＡｈ ／ ？以下に減少し、９ペ
ーノ
電池構成上好ましくない。さらに、凪の添加量が原子比
で０．２以下でも同様に放電容量が低下し、蓄電池用電
極として最適である。したがって、庵は原子比で０．２
〜１．ｏ 、 Ｎｉは３．５以上が適切である。Furthermore, when the amount of Ni added is 3.5 or less in atomic ratio and the amount of Ni added is 1.0 or more, the discharge capacity per unit weight and unit volume becomes 200 mAh/? This is not preferable in view of the structure of the 9-peno battery. Furthermore, even if the amount of Nagi added is 0.2 or less in terms of atomic ratio, the discharge capacity similarly decreases, making it optimal as an electrode for storage batteries. Therefore, the atomic ratio of the hermitage is 0.2
~1. o, Ni is suitably 3.5 or more.
発明の効果
以上のように、本発明は一般式ＬｎＮｉＸＭｎＹｃｕｚ
ＣＯα（７’ｃだし、Ｌｎはランタン単独又はランタン
を含む希土類元素の混合物、４．５くＸ十Ｙ−）−Ｚ−
１４９，５゜Ｘ）３．５．０．２＜Ｙり１．０．０．２
≦Ｚ＜１．５、０，２≦σ（１，Ｓ）で表せる水素吸蔵
合金を蓄電池用電極として用いることによシ、電池内圧
が充放電サイクル数の繰シ返しによシ上昇せず、高率放
電特性の良好な信頼性の高い工業的価値のめる蓄電池用
電極を提供するものである。Effects of the Invention As described above, the present invention has the general formula LnNiXMnYcuz
COα (7'c stock, Ln is lanthanum alone or a mixture of rare earth elements containing lanthanum, 4.5 x Y-) -Z-
149,5°X)3.5.0.2<Y1.0.0.2
By using a hydrogen storage alloy expressed as ≦Z<1.5, 0,2≦σ(1,S) as an electrode for a storage battery, the internal pressure of the battery does not increase even after repeated charging/discharging cycles. The present invention provides an electrode for a storage battery that has good high rate discharge characteristics, is highly reliable, and has industrial value.
第１図は充放電サイクル数と電池内圧の関係を示す図、
第２図は高率放電特性を示す図である。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図Figure 1 is a diagram showing the relationship between the number of charge/discharge cycles and battery internal pressure.
FIG. 2 is a diagram showing high rate discharge characteristics. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure
Claims (1)
、Ｌｎはランタン単独又はランタンを含む希土類元素の
混合物、４．５≦Ｘ＋Ｙ＋Ｚ＋α≦５．５、Ｘ＞３．５
、０．２≦Ｙ≦１．０、０．２≦Ｚ＜１．５、０．２≦
α＜１．５）で表わせる水素吸蔵合金を備えた蓄電池用
電極。General formula LnNi_XMn_YCu_ZCo_α (Ln is lanthanum alone or a mixture of rare earth elements including lanthanum, 4.5≦X+Y+Z+α≦5.5, X>3.5
, 0.2≦Y≦1.0, 0.2≦Z<1.5, 0.2≦
A storage battery electrode comprising a hydrogen storage alloy expressed by α<1.5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60279521A JPH0690924B2 (en) | 1985-12-12 | 1985-12-12 | Storage battery electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60279521A JPH0690924B2 (en) | 1985-12-12 | 1985-12-12 | Storage battery electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62139258A true JPS62139258A (en) | 1987-06-22 |
| JPH0690924B2 JPH0690924B2 (en) | 1994-11-14 |
Family
ID=17612183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60279521A Expired - Lifetime JPH0690924B2 (en) | 1985-12-12 | 1985-12-12 | Storage battery electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0690924B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512385A (en) * | 1994-02-28 | 1996-04-30 | Matsushita Electric Industrial Co., Ltd. | Hydrogen storage alloy and nickel-metal hydride storage battery using the same |
| EP0793284A1 (en) * | 1996-03-08 | 1997-09-03 | Matsushita Electric Industrial Co., Ltd. | Method of producing a hydrogen storage alloy for alkaline storage battery |
| EP0817290A1 (en) * | 1996-06-28 | 1998-01-07 | Furukawa Denchi Kabushiki Kaisha | Hydrogen occlusion alloys for electrical cells |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60250557A (en) * | 1984-05-25 | 1985-12-11 | Matsushita Electric Ind Co Ltd | Enclosed type alkaline storage battery |
| JPS60250558A (en) * | 1984-05-25 | 1985-12-11 | Matsushita Electric Ind Co Ltd | Enclosed type alkaline storage battery |
| JPS6191863A (en) * | 1984-10-11 | 1986-05-09 | Matsushita Electric Ind Co Ltd | Sealed alkaline storage battery |
| JPS61168870A (en) * | 1985-01-19 | 1986-07-30 | Sanyo Electric Co Ltd | Metal-hydrogen alkaline storage battery |
| JPS61233969A (en) * | 1985-04-10 | 1986-10-18 | Matsushita Electric Ind Co Ltd | Electrode for storage battery |
-
1985
- 1985-12-12 JP JP60279521A patent/JPH0690924B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60250557A (en) * | 1984-05-25 | 1985-12-11 | Matsushita Electric Ind Co Ltd | Enclosed type alkaline storage battery |
| JPS60250558A (en) * | 1984-05-25 | 1985-12-11 | Matsushita Electric Ind Co Ltd | Enclosed type alkaline storage battery |
| JPS6191863A (en) * | 1984-10-11 | 1986-05-09 | Matsushita Electric Ind Co Ltd | Sealed alkaline storage battery |
| JPS61168870A (en) * | 1985-01-19 | 1986-07-30 | Sanyo Electric Co Ltd | Metal-hydrogen alkaline storage battery |
| JPS61233969A (en) * | 1985-04-10 | 1986-10-18 | Matsushita Electric Ind Co Ltd | Electrode for storage battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512385A (en) * | 1994-02-28 | 1996-04-30 | Matsushita Electric Industrial Co., Ltd. | Hydrogen storage alloy and nickel-metal hydride storage battery using the same |
| EP0793284A1 (en) * | 1996-03-08 | 1997-09-03 | Matsushita Electric Industrial Co., Ltd. | Method of producing a hydrogen storage alloy for alkaline storage battery |
| US5837317A (en) * | 1996-03-08 | 1998-11-17 | Matsushita Electric Industrial Co., Ltd. | Method of producing hydrogen storage alloy for battery |
| EP0817290A1 (en) * | 1996-06-28 | 1998-01-07 | Furukawa Denchi Kabushiki Kaisha | Hydrogen occlusion alloys for electrical cells |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0690924B2 (en) | 1994-11-14 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |