JP3251580B2 - Electrode sheet - Google Patents
Electrode sheetInfo
- Publication number
- JP3251580B2 JP3251580B2 JP33758490A JP33758490A JP3251580B2 JP 3251580 B2 JP3251580 B2 JP 3251580B2 JP 33758490 A JP33758490 A JP 33758490A JP 33758490 A JP33758490 A JP 33758490A JP 3251580 B2 JP3251580 B2 JP 3251580B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- sheet
- graphite
- resin
- activated carbon
- 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.)
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Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は電気二重層コンデンサ、電池などの電極に用
いられる電極用シートに関するものである。Description: TECHNICAL FIELD The present invention relates to an electrode sheet used for electrodes of electric double layer capacitors, batteries and the like.
(従来の技術) 電気二重層コンデンサは例えば分極性電極に電解液を
含浸し、セパレーターで分離し、集電極を介して蓄電ま
たは放電をするようにケース内に収納してコンデンサセ
ルを構成し、このコンデンサセルを必要に応じて積み重
ねて積層型電気二重層コンデンサを製造するが、この場
合、集電極と外側金属ケースとの短絡を避けるためにコ
ンデンサセルと外側ケースとの間には間隙および絶縁体
を設ける必要があって、集電極としてはコンデンサセル
の押圧積層により密封形態にする必要上、炭素材料によ
り導電性を付与したラバー板または樹脂シートを使用し
ている(実開平2−120819号〜120821号参照)。(Prior art) In an electric double layer capacitor, for example, a polarizable electrode is impregnated with an electrolytic solution, separated by a separator, and housed in a case so as to be charged or discharged through a collector electrode to constitute a capacitor cell. This capacitor cell is stacked as required to produce a multilayer electric double layer capacitor.In this case, a gap and insulation are provided between the capacitor cell and the outer case to avoid a short circuit between the collector electrode and the outer metal case. A rubber plate or a resin sheet provided with conductivity by a carbon material is used as a collector electrode because it is necessary to form a sealed form by pressing and laminating capacitor cells (Japanese Utility Model Application Laid-Open No. 2-120819). ~ 120821).
さらに、分極性電極としては電解質を含浸する必要
上、その表面積が大きい程、またコンデンサ全体の電気
抵抗を低下させる必要上その電気抵抗が小さいのが好ま
しく、電気抵抗は高いが表面積の大きい活性炭を電気抵
抗の小さい黒鉛と併用することが望まれ、粉末活性炭と
電解質溶液の混合物に20〜80重量%の黒鉛粉末を混入さ
せたペーストを導電性シートの凹部に充填して電極を形
成したり(特開平2−7509号)、20〜80重量%の粉末活
性炭と10〜20重量%の黒鉛又はカーボンブラックと5〜
40重量%の有機バインダーとを湿式混練してシート化し
たりしたもの(特開平1−165108号)が提案されるに至
っている。Further, as the polarizable electrode, it is necessary to impregnate the electrolyte, the larger the surface area, and the lower the electric resistance of the entire capacitor, it is preferable that the electric resistance is small.It is preferable to use activated carbon having a high electric resistance but a large surface area. It is desired to use together with graphite having a small electric resistance, and a paste obtained by mixing 20 to 80% by weight of graphite powder in a mixture of powdered activated carbon and an electrolyte solution is filled in the recesses of the conductive sheet to form electrodes ( JP-A-2-7509), 20 to 80% by weight of powdered activated carbon and 10 to 20% by weight of graphite or carbon black and 5 to 5% by weight.
A sheet obtained by wet-kneading 40% by weight of an organic binder to form a sheet (Japanese Patent Laid-Open No. 1-165108) has been proposed.
(発明が解決しようとする課題) ところで、黒鉛を使用した電極シートに一定の弾性ま
たは成形性を付与する場合、導電性を付与する黒鉛の比
率を一定量以下に制限する必要があって、出来るだけ速
やかに損失なく充放電可能であるためにはコンデンサの
集電極シートの電気抵抗が小さい程好ましいにも拘わら
ず、全体の電気抵抗を高めるという問題がある。(Problems to be Solved by the Invention) By the way, when imparting a certain elasticity or formability to an electrode sheet using graphite, it is necessary to limit the ratio of the graphite for imparting conductivity to a certain amount or less. In order to be able to charge and discharge as quickly as possible without loss, there is a problem that the overall electrical resistance is increased, though the electrical resistance of the collector electrode sheet of the capacitor is preferably as small as possible.
また、分極性電極に関しては混練したものがペースト
状である場合はコンデンサセルの構成形状が制限される
一方、シート化する場合、延伸による平均細孔径および
細孔容量の調整は困難である。Further, regarding the polarizable electrode, when the kneaded material is in the form of a paste, the configuration of the capacitor cell is limited. On the other hand, in the case of forming a sheet, it is difficult to adjust the average pore diameter and pore volume by stretching.
そこで、本発明の第1の目的は少ない黒鉛比率で電気
抵抗の小さい電極用樹脂シートを提供することにある。Accordingly, a first object of the present invention is to provide a resin sheet for an electrode having a small graphite ratio and a small electric resistance.
また、本発明の第2の目的は少ない黒鉛比率で電気抵
抗が小さいだけでなく、電気容量の大きい電極用樹脂シ
ートを提供することにある。It is a second object of the present invention to provide a resin sheet for an electrode having a small graphite ratio and not only a small electric resistance but also a large electric capacity.
さらに、本発明は電気二重層コンデンサの集電極およ
び分極性電極として用いることができる一体型複合電極
を提供するものでもある。Further, the present invention also provides an integrated composite electrode which can be used as a collector electrode and a polarizable electrode of an electric double layer capacitor.
(課題を解決するための手段) 本発明は黒鉛として特に弾性黒鉛体を用いることによ
り少ない配合量でも低い電気抵抗とすることができるこ
とに着目してなされたもので、 弾性黒鉛体を粉末状樹脂または分散状樹脂を用いて結
合してなることを要旨とする電極用シートにある。(Means for Solving the Problems) The present invention has been made by focusing on the fact that it is possible to obtain a low electric resistance even with a small blending amount by using an elastic graphite body as the graphite. Alternatively, the present invention resides in an electrode sheet which is formed by bonding using a dispersed resin.
この弾性黒鉛体は通常の黒鉛と同様に、電気導電性で
あるが、内部構造がスポンジ状であるため、軽量で、圧
縮回復性にすぐれているとともに、嵩密度が小さいため
重量比は少ない。この弾性黒鉛体は特願昭62−164808号
などに記載の方法によって製造することができ、また、
従来公知のものも用いることができる。This elastic graphite body is electrically conductive, similar to ordinary graphite, but has a spongy internal structure, so it is lightweight, has excellent compression recovery properties, and has a small weight ratio due to its low bulk density. This elastic graphite body can be produced by the method described in Japanese Patent Application No. 62-164808, etc.
Conventionally known ones can also be used.
本発明ではこの弾性黒鉛体を粒状物として用いるが、
粒径は0.1μm〜1mm程度が成形操作性の点で好ましい。In the present invention, this elastic graphite body is used as a granular material,
The particle size is preferably about 0.1 μm to 1 mm from the viewpoint of molding operability.
これらを結合させるバインダー樹脂としては、特にテ
トラフルオロエチレン樹脂、エポキシ樹脂、フェノール
樹脂、不飽和ポリエステル樹脂を用いるのが好ましく、
粉末状樹脂または適当な分散媒、水、アルコール類、無
機酸など中に分散させた分散状樹脂で用いるのが好まし
い。なぜなら、前者はバインダーとして用いることによ
り樹脂が弾性黒鉛体粒子に一部接触した状態で結合が起
こるからで、後者はバインダーとして用いることによ
り、樹脂が弾性黒鉛体を包み込んだ状態で粒子の結合が
起こるためで、その結果、樹脂が弾性黒鉛体のスポンジ
構造内部に侵入して構造ひいては弾性特性を損なうこと
なく、良好な成形体を得ることが可能となるからであ
る。As a binder resin for binding these, it is particularly preferable to use a tetrafluoroethylene resin, an epoxy resin, a phenol resin, and an unsaturated polyester resin,
It is preferable to use a powdered resin or a dispersed resin dispersed in an appropriate dispersion medium, water, alcohols, inorganic acids, or the like. The reason is that the former is used as a binder to form a bond in a state where the resin is in partial contact with the elastic graphite particles, and the latter is used as a binder to bind the particles in a state where the resin wraps the elastic graphite body. This is because, as a result, it is possible to obtain a good molded product without penetrating the resin into the sponge structure of the elastic graphite body and impairing the structure and the elasticity.
弾性黒鉛体とバインダー樹脂との配合比率は製品に必
要な強度によって異なるが、100:1〜500の範囲でシート
化が可能であるが、好ましくは100:10〜200が適当であ
る。The blending ratio of the elastic graphite body and the binder resin varies depending on the strength required for the product, but sheeting is possible in the range of 100: 1 to 500, and preferably 100: 10 to 200.
電解質を含浸させる場合は活性炭と混合して表面積を
増大させる必要があるが、弾性黒鉛体を含有させると、
活性炭を充填して、プレスした場合に、弾性黒鉛体が圧
縮され、活性炭との密着性が増大するため、シート化が
容易となる。When impregnating the electrolyte, it is necessary to increase the surface area by mixing with activated carbon, but when the elastic graphite body is contained,
When activated carbon is filled and pressed, the elastic graphite body is compressed and the adhesion to activated carbon is increased, so that sheeting is facilitated.
そこで、本発明の第2の構成は、弾性黒鉛体と粉末活
性炭とを粉末状樹脂または分散状樹脂を用いて結合して
なることを要旨とする電極用シートにある。Then, the 2nd structure of this invention is the sheet | seat for electrodes which makes the elastic graphite body and powdered activated carbon combine by using a powdery resin or a dispersed resin.
ここで、活性炭は一般に高い表面積を有する微小多孔
質であるが、特に表面積3000〜5000m2/gであるのが好ま
しい。Here, activated carbon is generally a microporous material having a high surface area, but preferably has a surface area of 3000 to 5000 m 2 / g.
弾性黒鉛体と活性炭との配合比率は所望する電気抵抗
と電気容量の相対比によって決定されるが、通常重量比
で30〜300:100が適当である。The blending ratio of the elastic graphite body and the activated carbon is determined by the desired relative ratio between the electric resistance and the electric capacity, but usually a weight ratio of 30 to 300: 100 is appropriate.
また、電気二重層コンデンサにおいては分極性電極と
集電極とをセパレータを介して積層することにより組み
立てられるので、組み立て上および両者の接触抵抗を低
減する上で分極性電極と集電極とを一体化するのが好ま
しい。そこで、本発明は上記2種類の電極用樹脂シート
を積層結合してなる一体型複合電極を提供するものでも
ある。In addition, since an electric double layer capacitor is assembled by laminating a polarizable electrode and a collector electrode via a separator, the polarizable electrode and the collector electrode are integrated in assembling and reducing the contact resistance between them. Is preferred. Thus, the present invention also provides an integrated composite electrode obtained by laminating and bonding the above two types of resin sheets for electrodes.
両シートの積層結合は積層シートをロール圧延などの
簡単な加圧によってなされるが、分極性電極側が樹脂の
硬化前もしくは結晶化度の低い状態で加圧するようにす
るのが好ましい。特に、コンデンサ用電極として用いる
場合は両シートを結合する前に分極性電極シートを予め
必要な大きさに切り抜いたものを集電極シートと結合さ
せた後、打ち抜いて複合電極を作製することもできる
(第3図参照) (作用) 本発明によれば、弾性黒鉛体を含有する樹脂シートは
含有量を少なくしても軽量であるため、樹脂マトリクス
に広く分散し、しかもバインダー樹脂は黒鉛粒子に糸状
または蛛の巣状に付着してスポンジ状内部に侵入するこ
となく、黒鉛粒子表面を覆うように付着してバインダー
として機能するため、黒鉛粒子は弾性を失うことがな
い。この現象は活性炭を含有する場合も同じで、第4図
に示すように、弾性黒鉛粒子5と活性炭粒子6はバイン
ダー樹脂である分散状樹脂4によって表面多孔質は樹脂
で損傷されることがなく、結合することができるで、電
解質を充分に含浸させることができ、大きな電気容量と
なるが、その電気抵抗を小さく押さえることができ、し
かも電解質に対して熱化学的に耐久力がある。Although the lamination of the two sheets is performed by simple pressing such as roll rolling, it is preferable that the polarizing electrode be pressed before the resin is cured or in a state of low crystallinity. In particular, when used as a capacitor electrode, a composite electrode can also be prepared by cutting a polarizable electrode sheet into a necessary size in advance before bonding both sheets and bonding the obtained sheet to a collector electrode sheet, and then punching out. (See FIG. 3) (Action) According to the present invention, since the resin sheet containing the elastic graphite body is light even if its content is small, it is widely dispersed in the resin matrix, and the binder resin is used as the graphite particles. The graphite particles do not lose elasticity because they adhere to the surface of the graphite particles and function as a binder without adhering in the form of a thread or a web and penetrating into the interior of the sponge. This phenomenon is the same when the activated carbon is contained. As shown in FIG. 4, the elastic graphite particles 5 and the activated carbon particles 6 are not damaged by the resin in the surface porosity by the dispersed resin 4 as the binder resin. The electrolyte can be sufficiently impregnated with the electrolyte and has a large electric capacity. However, the electric resistance can be kept low and the electrolyte is thermochemically durable.
以下、本発明を添付図面に示す具体例に基づき、詳細
に説明する。Hereinafter, the present invention will be described in detail based on specific examples shown in the accompanying drawings.
(製造例1……集電極シート) 平均粒径1μmに調整した弾性黒鉛粉 (比表面積40m2/g、電気抵抗0.28Ωcm、カサ密度0.35
g/cm2、商品名:エルファイト粒子:興亜石油株式会社
製造)100重量部に予め固形分60%のPTFEディスパージ
ョン(三井デュポンフロロケミカル(株)製30−J)30
0重量部にモノエタノールアミン60重量部を加えたもの
を添加し、粘稠となるまで混練し、モチ状の混練物を得
た。この混練物を折り重ねながら平たく延ばした後、ロ
ール機で1mmのPTFEシートにのせて圧延してシート状に
する。これを容器に入れ、窒素ガス流通下、電気炉中20
0/hrで370℃まで昇温し、2時間保持し、取り出して冷
却し、厚さ140μmおよび200μmの電極用シートを製造
する。(Production Example 1 ... Electrode collector sheet) Elastic graphite powder adjusted to an average particle size of 1 μm (specific surface area 40 m 2 / g, electrical resistance 0.28 Ωcm, bulk density 0.35
g / cm 2 , trade name: L-fight particles: manufactured by Koa Oil Co., Ltd.) 100 parts by weight of PTFE dispersion (30-J, manufactured by DuPont-Mitsui Fluorochemicals Co., Ltd.) having a solid content of 60% in advance
A mixture obtained by adding 60 parts by weight of monoethanolamine to 0 parts by weight was added and kneaded until the mixture became viscous to obtain a sticky kneaded product. The kneaded material is flattened while being folded, then placed on a 1 mm PTFE sheet by a rolling machine and rolled to form a sheet. Put this in a container and place it in an electric furnace under nitrogen gas flow.
The temperature is raised to 370 ° C. at 0 / hr, held for 2 hours, taken out and cooled to produce electrode sheets having a thickness of 140 μm and 200 μm.
(比較例1〜3) 黒鉛粉として平均粒径1μmに調整した天然黒鉛(鱗
状:日本黒鉛製CSSP)、人造黒鉛粒子(日本黒鉛製HAG
−150)、天然黒鉛(日本黒鉛製AUP)を同量用いる以外
は製造例1と同様にして電極用シートを製造する。(Comparative Examples 1 to 3) Natural graphite (scale: CSSP made by Nippon Graphite) and artificial graphite particles (HAG made by Nippon Graphite) adjusted to an average particle size of 1 μm as graphite powder
-150), and an electrode sheet is produced in the same manner as in Production Example 1 except that the same amount of natural graphite (AUP made by Nippon Graphite) is used.
その結果、上記製造例および比較例1〜3の5×10mm
×200μmtの試験片における電気抵抗率および嵩密度は
次の通りであった。As a result, 5 × 10 mm
The electrical resistivity and bulk density of the test piece of × 200 μmt were as follows.
(試験例1) 上記製造例1と比較例1にて製造した200μmの電極
用シートに次のように荷重を加えながら電気抵抗値の変
化を測定した。その結果、第1図に示すように、製造例
1の場合約20kg/cm2において、0.2Ω程度まで低下する
が、比較例1では0.4Ω止まりで、積層型電気二重層コ
ンデンサの圧縮条件下では電極としての抵抗値に大きな
差異が生ずる。 (Test Example 1) A change in electric resistance value was measured while applying a load to the 200 μm electrode sheet manufactured in Production Example 1 and Comparative Example 1 as described below. As a result, as shown in FIG. 1, at the time of about 20 kg / cm 2 in the case of Production Example 1, the resistance dropped to about 0.2 Ω, but in Comparative Example 1, it stopped at 0.4 Ω. In this case, a large difference occurs in the resistance value of the electrode.
(製造例2) 製造例1で製造された電極用シートの表面にアクリル
系導電性カーボン塗料を30〜50μm被覆し、直径13mmφ
の円板状に打ち抜いて集電極シートを得た。表面にカー
ボン塗料を塗布すると、接触電気抵抗が減少することに
なる。(Production Example 2) The surface of the electrode sheet produced in Production Example 1 was coated with an acrylic conductive carbon paint of 30 to 50 μm, and the diameter was 13 mmφ.
To obtain a collector electrode sheet. Applying a carbon coating to the surface will reduce the contact electrical resistance.
(製造例3……分極性電極) 平均粒径1μmに調整した上記弾性黒鉛体100重量部
に平均粒径5μmに調整した活性炭粉末(比表面積3100
m2/g、粒度分布0.5μ〜80μ、細孔容積1.78ml/gを有す
る石油コークスから調整した高純度、高表面積の微小な
多孔質の活性炭粒子)300重量部を加えて、ヘンシェル
ミキサーを用いて2000rpmで5分間混合した。この100重
量部に対し、予め固形分38%のPTFEエナメル(三井デュ
ポンフロロケミカル(株)製プライマー850−300)100
重量部にエタノール250重量部を加えたものを添加し、
粘稠となるまで混練し、モチ状の混練物を得た。この混
練物を織り重ねるように平たく延ばした後、ロール機で
圧延してシート状にする。これを80℃の乾燥器で1時間
乾燥した後、300℃の電気炉に入れ、30分間保持し、取
り出して冷却し、厚さ700μmのシートを製造する。(Production Example 3 ... Polarizable electrode) Activated carbon powder (specific surface area 3100) adjusted to an average particle size of 5 μm was added to 100 parts by weight of the elastic graphite body adjusted to an average particle size of 1 μm.
m 2 / g, particle size distribution 0.5μ ~ 80μ, pore volume 1.78ml / g high purity, high surface area fine porous activated carbon particles prepared from petroleum coke) 300 parts by weight, add a Henschel mixer And mixed at 2000 rpm for 5 minutes. The PTFE enamel (Primer 850-300, manufactured by DuPont-Mitsui Fluorochemicals Co., Ltd.) having a solid content of 38% was previously added to 100 parts by weight of the PTFE enamel.
Add 250 parts by weight of ethanol to parts by weight,
The mixture was kneaded until it became viscous to obtain a sticky kneaded product. The kneaded material is flattened so as to be woven and then rolled by a rolling machine to form a sheet. This is dried in an oven at 80 ° C. for 1 hour, then placed in an electric furnace at 300 ° C., held for 30 minutes, taken out and cooled to produce a 700 μm thick sheet.
(比較例2) 黒鉛粉として平均粒径1μmに調整した人造黒鉛粒子
(日本黒鉛株式会社製HAG−150)を同量用いる以外は製
造例3と同様にして電極用シートを製造する。(Comparative Example 2) An electrode sheet is manufactured in the same manner as in Manufacturing Example 3 except that the same amount of artificial graphite particles (HAG-150 manufactured by Nippon Graphite Co., Ltd.) adjusted to an average particle size of 1 µm is used as graphite powder.
(試験例2) 上記製造例3と比較例2にて製造した電極用シートに
次のように荷重を加えながら電気抵抗値の変化を測定し
た。その結果、第2図に示すように、製造例2の場合約
20kg/cm2において、0.1Ω程度まで低下するが、比較例
1では0.3Ω止まりで、積層型電気二重層コンデンサの
圧縮条件下では電極としての抵抗値に大きな差異が生ず
る。(Test Example 2) A change in electric resistance was measured while applying a load to the electrode sheets manufactured in Production Example 3 and Comparative Example 2 as described below. As a result, as shown in FIG.
At 20 kg / cm 2 , the resistance drops to about 0.1Ω, but stops at 0.3Ω in Comparative Example 1, and a large difference occurs in the resistance value as an electrode under the compression condition of the multilayer electric double layer capacitor.
(製造例4) 第3図に示すように、製造例1で製造した集電極用シ
ート(a)と製造例3で製造した分極性電極(b)とを
用意し、両者を積層してロールプレスに付して、複合シ
ート(c)を作製する。これを必要に応じて焼成もしく
は硬化させ、打ち抜いて複合電極(d)を製造する。(Production Example 4) As shown in FIG. 3, a sheet for a collector (a) produced in Production Example 1 and a polarizable electrode (b) produced in Production Example 3 were prepared, and both were laminated and rolled. The composite sheet (c) is prepared by pressing. This is fired or cured as required, and punched out to produce a composite electrode (d).
この複合電極はセパレータを介して積み重ねることに
よって、簡単に積層型電気二重層コンデンサを組み立て
ることができる。By stacking the composite electrodes via a separator, a multilayer electric double layer capacitor can be easily assembled.
(発明の効果) 以上の説明で明らかなように、本発明によれば、黒鉛
を含有させる電極用樹脂シートにおいて、黒鉛として弾
性黒鉛体を用いるので、少量でも電気抵抗を小さくする
ことができ、成形性の優れた電極材料を提供することが
できる。また、加圧時の電気抵抗の低減比率が大きいの
で、積層型コンデンサの集電極として利用することがで
きる。さらにまた、本発明によれば、活性炭と弾性黒鉛
体とを含有する電極用シートは少量の弾性黒鉛体によっ
て充分の電気抵抗を低減することができるので、活性炭
の含有量を多くして電気容量の大きい電極材料を提供で
きる。この電極材料で分極性電極を製作すると、電気二
重層コンデンサの容量を活性炭で増大させ、その内部電
気抵抗は弾性活性炭粒子のネットワークで小さくするこ
とができるので、優れたコンデンサ特性が示される。(Effects of the Invention) As is clear from the above description, according to the present invention, in the electrode resin sheet containing graphite, since the elastic graphite body is used as graphite, the electric resistance can be reduced even in a small amount, An electrode material having excellent moldability can be provided. Further, since the reduction ratio of the electric resistance during pressurization is large, it can be used as a collector electrode of a multilayer capacitor. Furthermore, according to the present invention, the electrode sheet containing the activated carbon and the elastic graphite body can sufficiently reduce the electric resistance by a small amount of the elastic graphite body. Can provide an electrode material having a large value. When a polarizable electrode is manufactured from this electrode material, the capacity of the electric double layer capacitor can be increased by activated carbon, and its internal electric resistance can be reduced by the network of elastic activated carbon particles, thereby exhibiting excellent capacitor characteristics.
さらに、上記2種の電極用シートは加圧により結合す
ることができるので、両者の接触抵抗を低減することが
できる。Further, since the two types of electrode sheets can be joined by pressing, the contact resistance between them can be reduced.
第1図および第2図は本発明に係る第1および第2電極
用シートの加圧電気抵抗変化を示す対数グラフ、第3図
(a)ないし(d)は分極用電極と集電極との複合電極
の組み立て工程を示す工程概略図、第4図は分散状樹脂
と弾性黒鉛体粒子、活性炭粒子との結合状態を示す模式
図である。 1……集電極シート、2……分極性電極 3……複合電極、4……分散状樹脂 5……弾性黒鉛体粒子、6……活性炭粒子FIGS. 1 and 2 are logarithmic graphs showing the change in electric resistance under pressure of the first and second electrode sheets according to the present invention, and FIGS. 3 (a) to (d) show the relationship between the polarization electrode and the collector electrode. FIG. 4 is a schematic diagram showing a process of assembling the composite electrode, and FIG. 4 is a schematic diagram showing a bonding state between the dispersed resin, the elastic graphite particles, and the activated carbon particles. DESCRIPTION OF SYMBOLS 1 ... Collecting electrode sheet, 2 ... Polarizable electrode 3 ... Composite electrode 4, ... Dispersed resin 5 ... Elastic graphite particles, 6 ... Activated carbon particles
Claims (1)
と弾性黒鉛体の微粒子とを含む材料にバインダー樹脂を
分散して成形した分極性電極シートと、弾性黒鉛体の微
粒子を含む材料にバインダー樹脂を分散して成形した集
電極用シートとを、加圧により積層結合してなる複合電
極シート。1. A polarizable electrode sheet formed by dispersing a binder resin in a material containing activated carbon fine particles having a specific surface area of 3000 to 5000 m 2 / g and elastic graphite fine particles, and a material containing elastic graphite fine particles. A composite electrode sheet obtained by laminating and bonding under pressure pressure a sheet for collector formed by dispersing a binder resin into a sheet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33758490A JP3251580B2 (en) | 1990-11-30 | 1990-11-30 | Electrode sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33758490A JP3251580B2 (en) | 1990-11-30 | 1990-11-30 | Electrode sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04202792A JPH04202792A (en) | 1992-07-23 |
JP3251580B2 true JP3251580B2 (en) | 2002-01-28 |
Family
ID=18310027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP33758490A Expired - Fee Related JP3251580B2 (en) | 1990-11-30 | 1990-11-30 | Electrode sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3251580B2 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1208168A (en) * | 1980-10-31 | 1986-07-22 | Eltech Systems Corporation | Producing electrode active layer from active carbon particles and fibrillated polytetrafluoroethylene |
JPH0766812B2 (en) * | 1985-07-24 | 1995-07-19 | 政廣 渡辺 | Gas diffusion electrode for fuel cells |
JPS62207894A (en) * | 1986-03-08 | 1987-09-12 | Choichi Furuya | Gas diffusing electrode |
JPH0766809B2 (en) * | 1986-09-03 | 1995-07-19 | 田中貴金属工業株式会社 | Raw material powder for gas diffusion electrode |
JPS62256378A (en) * | 1986-04-30 | 1987-11-09 | Tanaka Kikinzoku Kogyo Kk | Gas diffusion electrode |
JPS62287571A (en) * | 1986-06-05 | 1987-12-14 | Denki Kagaku Kogyo Kk | Material for gas diffusion electrode |
JPS6369148A (en) * | 1986-09-10 | 1988-03-29 | Denki Kagaku Kogyo Kk | Material for gas diffusion electrode |
JP2588538B2 (en) * | 1987-08-07 | 1997-03-05 | 田中貴金属工業株式会社 | Manufacturing method of gas diffusion electrode |
-
1990
- 1990-11-30 JP JP33758490A patent/JP3251580B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH04202792A (en) | 1992-07-23 |
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