JP2975616B2 - Nickel oxide / hydrogen storage alloy secondary battery - Google Patents
Nickel oxide / hydrogen storage alloy secondary batteryInfo
- Publication number
- JP2975616B2 JP2975616B2 JP1278710A JP27871089A JP2975616B2 JP 2975616 B2 JP2975616 B2 JP 2975616B2 JP 1278710 A JP1278710 A JP 1278710A JP 27871089 A JP27871089 A JP 27871089A JP 2975616 B2 JP2975616 B2 JP 2975616B2
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- Japan
- Prior art keywords
- hydrogen storage
- storage alloy
- electrode
- paste
- nickel oxide
- Prior art date
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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)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明はニッケル酸化物・水素吸蔵合金二次電池に関
する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a nickel oxide / hydrogen storage alloy secondary battery.
（従来の技術） 近年、多量の水素を可逆的に吸蔵・放出できる水素吸
蔵合金を負極材料にしたニッケル酸化物・水素吸蔵合金
二次電池は、高エネルギー密度の二次電池として注目さ
れている。(Prior Art) In recent years, a nickel oxide / hydrogen storage alloy secondary battery using a hydrogen storage alloy capable of reversibly storing and releasing a large amount of hydrogen as a negative electrode material has attracted attention as a high energy density secondary battery. .
このようなニッケル酸化物・水素吸蔵合金二次電池
は、前記水素吸蔵合金を含む水素吸蔵合金電極と、コバ
ルト酸化物を含むニッケル酸化物電極とを渦巻状に捲回
した電極群を備え、前記水素吸蔵合金電極を負極とし前
記ニッケル酸化物電極を正極とした構成であり、一般的
なアルカリ二次電池であるニッケル・カドミウム二次電
池と同様の構成で組立てることができる。Such a nickel oxide / hydrogen storage alloy secondary battery includes a hydrogen storage alloy electrode including the hydrogen storage alloy, and an electrode group in which a nickel oxide electrode including cobalt oxide is spirally wound. It has a configuration in which a hydrogen storage alloy electrode is used as a negative electrode and the nickel oxide electrode is used as a positive electrode, and can be assembled in the same configuration as a nickel-cadmium secondary battery which is a general alkaline secondary battery.
ところで、従来、上述したニッケル酸化物・水素吸蔵
合金二次電池の水素吸蔵合金電極としては、水素吸蔵
合金の焼結により得られる焼結式水素吸蔵合金電極や、
発泡金属、焼結繊維などの三次元金属多孔体を集電体
とし、この集電体に水素吸蔵合金粉末を高分子結着剤と
共に充填することにり得られるものが知られている。By the way, conventionally, as the hydrogen storage alloy electrode of the above-described nickel oxide / hydrogen storage alloy secondary battery, a sintered hydrogen storage alloy electrode obtained by sintering a hydrogen storage alloy,
It is known that a three-dimensional porous metal such as foamed metal or sintered fiber is used as a current collector, and the current collector is filled with a hydrogen storage alloy powder together with a polymer binder.
しかしながら、前者の焼結式水素吸蔵合金電極は、製
造工程が繁雑であるため製造コストが高くなるという問
題がある。また、後者の水素吸蔵合金電極は、集電体に
使用する三次元金属多孔体が高価であるため製造コスト
が高くなるという問題があり、更に前記三次元金属多孔
体の機械的強度が弱いため捲回時に破損し、電池内部に
絶縁不良が発生するという問題がある。However, the former sintered hydrogen storage alloy electrode has a problem in that the production process is complicated and the production cost is high. Also, the latter hydrogen storage alloy electrode has a problem that the three-dimensional metal porous body used for the current collector is expensive, so that the production cost is high, and further, the mechanical strength of the three-dimensional metal porous body is weak. There is a problem that the battery is damaged at the time of winding and insulation failure occurs inside the battery.
そこで、パンチドメタルを集電体とし、この集電体に
水素吸蔵合金粉末と高分子結着剤とを混合したペースト
を塗布・乾燥することにより得られるペースト式水素吸
蔵合金電極が提案されている。このペースト式水素吸蔵
合金電極は、前記三次元金属多孔体より安価であるパン
チドメタルを集電体としているため、低コストで製造で
きる。Therefore, a paste-type hydrogen-absorbing alloy electrode obtained by applying a punched metal current collector to a paste obtained by mixing a hydrogen-absorbing alloy powder and a polymer binder onto the current collector and drying the paste has been proposed. I have. This paste-type hydrogen storage alloy electrode can be manufactured at low cost because punched metal, which is cheaper than the three-dimensional porous metal body, is used as the current collector.
しかしながら、前記ペースト式水素吸蔵合金電極は、
捲回時に折れ曲がることにより、集電体であるパンチド
メタルが電極外部に突出したり、電極活物質が脱落する
という問題がある。However, the paste-type hydrogen storage alloy electrode,
By being bent at the time of winding, there is a problem that a punched metal as a current collector protrudes outside the electrode and an electrode active material falls off.
（発明が解決しようとする課題） 本発明は、従来の課題を解決するためになされたもの
で、捲回時に集電体の突出や電極活物質の脱落が防止さ
れた良好なペースト式水素吸蔵合金電極を備えたニッケ
ル酸化物・水素吸蔵合金二次電池を提供しようとするも
のである。(Problems to be Solved by the Invention) The present invention has been made in order to solve the conventional problems, and has a good paste-type hydrogen storage in which the current collector is prevented from projecting and the electrode active material is prevented from falling off during winding. An object of the present invention is to provide a nickel oxide / hydrogen storage alloy secondary battery having an alloy electrode.
［発明の構成］ （課題を解決するための手段） 本発明は、水素吸蔵合金を含むペーストを集電体に塗
布した構造を有するペースト式水素吸蔵合金電極と、ペ
ースト式ニッケル酸化物電極とをセパレータを介して渦
巻状に捲回した電極群を具備するニッケル酸化物・水素
吸蔵合金二次電池において、 前記集電体は、互いに隣り合う３つの孔の中心を結ぶ
と常に正三角形が形成されるように穿孔されたパンチド
メタルからなり、 前記電極群の捲回方向は、前記集電体の前記正三角形
の一辺と平行であることを特徴とするニッケル酸化物・
水素吸蔵合金二次電池である。[Means for Solving the Problems] The present invention provides a paste-type hydrogen storage alloy electrode having a structure in which a paste containing a hydrogen storage alloy is applied to a current collector, and a paste-type nickel oxide electrode. In a nickel oxide / hydrogen storage alloy secondary battery including an electrode group spirally wound with a separator interposed therebetween, the current collector always forms an equilateral triangle when connecting the centers of three adjacent holes. Nickel oxide, characterized in that the winding direction of the electrode group is parallel to one side of the equilateral triangle of the current collector.
It is a hydrogen storage alloy secondary battery.
前記水素吸蔵合金電極は、水素吸蔵合金を含むペース
トを集電体であるパンチドメタルに塗布・乾燥した構造
である。前記ペーストは、通常、水素吸蔵合金粉末に高
分子結着剤を配合し、必要に応じて導電性粉末を配合し
たものである。The hydrogen storage alloy electrode has a structure in which a paste containing a hydrogen storage alloy is applied to a punched metal as a current collector and dried. The paste is usually one in which a polymer binder is blended with the hydrogen storage alloy powder and, if necessary, a conductive powder is blended.
前記水素吸蔵合金としては、格別制限されるものでは
なく、電解液中で電気化学的に発生させた水素の吸蔵で
き、かつ放電時にその吸蔵した水素を容易に放出できる
ものであればよく、例えばLaNi5合金、MmNi5合金（Mm;
ミッシュメタル）、LmNi5合金（Lm;ランタンリッチミッ
シュメタル）、及びこれら合金のNiの一部をAl、Mn、F
e、Cr、Cu、Co、Zn、Zr、Ｖ、Ti等の元素で置換した多
元系合金が挙げられ、更にMg2Ni系合金、TiNi系合金、T
iFe系合金などが挙げられる。The hydrogen storage alloy is not particularly limited, and may be any as long as it can store hydrogen electrochemically generated in an electrolytic solution and can easily release the stored hydrogen at the time of discharge. LaNi 5 alloy, MmNi 5 alloy (Mm;
Misch metal), LmNi 5 alloy (Lm; lanthanum rich misch metal), and part of Ni of these alloys are Al, Mn, F
e, Cr, Cu, Co, Zn, Zr, V, Ti, and the like, and ternary alloys substituted with elements such as Mg 2 Ni-based alloys, TiNi-based alloys, T
iFe alloys and the like.
前記ペースト中に配合される高分子結着剤としては、
ポリアクリル酸ナトリウム、ポリアクリル酸アンモニウ
ム等のポリアクリル酸塩、ディスパージョンタイプのポ
リテトラフルオロエチレン（PTFE）等のフッ素樹脂結着
剤、カルボキシメチルセルロース（CMC）などを挙げる
ことができる。As the polymer binder compounded in the paste,
Examples thereof include polyacrylates such as sodium polyacrylate and ammonium polyacrylate, fluorine resin binders such as dispersion type polytetrafluoroethylene (PTFE), and carboxymethyl cellulose (CMC).
前記ペースト中に配合される導電性粉末としては、カ
ーボンブラック、黒鉛粉末などを挙げることができる。Examples of the conductive powder blended in the paste include carbon black and graphite powder.
（作用） 本発明によれば、ペースト式水素吸蔵合金電極を構成
する集電体を隣接する孔同志の中心を結んだ線が正三角
形を形成するように穿孔されたパンチドメタルで形成す
ることにより、開孔率を大きくできるため、水素吸蔵合
金の充填量を高めることができる。更に、前記集電体を
前記正三角形の一辺と平行する方向に捲回することによ
り、前記ペースト式水素吸蔵合金電極は捲回時に集電体
の突出や電極活物質の脱落が防止される。(Function) According to the present invention, the current collector constituting the paste-type hydrogen storage alloy electrode is formed of punched metal perforated such that a line connecting the centers of adjacent holes forms an equilateral triangle. Thereby, the opening ratio can be increased, so that the filling amount of the hydrogen storage alloy can be increased. Further, by winding the current collector in a direction parallel to one side of the equilateral triangle, the paste-type hydrogen storage alloy electrode is prevented from projecting the current collector and falling off the electrode active material during winding.
即ち、前記ペースト式水素吸蔵合金電極がペースト式
ニッケル酸化物電極と共に渦巻状に捲回されると、集電
体であるパンチドメタルは捲回方向に垂直で、かつ孔の
中心を含む線で折れる。ところで、前記ペースト式水素
吸蔵合金電極の捲回方向は前記パンチドメタルの孔を基
準にして見れば、前記正三角形の一辺と平行になる場
合と、前記正三角形の一辺と垂直になる場合との２通
りがある。前者の正三角形の一辺と平行する方向に前記
ペースト式水素吸蔵合金電極を捲回した場合は、折線と
折線との間隔は正三角形の一辺の長さの1/2である。一
方、後者の正三角形の一辺と垂直になる方向に前記ペー
スト式水素吸蔵合金電極を捲回した場合は、折線と折線
との間隔は正三角形の一辺の長さの である。従って、前記正三角形の一辺と平行になるよう
に前記ペースト式水素吸蔵合金電極を捲回すれば、折線
と折線との間隔を短くすることができ、ペースト式水素
吸蔵合金電極は細かく小さな角度で折れながら渦巻状に
捲回される。その結果、特に折れ角度が大きい捲回初期
において、集電体であるパンチドメタルの電極外部への
突出や、電極活物質の脱落が有効に防止される。That is, when the paste-type hydrogen storage alloy electrode is spirally wound together with the paste-type nickel oxide electrode, the punched metal as the current collector is a line perpendicular to the winding direction and including the center of the hole. Break. By the way, the winding direction of the paste-type hydrogen storage alloy electrode, when viewed from the hole of the punched metal, is parallel to one side of the equilateral triangle and perpendicular to one side of the equilateral triangle. There are two ways. When the paste-type hydrogen storage alloy electrode is wound in a direction parallel to one side of the former equilateral triangle, the interval between the fold lines is half the length of one side of the equilateral triangle. On the other hand, when the paste-type hydrogen storage alloy electrode is wound in a direction perpendicular to one side of the latter equilateral triangle, the interval between the fold lines is equal to the length of one side of the equilateral triangle. It is. Therefore, if the paste-type hydrogen storage alloy electrode is wound so as to be parallel to one side of the equilateral triangle, the interval between the fold lines can be shortened, and the paste-type hydrogen storage alloy electrode can be formed with a small angle at a small angle. It is spirally wound while being broken. As a result, particularly in the early stage of winding having a large bending angle, protrusion of the punched metal as a current collector to the outside of the electrode and dropout of the electrode active material are effectively prevented.
また、本発明のニッケル酸化物・水素吸蔵合金は、負
極のペースト式水素吸蔵合金電極及び正極のペースト式
ニッケル酸化物電極がいずれも高エネルギー密度化でき
る電極であるので、電池の高容量化に十分に対応可能で
ある。In addition, the nickel oxide / hydrogen storage alloy of the present invention is capable of increasing the energy density of the battery because both the paste-type hydrogen storage alloy electrode of the negative electrode and the paste-type nickel oxide electrode of the positive electrode are electrodes capable of increasing the energy density. It is possible to respond enough.
（実施例） 以下、本発明の実施例を詳細に説明する。(Example) Hereinafter, an example of the present invention will be described in detail.
実施例１ まず、200メッシュの篩を通過したLmNi4.2Co0.2Mn0.3
Al0.3合金の水素吸蔵合金粉末100重量部に、高分子結着
剤として、ポリアクリル酸ナトリウム0.5重量部、CMC0.
125重量部、及びディスパージョンタイプのポリテトラ
フルオロエチレン1.5重量部、導電性粉末としてカーボ
ンブラック1.0重量部及び水を配合してペーストを混合
調製した。次いで、第１図に示すような隣接する孔１同
志の中心を結んだ線2a,2b,2cが正三角形を形成するよう
に穿孔した60゜千鳥のパンチドメタル３を集電体として
用意し、前記ペーストをこのパンチドメタル３に塗布・
乾燥・圧延し、裁断することによりペースト式水素吸蔵
合金電極を作製した。Example 1 First, LmNi 4.2 Co 0.2 Mn 0.3 passed through a 200-mesh sieve.
100 parts by weight of hydrogen storage alloy powder of Al 0.3 alloy, 0.5 parts by weight of sodium polyacrylate as a polymer binder, CMC 0.
A paste was prepared by mixing 125 parts by weight, 1.5 parts by weight of dispersion-type polytetrafluoroethylene, 1.0 part by weight of carbon black as a conductive powder, and water. Next, as shown in FIG. 1, a 60 ° zigzag punched metal 3 perforated so that lines 2a, 2b, 2c connecting the centers of adjacent holes 1 form an equilateral triangle is prepared as a current collector. The paste is applied to the punched metal 3.
The paste-type hydrogen storage alloy electrode was produced by drying, rolling and cutting.
前記ペースト式水素吸蔵合金電極と、酸化コバルトを
含むペースト式ニッケル酸化物電極とをポリアミド不織
布からなるセパレータを介して、前記正三角形の一辺2a
と平行する方向（矢印方向）に渦巻状に捲回して電極群
を作製した。The paste-type hydrogen storage alloy electrode and the paste-type nickel oxide electrode containing cobalt oxide are separated via a separator made of a polyamide non-woven fabric, and the side 2a of the equilateral triangle is interposed.
The electrode group was fabricated by spirally winding in a direction (arrow direction) parallel to the above.
このように作製された電極群を具備する試験電池を10
0個用意し、それぞれの電池について、正極・負極間に
直流100Vを通電し、そのときの絶縁抵抗を測定する絶縁
試験を行なった。その結果、絶縁不良数は100個中３個
であった。A test battery equipped with the electrode group thus prepared
0 batteries were prepared, and for each of the batteries, a DC voltage of 100 V was applied between the positive electrode and the negative electrode, and an insulation test was performed to measure the insulation resistance at that time. As a result, the number of defective insulation was 3 out of 100.
また、比較例１として第２図に示すような隣接する孔
６同志の中心を結んだ線7a,7b,7cが正三角形を形成する
ように穿孔した60゜千鳥のパンチドメタル８を集電体と
して用意し、前記正三角形の一辺7aと垂直になる方向
（矢印方向）に渦巻状に捲回した以外、実施例１と同様
にして電極群を作製し、実施例１と同様に絶縁試験を行
なったところ、絶縁不良数は100個中17個であった。As Comparative Example 1, the punched metal 8 of 60 ゜ staggered punched such that lines 7a, 7b, 7c connecting the centers of adjacent holes 6 form an equilateral triangle as shown in FIG. An electrode group was prepared in the same manner as in Example 1, except that the electrode group was prepared as a body and spirally wound in a direction (arrow direction) perpendicular to one side 7a of the equilateral triangle. As a result, the number of defective insulations was 17 out of 100.
この結果から明らかなように本発明のニッケル酸化物
・水素吸蔵合金二次電池は、絶縁不良の発生率が低いこ
とが確認できた。この原因は、実施例１の電極の捲回時
においては第１図に示すようにパンチドメタル３の折線
の間隔l1が正三角形の一辺の長さの1/2であるのに対
し、比較例１の電極では第２図に示すように同折線の間
隔l2が正三角形の一辺の長さの である。この結果、実施例１のペースト式水素吸蔵合金
電極の方が細かく小さな角度で折れながら捲回されるた
め、捲回によるパンチドメタルの突出や電極活物質の脱
落が防止されたものと考えられる。As is clear from these results, it was confirmed that the nickel oxide / hydrogen storage alloy secondary battery of the present invention had a low rate of occurrence of insulation failure. This is because the interval l 1 between the fold lines of the punched metal 3 is の of the length of one side of the equilateral triangle as shown in FIG. Comparative example 1 the electrode spacing l 2 of the polygonal line as shown in FIG. 2 of one side of the equilateral triangle the length of the It is. As a result, since the paste-type hydrogen storage alloy electrode of Example 1 was wound while being bent at a finer and smaller angle, it is considered that the protrusion of the punched metal due to the winding and the falling off of the electrode active material were prevented. .
［発明の効果］ 以上詳述した如く、本発明によれば捲回時に集電体の
突出や電極活物質の脱落が防止された良好なペースト式
水素吸蔵合金電極を備え、絶縁不良の発生を抑制した高
信頼性で高容量のニッケル酸化物・水素吸蔵合金二次電
池を提供することができる。[Effects of the Invention] As described in detail above, according to the present invention, a good paste-type hydrogen storage alloy electrode in which the current collector is prevented from projecting and the electrode active material is prevented from dropping during winding is provided, and insulation failure is prevented. A suppressed nickel oxide / hydrogen storage alloy secondary battery with high reliability and high capacity can be provided.
第１図は実施例１の電極群における捲回方向に対するパ
ンチドメタルの孔の配置状態を示す説明図、第２図は比
較例１の電極群におけるパンチドメタルの孔の配置状態
を示する説明図である。 １……孔、2a,2b,2c……隣接する孔同志の中心を結んだ
線、３……パンチドメタル。FIG. 1 is an explanatory diagram showing an arrangement state of punched metal holes in a winding direction in an electrode group of Example 1, and FIG. 2 is a view showing an arrangement state of punched metal holes in an electrode group of Comparative Example 1. FIG. 1 ... hole, 2a, 2b, 2c ... line connecting the centers of adjacent holes, 3 ... punched metal.
フロントページの続き (72)発明者 佐藤 優治 神奈川県川崎市幸区小向東芝町１番地 株式会社東芝総合研究所内 (72)発明者 高橋 浩之 東京都品川区南品川３丁目４番10号 東 芝電池株式会社内 (72)発明者 猿渡 一郎 東京都品川区南品川３丁目４番10号 東 芝電池株式会社内 (72)発明者 長谷部 裕之 神奈川県川崎市幸区小向東芝町１番地 株式会社東芝総合研究所内 (56)参考文献 特開 昭62−285360（ＪＰ，Ａ) 特開 昭64−67868（ＪＰ，Ａ) 特開 昭55−128269（ＪＰ，Ａ) 実開 昭53−138125（ＪＰ，Ｕ) 実開 昭60−17567（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 4/74 H01M 4/24 - 4/26 H01M 10/24 - 10/30 Continuation of the front page (72) Inventor Yuji Sato 1st Toshiba Research Institute, Komukai Koyuki, Kawasaki City, Kanagawa Prefecture (72) Inventor Hiroyuki Takahashi 3-4-10 Minamishinagawa, Shinagawa-ku, Tokyo Toshiba Within Battery Co., Ltd. (72) Inventor Ichiro Saruwatari 3-4-10 Minamishinagawa, Shinagawa-ku, Tokyo Toshiba Battery Co., Ltd. (72) Inventor Hiroyuki Hasebe No. 1 Komukai Toshiba-cho, Saiwai-ku, Kawasaki-shi, Kanagawa In Toshiba Research Institute (56) References JP-A-62-285360 (JP, A) JP-A-64-67868 (JP, A) JP-A-55-128269 (JP, A) Jpn. , U) Actual opening 60-60567 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) H01M 4/74 H01M 4/24-4/26 H01M 10/24-10/30
Claims (1)
布した構造を有するペースト式水素吸蔵合金電極と、ペ
ースト式ニッケル酸化物電極とをセパレータを介して渦
巻状に捲回した電極群を具備するニッケル酸化物・水素
吸蔵合金二次電池において、 前記集電体は、互いに隣り合う３つの孔の中心を結ぶと
常に正三角形が形成されるように穿孔されたパンチドメ
タルからなり、 前記電極群の捲回方向は、前記集電体の前記正三角形の
一辺と平行であることを特徴とするニッケル酸化物・水
素吸蔵合金二次電池。An electrode group in which a paste-type hydrogen storage alloy electrode having a structure in which a paste containing a hydrogen storage alloy is applied to a current collector and a paste-type nickel oxide electrode are spirally wound via a separator. In the nickel oxide / hydrogen storage alloy secondary battery provided, the current collector is made of punched metal that is perforated so that an equilateral triangle is always formed when the centers of three adjacent holes are connected. The winding direction of the electrode group is parallel to one side of the equilateral triangle of the current collector, wherein the secondary battery is a nickel oxide / hydrogen storage alloy secondary battery.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278710A JP2975616B2 (en) | 1989-10-27 | 1989-10-27 | Nickel oxide / hydrogen storage alloy secondary battery |
| DE69014185T DE69014185T2 (en) | 1989-09-18 | 1990-09-18 | Secondary nickel metal hydride cell. |
| EP90310214A EP0419221B1 (en) | 1989-09-18 | 1990-09-18 | Nickel-metal hydride secondary cell |
| US07/584,107 US5053292A (en) | 1989-09-18 | 1990-09-18 | Nickel-metal hydride secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278710A JP2975616B2 (en) | 1989-10-27 | 1989-10-27 | Nickel oxide / hydrogen storage alloy secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03141554A JPH03141554A (en) | 1991-06-17 |
| JP2975616B2 true JP2975616B2 (en) | 1999-11-10 |
Family
ID=17601113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1278710A Expired - Lifetime JP2975616B2 (en) | 1989-09-18 | 1989-10-27 | Nickel oxide / hydrogen storage alloy secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2975616B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5527638A (en) * | 1993-06-30 | 1996-06-18 | Matsushita Electric Industrial Co., Ltd. | Hydrogen storage alloy electrode and sealed-type nickel-metal hydride storage battery using the same |
| KR960043320A (en) * | 1995-05-31 | 1996-12-23 | 윤종용 | Method for manufacturing current collector for secondary battery and pole plate |
-
1989
- 1989-10-27 JP JP1278710A patent/JP2975616B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03141554A (en) | 1991-06-17 |
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