JPH0869801A - Manufacture of electrode support body - Google Patents
Manufacture of electrode support bodyInfo
- Publication number
- JPH0869801A JPH0869801A JP6206582A JP20658294A JPH0869801A JP H0869801 A JPH0869801 A JP H0869801A JP 6206582 A JP6206582 A JP 6206582A JP 20658294 A JP20658294 A JP 20658294A JP H0869801 A JPH0869801 A JP H0869801A
- Authority
- JP
- Japan
- Prior art keywords
- electrode support
- nonwoven fabric
- woven fabric
- electrode
- heat treatment
- 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.)
- Withdrawn
Links
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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アルカリ蓄電池等の電
極に用いられる金属多孔体（電極支持体）の製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a metal porous body (electrode support) used for electrodes such as alkaline storage batteries.
【０００２】[0002]
【従来の技術】近年、各種電子機器、特に携帯機器用の
電源として高容量のニッケル−カドミウム（Ｎｉ−Ｃ
ｄ）電池やニッケル−水素（Ｎｉ−ＭＨ）電池などのア
ルカリ二次電池が注目されている。従来、アルカリ二次
電池の正極には、Ｎｉ粉末を焼結した焼結式基板が用い
られていた。しかし、この基板は、気孔度が８０％と小
さいことから、近年高容量電池には気孔度が９５％程度
と大きく、三次元的連続気孔を有する発泡金属や金属不
織布などの電極支持体が用いられている。2. Description of the Related Art In recent years, high capacity nickel-cadmium (Ni-C) has been used as a power source for various electronic devices, especially portable devices.
d) Attention has been paid to alkaline secondary batteries such as batteries and nickel-hydrogen (Ni-MH) batteries. Conventionally, a sintered type substrate obtained by sintering Ni powder has been used as a positive electrode of an alkaline secondary battery. However, since this substrate has a small porosity of 80%, a high-capacity battery has a large porosity of about 95% in recent years, and an electrode support such as a foam metal or a metal nonwoven fabric having three-dimensional continuous pores is used. Has been.
【０００３】従来、このような電極支持体は、たとえば
特公昭５７−３９３１７号公報に開示されているよう
に、カーボン粉末を発泡ウレタン等の基材に塗布し、回
転する給電ロールに密着させながら電気めっきするドラ
ムめっきと呼ばれる電気めっきを行ない、次いで通常の
電気めっきを行なった後、加熱により基材を除去するこ
とにより、得ることができた。また、特開昭６１−７６
６８６号公報に開示されているように、金属被膜を気相
法によって基材上に形成し電気めっきを行なった後、基
材を除去する方法もある。さらに最近、基材に無電解め
っきを施した後、電気めっきを行ない、次いで基材を除
去して電極支持体を得るという手法が用いられるように
なってきている。Conventionally, such an electrode support is coated with carbon powder on a base material such as urethane foam and is brought into close contact with a rotating power supply roll, as disclosed in, for example, Japanese Patent Publication No. 57-39317. Electroplating, which is called drum plating for electroplating, was performed, and then the electroplating was performed. Then, the base material was removed by heating to obtain the electroplating product. Also, JP-A-61-76
As disclosed in Japanese Patent No. 686, there is also a method of removing a base material after forming a metal coating on the base material by a vapor phase method and performing electroplating. More recently, a technique has been used in which electroless plating is performed on a base material, electroplating is performed, and then the base material is removed to obtain an electrode support.
【０００４】これらの方法において、金属を堆積するた
めの基材として有機短繊維をからませた不織布を用いる
ことができる。In these methods, a nonwoven fabric in which organic short fibers are entangled can be used as a base material for depositing a metal.
【０００５】[0005]
【発明が解決しようとする課題】有機繊維の不織布に無
電解めっきを施し、さらに電気めっきを施した後、熱処
理により有機繊維を消失させて得られる金属多孔体を、
たとえばアルカリ電池の電極支持体として用いたとき、
該金属多孔体に活物質を充填してなる電極を対極と共に
セパレータを挟んで捲回する際、金属多孔体を構成する
金属繊維がセパレータを貫通して対極に接触し、内部短
絡を生じることがあった。A metal porous body obtained by electroless plating a nonwoven fabric of organic fibers, further electroplating the organic fibers, and then eliminating the organic fibers by heat treatment,
For example, when used as an electrode support for alkaline batteries,
When an electrode formed by filling the metal porous body with an active material is wound with a counter electrode sandwiching the separator, the metal fibers forming the metal porous body may penetrate the separator and come into contact with the counter electrode to cause an internal short circuit. there were.
【０００６】本発明の目的は、このような内部短絡の問
題を起こすことのない電極用支持体を製造するための方
法を提供することにある。An object of the present invention is to provide a method for manufacturing a support for electrodes which does not cause such a problem of internal short circuit.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、電極用支
持体に用いる金属多孔体の繊維がセパレータを貫通する
原因について鋭意検討した。その結果、次のことが明ら
かになった。金属多孔体を形成するために用いられる不
織布として、有機短繊維をバインダで接着したものを用
いた場合、図２（ａ）に示すように通常その表面は繊維
がけばだっている。これにめっき（無電解めっきおよび
電気めっき）を施した後、熱処理して不織布を分解除去
して得られる金属多孔体の表面も、不織布の表面を反映
してけばだっている（図２（ｂ）参照）。このけばだっ
た金属多孔体にローラプレスをかけたとしても、得られ
る電極の表面には、図２（ｃ）に示すようにけばだちの
残り１が存在する。また、ローラプレスによって折れた
金属２が表面に存在する場合もある。このようなけばだ
ちや折れた金属繊維が電池作製の際、セパレータに突き
刺さり、内部短絡を引起こしていたと考えられた。DISCLOSURE OF THE INVENTION The inventors of the present invention have diligently studied the cause of penetration of fibers of a metal porous body used as a support for electrodes into a separator. As a result, the following things became clear. When a non-woven fabric used for forming a metal porous body is one in which organic short fibers are bonded with a binder, the surface thereof is usually fluffy as shown in FIG. 2 (a). The surface of the metal porous body obtained by decomposing and removing the nonwoven fabric by subjecting it to plating (electroless plating and electroplating) and then heat treatment is also fluffy (FIG. 2 (b)). reference). Even if this fluffy porous metal body is roller-pressed, the surface 1 of the obtained electrode has the rest 1 of the fluff as shown in FIG. 2 (c). Further, there are cases where the metal 2 broken by the roller press is present on the surface. It was considered that such fluff and broken metal fibers pierced the separator during the production of the battery, causing an internal short circuit.
【０００８】そこで、このような金属多孔体のけばだち
を防止するため鋭意研究を行なった結果、有機繊維から
なる不織布において、少なくとも表面が熱溶着により滑
らかにされた不織布を金属多孔体の形成に用いることに
より、けばだちの形成が抑制されることを見出し本発明
を完成させるに至った。Therefore, as a result of intensive studies to prevent the fluttering of such a porous metal body, a nonwoven fabric made of organic fibers, at least the surface of which is smoothed by heat-welding, is used as a porous metal body. The present invention was found to suppress the formation of fluff by using it for the formation and completed the present invention.
【０００９】すなわち、本発明の電極支持体の製造方法
は、活物質を充填して電池用電極を形成するための電極
支持体を製造する方法であって、三次元的連続気孔を有
し、有機繊維からなる不織布にめっきを施す工程と、め
っきされた不織布に熱処理を施して該不織布を分解除去
し、電極支持体のための金属多孔体を得る工程とを備
え、該不織布として、少なくとも表面において熱処理に
より有機繊維のけばだちが抑えられ、表面が滑らかにさ
れたものを用いることを特徴とする。That is, the method for producing an electrode support of the present invention is a method for producing an electrode support for forming a battery electrode by filling it with an active material, and having three-dimensional continuous pores, The method comprises the steps of plating a non-woven fabric made of organic fibers and subjecting the plated non-woven fabric to heat treatment to decompose and remove the non-woven fabric to obtain a porous metal body for an electrode support. In the method 1, the fluff of the organic fiber is suppressed by the heat treatment, and the surface of the organic fiber is smoothed.
【００１０】本発明において、不織布表面は、たとえば
熱溶着により滑らかにすることができる。たとえば、有
機繊維からなる不織布を、該有機繊維の融点以上に加熱
したローラでプレスすることにより、滑らかな表面が得
られる。表面の熱溶着により、表面の有機繊維は平面上
に沿い、けばだちがなくなる。本発明では、特に有機繊
維を熱溶着させた不織布（サーマルボンド不織布）を好
ましく用いることができる。サーマルボンド不織布は、
バインダで接着した不織布よりも、はるかに滑らかな表
面を有し、表面のけばだちが少ない。このような不織布
の形成方法として、カード法、メルトブロー法などがあ
る。本発明に用いられる不織布は、たとえば、ポリエス
テル、ポリエチレン、ポリプロピレンなどのポリマ繊維
からなる。In the present invention, the non-woven fabric surface can be smoothed by, for example, heat welding. For example, a non-woven fabric made of organic fibers is pressed by a roller heated to a temperature higher than the melting point of the organic fibers to obtain a smooth surface. Due to the heat-sealing of the surface, the organic fibers on the surface lie along a plane and are fluff-free. In the present invention, a nonwoven fabric (thermal bond nonwoven fabric) in which organic fibers are heat-welded can be preferably used. The thermal bond nonwoven fabric is
It has a much smoother surface and less surface fluff than non-woven bonded with a binder. As a method for forming such a non-woven fabric, there are a card method, a melt blow method and the like. The non-woven fabric used in the present invention is made of polymer fibers such as polyester, polyethylene and polypropylene.
【００１１】本発明に従って金属多孔体は、無電解ニッ
ケルめっきを用いて形成することができる。無電解ニッ
ケルめっきには、還元剤として次亜リン酸または硼素化
合物等が用いられる。硼素化合物には、たとえば水素化
硼素化合物、ジメチルアミンボランなどがある。無電解
めっきでは、支持体上にたとえばＰｄ／Ｓｎ触媒を吸着
させた後、触媒を活性化し、次いでニッケル等および還
元剤を含むめっき液に支持体を浸漬する。無電解めっき
の後、めっき重量等を調節する目的で、電気めっきを行
なうことができる。この後不織布は、たとえば酸素雰囲
気中での熱処理により分解除去することができる。その
後、得られた金属多孔体は、たとえば水素などの還元性
雰囲気中で熱処理することによって、集電体としての電
極支持体をもたらすことができる。The metal porous body according to the present invention can be formed by electroless nickel plating. For electroless nickel plating, hypophosphorous acid, a boron compound or the like is used as a reducing agent. Examples of boron compounds include boron hydride compounds and dimethylamine borane. In electroless plating, for example, a Pd / Sn catalyst is adsorbed on the support, the catalyst is activated, and then the support is immersed in a plating solution containing nickel and the like and a reducing agent. After electroless plating, electroplating can be performed for the purpose of adjusting the plating weight and the like. After that, the non-woven fabric can be decomposed and removed by, for example, heat treatment in an oxygen atmosphere. Then, the obtained metal porous body can be heat-treated in a reducing atmosphere such as hydrogen to provide an electrode support as a current collector.
【００１２】また電極形成のため、集電体としての電極
支持体には活物質が充填される。活物質には、たとえ
ば、水酸化ニッケルを主成分とする混合物を用いること
ができる。混合物における成分としては、たとえばコバ
ルト３〜１５重量％、水酸化コバルト１〜５重量％、酸
化亜鉛１〜５重量％を挙げることができる。その他に、
ポリビニルアルコールやカルボキシルメチルセルロース
などを水に加えてなる結着剤等を用いてもよい。In order to form an electrode, an electrode support as a current collector is filled with an active material. As the active material, for example, a mixture containing nickel hydroxide as a main component can be used. Examples of components in the mixture include 3 to 15% by weight of cobalt, 1 to 5% by weight of cobalt hydroxide, and 1 to 5% by weight of zinc oxide. Other,
You may use the binder etc. which add polyvinyl alcohol and carboxymethyl cellulose to water.
【００１３】本発明に従って形成される電極支持体はた
とえばニッケル−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に適用することができる。The electrode support formed according to the present invention can be applied to alkaline storage batteries such as nickel-cadmium batteries and nickel-hydrogen batteries.
【００１４】[0014]
【発明の作用効果】図１（ａ）を参照して、熱処理、た
とえば有機繊維の融点以上に加熱したローラによって不
織布をプレスすることにより、表面の有機繊維のけばだ
ちはなくなり、滑らかな表面が得られる。このような滑
らかな表面を有する不織布に、めっき（たとえば無電解
めっきおよびそれに続く電気めっき）を施し、次いで熱
処理によって不織布を分解除去すると、図１（ｂ）に示
すように、不織布の形状を反映して、けばだちが抑えら
れた滑らかな表面を有する金属多孔体が得られる。この
多孔体を電極用支持体として用いられば、電池作製時に
電極用支持体の表面部分がセパレータに突き刺さること
もなく、内部短絡の問題が解消される。従来では、電極
作製時に、金属多孔体にローラプレスをかけていたが、
場合によってはこのようなプレスをかける必要もなくな
る。ローラプレスをかけることなく、活物質をそのまま
金属多孔体に充填し電極を作製することができる。With reference to FIG. 1 (a), heat treatment, for example, pressing the non-woven fabric with a roller heated to a temperature higher than the melting point of the organic fibers eliminates the fluttering of the organic fibers on the surface and makes it smooth. The surface is obtained. When a non-woven fabric having such a smooth surface is plated (for example, electroless plating and subsequent electroplating), and then the non-woven fabric is decomposed and removed by heat treatment, the shape of the non-woven fabric is reflected as shown in FIG. 1 (b). As a result, a porous metal body having a smooth surface with reduced fuzz is obtained. If this porous body is used as a support for electrodes, the surface portion of the support for electrodes will not be pierced by the separator during battery production, and the problem of internal short circuit will be solved. Conventionally, a roller press was applied to a metal porous body at the time of manufacturing an electrode,
In some cases, it is not necessary to apply such a press. The electrode can be produced by directly filling the porous metal body with the active material without applying a roller press.
【００１５】本発明によれば、表面のより滑らかな電極
支持体が得られ、電極支持体による内部短絡の発生は防
止される。According to the present invention, an electrode support having a smoother surface can be obtained, and the occurrence of internal short circuit due to the electrode support can be prevented.
【００１６】[0016]
【実施例】以下に実施例によって本発明をより詳細に説
明するが、これらは本発明を何ら限定するものではな
い。EXAMPLES The present invention will be described in more detail with reference to examples below, but these do not limit the present invention in any way.
【００１７】線径１８μｍのポリプロピレン短繊維（繊
維長平均５０μｍ）をカードおよびクロスラッパー機に
より繊維目付け６０ｇ／ｍ2 、厚さ１５ｍｍのクロスウ
ェブを作製した。このウェブに２００℃の熱風を吹付け
ポリプロピレン繊維表面を一部融解させた後、１９５℃
に加熱した間隔１．４ｍｍのロールの間を通し圧縮する
ことにより、繊維目付け６０ｇ／ｍ2 、厚さ１．０ｍｍ
の不織布を得た。次に、無電解ニッケルめっきにより不
織布に導電性を付与した後、電気ニッケルめっきを行な
った。次いで加熱によって不織布を分解除去し、目付け
５００ｇ／ｍ2の金属不織布を得た。A polypropylene short fiber having a wire diameter of 18 μm (fiber length average 50 μm) was used to prepare a cross web having a fiber basis weight of 60 g / m 2 and a thickness of 15 mm by a card and cross wrapper machine. Hot air of 200 ° C was blown onto this web to partially melt the polypropylene fiber surface, and then 195 ° C
The fiber basis weight is 60 g / m 2 and the thickness is 1.0 mm by compressing through a roll heated at a distance of 1.4 mm.
A non-woven fabric was obtained. Next, electroless nickel plating was performed after imparting conductivity to the nonwoven fabric by electroless nickel plating. Next, the non-woven fabric was decomposed and removed by heating to obtain a metal non-woven fabric having a basis weight of 500 g / m 2 .
【００１８】水酸化ニッケル粉末９０重量部、および一
酸化コバルト（ＣｏＯ）粉末１０重量部からなる混合粉
体に、水酸化ニッケル粉末に対してカルボキシルメチル
セルロース０．５重量％、およびテトラフルオロエチレ
ン３．０重量％を添加し、さらにこれらに純水４５重量
％を添加して混練することにより、ペーストを調製し
た。続いて、得られたペーストを金属不織布の空隙に充
填し、乾燥した後、ローラプレスによって圧延すること
により、厚さが０．７ｍｍ、電極単位体積あたりの電気
容量が５００ｍＡｈ／ｃｃのペースト式ニッケル正極を
作製した。2. A mixed powder consisting of 90 parts by weight of nickel hydroxide powder and 10 parts by weight of cobalt monoxide (CoO) powder, 0.5% by weight of carboxymethyl cellulose based on the nickel hydroxide powder, and tetrafluoroethylene. A paste was prepared by adding 0% by weight and further adding 45% by weight of pure water thereto and kneading. Then, the obtained paste is filled in the voids of the metallic non-woven fabric, dried, and rolled by a roller press to have a thickness of 0.7 mm and an electric capacity per electrode unit volume of 500 mAh / cc. A positive electrode was produced.
【００１９】得られた電極と、水素吸蔵合金を用いた負
極およびポリプロピレン製セパレータとを一緒に捲回
し、単３サイズの電池を作製した。電池を１００個作製
したところ、すべて短絡せず正常に作動した。The obtained electrode, a negative electrode using a hydrogen storage alloy and a polypropylene separator were wound together to produce a size AA battery. When 100 batteries were produced, they all operated normally without short circuit.
【００２０】［比較例］線径１５μｍのポリプロピレン
短繊維を実施例と同様にクロスウェブとし、エポキシエ
マルジョンからなる配合液に浸漬した後、乾燥、硬化さ
せ、エポキシ系バインダによって短繊維が接着された目
付け６０ｇ／ｍ2 、厚さ１．５ｍｍの不織布を得た。次
に、無電解ニッケルめっきにより不織布に導電性を付与
した後、電気ニッケルめっきを行なった。次いで加熱に
よって不織布を分解除去し、目付け５００ｇ／ｍ2 の金
属不織布を得た。Comparative Example A polypropylene short fiber having a wire diameter of 15 μm was formed into a cross web in the same manner as in the example, dipped in a compounding solution consisting of an epoxy emulsion, dried and cured, and the short fiber was bonded by an epoxy binder. A nonwoven fabric having a basis weight of 60 g / m 2 and a thickness of 1.5 mm was obtained. Next, electroless nickel plating was performed after imparting conductivity to the nonwoven fabric by electroless nickel plating. Next, the non-woven fabric was decomposed and removed by heating to obtain a metal non-woven fabric having a basis weight of 500 g / m 2 .
【００２１】得られた金属不織布をローラにかけ、厚み
を１．０ｍｍとした。得られた金属不織布に、実施例と
同様の方法で活物質を充填し正極を得た。実施例と同様
にして単３サイズの電池を１００個作製したところ、１
５個に短絡が生じた。The obtained metal nonwoven fabric was put on a roller to have a thickness of 1.0 mm. The obtained metallic nonwoven fabric was filled with an active material in the same manner as in Example to obtain a positive electrode. When 100 AA size batteries were produced in the same manner as in the example, 1
Short circuit occurred in 5 pieces.
【００２２】以上に示すように、本発明によれば、短絡
不良なく電池を作製することができる電極支持体を提供
できた。As described above, according to the present invention, it is possible to provide an electrode support which can produce a battery without a short circuit failure.
【図１】本発明に従って表面が滑らかにされた不織布お
よびその不織布を用いて得られる金属多孔体の形状を模
式的に示す図である。FIG. 1 is a diagram schematically showing the shape of a nonwoven fabric having a smooth surface according to the present invention and a metal porous body obtained using the nonwoven fabric.
【図２】従来法で得られる不織布および金属多孔体を示
す模式図である。FIG. 2 is a schematic diagram showing a nonwoven fabric and a metal porous body obtained by a conventional method.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 花房 幸司 大阪市此花区島屋一丁目１番３号 住友電 気工業株式会社大阪製作所内 (72)発明者 細江 晃久 大阪市此花区島屋一丁目１番３号 住友電 気工業株式会社大阪製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Hanafusa 1-3-1, Shimaya, Konohana-ku, Osaka No. 3 Sumitomo Electric Industries, Ltd. Osaka Works
Claims (2)
ための電極支持体を製造する方法であって、 三次元的連続気孔を有し、有機繊維からなる不織布にめ
っきを施す工程と、 前記めっきされた不織布に熱処理を施して該不織布を分
解除去し、前記電極支持体のための金属多孔体を得る工
程とを備え、 前記不織布として、少なくとも表面において熱処理によ
り前記有機繊維のけばだちが抑えられ、表面が滑らかに
されたものを用いることを特徴とする、電極支持体の製
造方法。1. A method of manufacturing an electrode support for forming an electrode for a battery by filling an active material, the method comprising plating a non-woven fabric made of organic fibers and having three-dimensional continuous pores. A step of subjecting the plated non-woven fabric to a heat treatment to decompose and remove the non-woven fabric to obtain a metal porous body for the electrode support, and as the non-woven fabric, at least the surface of the organic fiber is fluffed by a heat treatment. A method for producing an electrode support, which comprises using a material having a smooth surface with suppressed mottle.
ラでプレスすることにより表面が滑らかにされた不織布
を用いることを特徴とする、請求項１に記載の電極支持
体の製造方法。2. The method for producing an electrode support according to claim 1, wherein a nonwoven fabric whose surface is smoothed by pressing with a roller heated to a temperature equal to or higher than the melting point of the organic fiber is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6206582A JPH0869801A (en) | 1994-08-31 | 1994-08-31 | Manufacture of electrode support body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6206582A JPH0869801A (en) | 1994-08-31 | 1994-08-31 | Manufacture of electrode support body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0869801A true JPH0869801A (en) | 1996-03-12 |
Family
ID=16525793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6206582A Withdrawn JPH0869801A (en) | 1994-08-31 | 1994-08-31 | Manufacture of electrode support body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0869801A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011023232A (en) * | 2009-07-16 | 2011-02-03 | Japan Vilene Co Ltd | Current-collecting material for electrochemical element and electrochemical element using the same |
| WO2012077550A1 (en) | 2010-12-08 | 2012-06-14 | 住友電気工業株式会社 | Metallic porous body having high corrosion resistance and method for manufacturing same |
| EP2644722A2 (en) | 2010-12-08 | 2013-10-02 | Sumitomo Electric Industries, Ltd. | Highly corrosion-resistant porous metal body and method for producing the same |
-
1994
- 1994-08-31 JP JP6206582A patent/JPH0869801A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011023232A (en) * | 2009-07-16 | 2011-02-03 | Japan Vilene Co Ltd | Current-collecting material for electrochemical element and electrochemical element using the same |
| WO2012077550A1 (en) | 2010-12-08 | 2012-06-14 | 住友電気工業株式会社 | Metallic porous body having high corrosion resistance and method for manufacturing same |
| EP2644722A2 (en) | 2010-12-08 | 2013-10-02 | Sumitomo Electric Industries, Ltd. | Highly corrosion-resistant porous metal body and method for producing the same |
| EP2644721A2 (en) | 2010-12-08 | 2013-10-02 | Sumitomo Electric Industries, Ltd. | Highly corrosion-resistant porous metal body and method for producing the same |
| US10164262B2 (en) | 2010-12-08 | 2018-12-25 | Sumitomo Electric Industries, Ltd. | Method for producing a porous metal body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20011106 |