JP2000164466A - Manufacture of electrode used for capacitor or cell - Google Patents
Manufacture of electrode used for capacitor or cellInfo
- Publication number
- JP2000164466A JP2000164466A JP10335936A JP33593698A JP2000164466A JP 2000164466 A JP2000164466 A JP 2000164466A JP 10335936 A JP10335936 A JP 10335936A JP 33593698 A JP33593698 A JP 33593698A JP 2000164466 A JP2000164466 A JP 2000164466A
- Authority
- JP
- Japan
- Prior art keywords
- current collector
- intermediate film
- carbon
- electrode
- collector
- 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.)
- Pending
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
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はキャパシタまたは電
池に使用される電極の製造方法に関する。The present invention relates to a method for manufacturing an electrode used for a capacitor or a battery.
【０００２】[0002]
【従来の技術】キャパシタまたは電池が提供されてい
る。電池は化学変化で生成した電荷を放出するものであ
る。キャパシタは電荷の充電・放電を繰り返すものであ
る。キャパシタまたは電池においては、アルミニウム系
等の導電材料で形成した集電体に、活物質層が被覆され
ている。BACKGROUND OF THE INVENTION Capacitors or batteries are provided. A battery discharges electric charge generated by a chemical change. The capacitor repeatedly charges and discharges electric charges. In a capacitor or a battery, an active material layer is coated on a current collector formed of a conductive material such as an aluminum-based material.
【０００３】[0003]
【発明が解決しようとする課題】産業界では、キャパシ
タまたは電池の性能の一層の向上が要請されている。本
発明は上記した実情に鑑みなされたものであり、キャパ
シタまたは電池の性能の向上に有利なキャパシタまたは
電池に使用される電極の製造方法を提供することを課題
とする。There is a need in the industry for further improvements in the performance of capacitors or batteries. The present invention has been made in view of the above circumstances, and has as its object to provide a method for manufacturing an electrode used in a capacitor or battery which is advantageous for improving the performance of the capacitor or battery.
【０００４】[0004]
【課題を解決するための手段】本発明者は上記した課題
のもとに鋭意開発をすすめた。そして、導電材料で形成
された集電体に、カーボンの中間膜、または、導電材料
よりも貴な金属の中間膜を設け、その中間膜の上に活物
質層を被覆すれば、キャパシタまたは電池の長期にわた
る性能の向上に有利であることを知見し、試験で確認
し、本発明方法を完成した。Means for Solving the Problems The present inventor has made intensive developments based on the above-mentioned problems. A current collector formed of a conductive material is provided with an intermediate film of carbon or an intermediate film of a metal that is more noble than the conductive material, and an active material layer is coated on the intermediate film, so that a capacitor or a battery can be obtained. Was found to be advantageous for long-term performance improvement, and confirmed by tests, thus completing the method of the present invention.
【０００５】キャパシタまたは電池の性能の向上に有利
である理由は、次のように推察される。即ち、キャパシ
タまたは電池が劣化する要因の一つとして、使用期間が
長くなると、集電体を構成する導電材料が電解液に溶出
し、溶出に基づく集電体の表面性状の劣化が考えられ
る。図１０に示すように、活物質層２００の構成成分
（例えば活性炭やカーボンブラック）は一般的に粉末粒
子状であり、その構成成分が集電体１００と接触してい
る部位は、微視的にみれば、点接触状態またはこれに近
い形態と考えられる。そのため、電荷の移動部位の面積
が小さく、電流密度が部分的に高くなり、集電体１００
の溶出を誘発すると考えられる。従って使用初期におい
ては、図８に模式的に示すように集電体１００と活物質
層２００との密着性が良好であったとしても、電解液の
存在下において、集電体１００を構成している導電材料
の溶出が過剰に進行すると、図９に模式的に示すように
両者の間に微小隙間３００が生成し、集電体１００と活
物質層２００との間の密着性が低下する。これにより活
物質層２００と集電体１００との界面における電気抵抗
の増大を誘発する。これがキャパシタや電池の性能を低
下させる要因の一つとなると、本発明者は推察してい
る。[0005] The reason why the performance of the capacitor or the battery is improved is presumed as follows. That is, as one of the factors that cause deterioration of the capacitor or the battery, when the use period is prolonged, the conductive material constituting the current collector elutes into the electrolytic solution, and the surface properties of the current collector are deteriorated due to the elution. As shown in FIG. 10, components of the active material layer 200 (for example, activated carbon and carbon black) are generally in the form of powder particles, and a portion where the components are in contact with the current collector 100 is microscopically. In view of the above, it is considered that the state is a point contact state or a form close thereto. Therefore, the area of the charge transfer site is small, the current density is partially increased, and the current collector 100
It is thought to induce the elution of Therefore, in the initial stage of use, even if the current collector 100 and the active material layer 200 have good adhesion as schematically shown in FIG. 8, the current collector 100 is formed in the presence of the electrolyte. If the elution of the conductive material progresses excessively, a minute gap 300 is generated between the two, as schematically shown in FIG. 9, and the adhesion between the current collector 100 and the active material layer 200 is reduced. . This induces an increase in electric resistance at the interface between the active material layer 200 and the current collector 100. The present inventors presume that this is one of the factors that degrade the performance of the capacitor and the battery.
【０００６】そこで本発明者は、導電材料で形成された
集電体１００に、カーボンの中間膜、または、導電材料
よりも貴な金属の中間膜を設け、その上に活物質層２０
０を被覆すれば、使用期間が長くなったとしても、集電
体１００の溶出を抑制でき、キャパシタまたは電池の長
期にわたる性能の向上に有利であることを知見し、試験
で確認し、本発明方法を完成した。Therefore, the present inventor provided an intermediate film of carbon or an intermediate film of a metal which is more noble than the conductive material on the current collector 100 formed of the conductive material, and provided thereon the active material layer 20.
It has been found that coating with 0 can suppress elution of the current collector 100 even when the use period is prolonged, which is advantageous for improving the performance of a capacitor or a battery over a long period of time. Completed the method.
【０００７】すなわち、本発明に係るキャパシタまたは
電池に使用される電極の製造方法は、導電材料で形成さ
れた集電体に、カーボンの中間膜、または、導電材料よ
りも貴な金属の中間膜を設け、その上に活物質層を被覆
することを特徴とするものである。That is, according to the method of manufacturing an electrode used for a capacitor or a battery according to the present invention, a current collector formed of a conductive material is provided with a carbon intermediate film or a metal intermediate film nobler than the conductive material. And an active material layer is coated thereon.
【０００８】[0008]
【発明の実施の形態】集電体は箔状のものを採用でき
る。集電体の厚みはキャパシタまたは電池の種類に応じ
て適宜選択でき、例えば５〜２００μｍ、殊に１０〜１
００μｍを採用できる。集電体は導電材料で形成されて
いる。導電材料としてはアルミニウム系を採用できる。
アルミニウム系としては、純アルミニウム、アルミニウ
ム合金を採用できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS A foil-like current collector can be employed. The thickness of the current collector can be appropriately selected depending on the type of the capacitor or the battery, and is, for example, 5 to 200 μm, particularly 10 to 1 μm.
00 μm can be adopted. The current collector is formed of a conductive material. Aluminum can be used as the conductive material.
Pure aluminum and aluminum alloy can be adopted as the aluminum-based material.
【０００９】本発明方法においては、カーボンの中間
膜、または、導電材料よりも貴な金属の中間膜を集電体
に設ける。導電材料よりも貴な金属としては、導電材料
がアルミ系である場合には、金、白金、Ｓｎ、Ｃｕ、Ｆ
ｅ、Ａｇ、Ｎｉ、Ｚｎなどがあげられる。中間膜として
は、蒸着、スパッタリング等の物理的成膜手段で形成す
ることができるが、これに限定されるものではない。中
間膜の厚みは、電解液の種類、中間層の材質などを考慮
して適宜選択でき、上限値としては例えば１０００ｎｍ
または５００ｎｍを採用でき、下限値としては例えば１
０ｎｍまたは３０ｎｍを採用できる。ただしこれに限定
されるものではない。In the method of the present invention, an intermediate film of carbon or an intermediate film of a metal which is more noble than a conductive material is provided on the current collector. When the conductive material is an aluminum-based material, gold, platinum, Sn, Cu, F
e, Ag, Ni, Zn and the like. The intermediate film can be formed by physical film forming means such as vapor deposition and sputtering, but is not limited thereto. The thickness of the intermediate film can be appropriately selected in consideration of the type of the electrolytic solution, the material of the intermediate layer, and the like.
Alternatively, 500 nm can be adopted, and the lower limit is, for example, 1
0 nm or 30 nm can be adopted. However, it is not limited to this.
【００１０】本発明方法においては、集電体の全表面に
中間膜を生成することができる。あるいは、集電体のう
ち電解液と触れる部位にのみ中間膜を生成することがで
きる。集電体のうち電解液と触れない部位にマスキング
を適宜施すこともできる。本発明方法においては、中間
膜の上に、キャパシタまたは電池の活物質層を被覆す
る。[0010] In the method of the present invention, an intermediate film can be formed on the entire surface of the current collector. Alternatively, the intermediate film can be formed only in a portion of the current collector that comes into contact with the electrolytic solution. Masking may be appropriately performed on a portion of the current collector that does not come into contact with the electrolytic solution. In the method of the present invention, an active material layer of a capacitor or a battery is coated on the intermediate film.
【００１１】[0011]
【実施例】以下、本発明の実施例を説明する。本実施例
は、電気二重層キャパシタとも呼ばれるキャパシタを適
用する例である。まず、導電材料であるアルミニウム
（Ａｌ：９９．９９重量％）で形成した箔状の所定サイ
ズの集電体１（図１に模式化して示す）を用いる。集電
体１は上端部に耳部１ｓをもつ。集電体１は、幅が５ｃ
ｍ、耳部１ｓを除く高さが５．５ｃｍ、厚みが約５０μ
ｍである。活物質塗布部は５ｃｍ×５ｃｍである。Embodiments of the present invention will be described below. The present embodiment is an example in which a capacitor called an electric double layer capacitor is applied. First, a foil-shaped current collector 1 (schematically shown in FIG. 1) formed of aluminum (Al: 99.99% by weight) as a conductive material and having a predetermined size is used. The current collector 1 has an ear 1s at the upper end. Current collector 1 has a width of 5c
m, height excluding ears 1s 5.5cm, thickness about 50μ
m. The active material application part is 5 cm × 5 cm.
【００１２】次に、図３に示すように、先端部を尖らせ
たカーボン電極８０ｋと棒状電極８０ｍとをもつ蒸着装
置８０を用い、蒸着装置８０の容器８１の真空室８２に
集電体１を収容した状態で、集電体１の表面にカーボン
の中間膜２を成膜する（図２は模式化して示す）。カー
ボンの中間膜２の厚みは数ｎｍ、つまり２〜７ｎｍ程度
である。本実施例においては微小なカーボン粒子が集電
体１に堆積する。カーボン電極８０ｋの先端部が尖って
いるため、カーボン電極８０ｋと棒状電極８０ｍとが接
触する部位の接触面積が小さくなり、接触する部位での
電気抵抗が大きくなり、発熱量が大きくなるためと推察
される。Next, as shown in FIG. 3, a current collector 1 is placed in a vacuum chamber 82 of a container 81 of the vapor deposition device 80 using a vapor deposition device 80 having a carbon electrode 80k having a sharpened tip and a rod-shaped electrode 80m. Is stored, a carbon intermediate film 2 is formed on the surface of the current collector 1 (FIG. 2 is schematically shown). The thickness of the carbon intermediate film 2 is several nm, that is, about 2 to 7 nm. In this embodiment, fine carbon particles are deposited on the current collector 1. Because the tip of the carbon electrode 80k is sharp, the contact area of the portion where the carbon electrode 80k and the rod-shaped electrode 80m are in contact is reduced, the electrical resistance at the contacted portion is increased, and the amount of heat generated is estimated to be large. Is done.
【００１３】その後、カーボンの中間膜２を成膜した集
電体１の表面（表裏）に活物質層３を被覆する（図１に
模式化して示す）。本実施例においては、活物質である
活性炭（粒径：１０μｍ以下）と、導電材であるカーボ
ンブラックと、結着剤であるメチルセルロースとを、所
定の割合で混合したペースト状の混合材料を用い、この
混合材料を集電体１の中間膜２に被覆することにより、
活物質層３（厚み：２０〜１００μｍ）は形成されてい
る。活性炭は、表面積が大きく、電気二重層を効率よく
生成させ得る。Thereafter, the surface (front and back) of the current collector 1 on which the carbon intermediate film 2 is formed is coated with an active material layer 3 (schematically shown in FIG. 1). In this example, a paste-like mixed material in which activated carbon (particle size: 10 μm or less) as an active material, carbon black as a conductive material, and methylcellulose as a binder were mixed at a predetermined ratio was used. By coating the mixed material on the intermediate film 2 of the current collector 1,
The active material layer 3 (thickness: 20 to 100 μm) is formed. Activated carbon has a large surface area and can efficiently generate an electric double layer.
【００１４】本実施例によれば、集電体１に、カーボン
の薄膜状の中間膜２を設け、その上に活物質層３を被覆
している。このような本実施例においては、後述する試
験例においても示すように、集電体１が電解液に溶出す
ることが抑制される。故に、使用期間が長くなっても、
キャパシタの性能劣化を抑制するのに有利となる。 （試験例）本発明者が行った試験例を説明する。この試
験では、アルミニウム（Ａｌ：９９．９９重量％）で形
成した箔状の集電体１を用いた。集電体１の基本サイズ
は、幅が３ｃｍ、長さが３ｃｍ、厚みが約５０μｍであ
った。上記した箔状の集電体１の両方（表裏）の表面に
カーボンの中間膜２（厚み：数ｎｍ）を蒸着で成膜し
た。次にペースト状の混合材料を集電体１の中間膜２に
塗布し、前記した活物質層３（厚み：３０μｍ）を被覆
し、電極Ａを得た。According to the present embodiment, the current collector 1 is provided with the carbon thin film-like intermediate film 2 and the active material layer 3 is coated thereon. In this embodiment, as shown in a test example described later, elution of the current collector 1 into the electrolytic solution is suppressed. Therefore, even if the use period becomes long,
This is advantageous for suppressing the performance degradation of the capacitor. (Test Example) A test example performed by the present inventors will be described. In this test, a foil-shaped current collector 1 formed of aluminum (Al: 99.99% by weight) was used. The basic size of the current collector 1 was 3 cm in width, 3 cm in length, and about 50 μm in thickness. A carbon intermediate film 2 (thickness: several nm) was formed on both surfaces (front and back) of the foil-shaped current collector 1 by vapor deposition. Next, a paste-like mixed material was applied to the intermediate film 2 of the current collector 1 to cover the above-mentioned active material layer 3 (thickness: 30 μm), thereby obtaining an electrode A.
【００１５】ペースト状の混合材料は、活性炭（１０μ
ｍ以下）、カーボンブラック、メチルセルロースを重量
比で２３：３：３の割合で混合し、更に水を加えて形成
した。このように形成した電極Ａを、正極および負極と
して、図４に概念図を示すラボセルに組み込んだ。ラボ
セルは、キャパシタ用電解液７０を収容したガラス製の
内容器７２と、ガラス製の外容器と７３、アルゴンガス
が封入される封入室７４と、正極と負極とを仕切るセパ
レータ７５とをもつ。The paste-like mixed material is activated carbon (10 μm).
m), carbon black and methylcellulose were mixed at a weight ratio of 23: 3: 3, and water was further added to form the mixture. The electrode A thus formed was incorporated as a positive electrode and a negative electrode into a laboratory cell whose conceptual diagram is shown in FIG. The laboratory cell has a glass inner container 72 containing an electrolytic solution 70 for a capacitor, an outer container 73 made of glass, a sealing chamber 74 in which argon gas is sealed, and a separator 75 for separating a positive electrode and a negative electrode.
【００１６】このラボセルを用いて、充放電試験を行
い、Ａｌ溶出量、つまり電解液に含まれるＡｌ量をプラ
ズマ発光分析（ＩＣＰ）により測定した。充放電試験
は、０〜３．５Ｖのサイクル（０．５サイクル／分）を
１時間行った。ラボセルに収容されたキャパシタ用電解
液７０は、溶媒がプロピレンカーボネイト、電解質が
（Ｃ 2Ｈ5）4ＮＢＦ4、電解質の濃度が１ｍｏｌ／リット
ルとした。A charge / discharge test is performed using this lab cell.
The amount of Al elution, that is, the amount of Al contained in the electrolyte
Measured by zuma emission analysis (ICP). Charge / discharge test
Is a cycle of 0 to 3.5 V (0.5 cycles / minute)
Performed for 1 hour. Electrolysis for capacitors housed in lab cells
In the liquid 70, the solvent is propylene carbonate, and the electrolyte is
(C TwoHFive)FourNBFFour, Electrolyte concentration is 1mol / litre
And
【００１７】別の試験例として、前記したカーボンの中
間膜２に代えて、金の中間膜２Ｂを成膜した。成膜にあ
たり、真空室９０ａをもつ成膜装置９０を用い、金で形
成したターゲット９１（負極）を真空室９０ａ内の集電
体１（正極）に対面させるとともに、真空室９０ａを高
真空雰囲気（１〜１０Ｐａ）し、ターゲット９１と集電
体１との間にグロー放電９２を発生させ、ターゲット９
１から発生した金の微粒子を集電体１に堆積させて中間
膜２Ｂを成膜した。なお集電体１を裏がえして集電体１
の表裏の双方に成膜した。As another test example, a gold intermediate film 2B was formed in place of the carbon intermediate film 2 described above. In forming the film, a target 91 (negative electrode) formed of gold is opposed to the current collector 1 (positive electrode) in the vacuum chamber 90a using a film forming apparatus 90 having a vacuum chamber 90a, and the vacuum chamber 90a is set in a high vacuum atmosphere. (1 to 10 Pa), a glow discharge 92 is generated between the target 91 and the current collector 1, and the target 9
The gold fine particles generated from No. 1 were deposited on the current collector 1 to form an intermediate film 2B. The current collector 1 is turned over and the current collector 1
Was formed on both sides.
【００１８】成膜装置９０の付属メータ（電流値から換
算）によれば、金の中間膜２Ｂの厚みは約３０ｎｍであ
った。その後に活物質層３を前述と同様な条件で被覆
し、電極Ｂを形成した（図６参照）。この電極Ｂについ
ても、同様にラボセルに組み込み、充放電試験を行い、
電解液に含まれているＡｌ量をＩＣＰ分析により測定し
た。According to an attached meter (converted from a current value) of the film forming apparatus 90, the thickness of the gold intermediate film 2B was about 30 nm. Thereafter, the active material layer 3 was coated under the same conditions as described above to form an electrode B (see FIG. 6). This electrode B was similarly incorporated into a laboratory cell, and subjected to a charge / discharge test.
The amount of Al contained in the electrolyte was measured by ICP analysis.
【００１９】また比較例として、同様な箔状の集電体を
用い、中間膜を形成することなく、その集電体に活物質
層を被覆し、電極Ｃを形成した。この電極Ｃについて
も、同様にラボセルに組み込み、充放電試験を行い、電
解液に含まれているＡｌ量をＩＣＰ分析により測定し
た。試験結果を表１に示す。表１に示すように、カーボ
ンの中間膜を成膜した電極Ａの場合にはＡｌ溶出量４．
６ｐｐｍであり、Ａｌ溶出量が抑えられていた。金の中
間膜を成膜した電極Ｂの場合にはＡｌ溶出量０．２ｐｐ
ｍであり、Ａｌ溶出量が一層抑えられていた。中間膜が
形成されていない比較例の電極Ｃの場合には、１３．３
ｐｐｍであり、Ａｌ溶出量が大きかった。As a comparative example, an electrode C was formed by covering the current collector with an active material layer without forming an intermediate film, using the same foil-like current collector. This electrode C was similarly assembled in a laboratory cell, subjected to a charge / discharge test, and the amount of Al contained in the electrolyte was measured by ICP analysis. Table 1 shows the test results. As shown in Table 1, in the case of the electrode A on which an intermediate film of carbon was formed, the elution amount of Al was 3.
6 ppm, and the amount of Al eluted was suppressed. In the case of the electrode B having a gold intermediate film formed thereon, the amount of Al eluted is 0.2 pp.
m, and the Al elution amount was further suppressed. In the case of the electrode C of the comparative example where no intermediate film was formed, 13.3 was used.
ppm, and the Al elution amount was large.
【００２０】[0020]
【表１】 （適用例）本適用例は、電気二重層キャパシタとも呼ば
れるキャパシタを適用した例である。図７はその概念図
を示す。図７に示すように、キャパシタ６０は、電解液
６１を収容した密閉容器６２と、正極用の箔状をなす集
電体６３と、集電体６３に被覆された正極用活物質層６
４と、負極用の箔状をなす集電体６５と、集電体６５に
被覆された負極用活物質層６６と、セパレータ６７と、
正極用の集電体６３につながる正極端子６８と、負極用
の集電体６５につながる負極端子６９とを備えている。
正極用の集電体６３と正極用活物質層６４とで正極７Ａ
が形成されている。負極用の集電体６５と負極用活物質
層６６とで負極７Ｂが形成されている。多数個の正極７
Ａ及び多数個の負極７Ｂがその厚み方向において積層さ
れている。図７は概念図のため、個数を省略している。
本適用例においても、正極用の集電体６３、負極用の集
電体６５には、カーボンの中間膜、あるいは、金の中間
膜が成膜されている。[Table 1] (Application Example) This application example is an example in which a capacitor called an electric double layer capacitor is applied. FIG. 7 shows a conceptual diagram thereof. As shown in FIG. 7, the capacitor 60 includes a sealed container 62 containing an electrolytic solution 61, a current collector 63 in the form of a foil for the positive electrode, and a positive electrode active material layer 6 coated on the current collector 63.
4, a negative electrode foil-like current collector 65, a negative electrode active material layer 66 coated on the current collector 65, a separator 67,
A positive electrode terminal 68 connected to the positive electrode current collector 63 and a negative electrode terminal 69 connected to the negative electrode current collector 65 are provided.
The current collector 63 for the positive electrode and the active material layer 64 for the positive electrode
Are formed. The negative electrode current collector 65 and the negative electrode active material layer 66 form the negative electrode 7B. Many positive electrodes 7
A and many negative electrodes 7B are stacked in the thickness direction. Since FIG. 7 is a conceptual diagram, the number is omitted.
Also in this application example, an intermediate film of carbon or an intermediate film of gold is formed on the current collector 63 for the positive electrode and the current collector 65 for the negative electrode.
【００２１】[0021]
【発明の効果】本発明方法によれば、使用期間が長くな
っても、集電体を構成する導電材料の電解液への溶出
を、従来技術に比較して抑制できる。そのため従来技術
に比較して、集電体と活物質層との間における電気抵抗
の増大を抑制するのに有利となる。故に使用期間が長く
なっても、キャパシタまたは電池の性能劣化を抑制する
のに有利である。According to the method of the present invention, elution of the conductive material constituting the current collector into the electrolytic solution can be suppressed as compared with the prior art, even when the use period is long. Therefore, it is advantageous in suppressing an increase in electric resistance between the current collector and the active material layer as compared with the related art. Therefore, it is advantageous in suppressing the performance deterioration of the capacitor or the battery even when the use period becomes long.
【図１】電極の製造過程を模式的に示す側面図である。FIG. 1 is a side view schematically showing a manufacturing process of an electrode.
【図２】カーボンの中間膜をもつ集電体に活物質層を被
覆した状態を模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing a state in which a current collector having a carbon intermediate film is coated with an active material layer.
【図３】カーボンの中間膜を集電体に成膜する過程を示
す構成図である。FIG. 3 is a configuration diagram showing a process of forming an intermediate carbon film on a current collector.
【図４】試験で用いたラボセルの概念図である。FIG. 4 is a conceptual diagram of a laboratory cell used in the test.
【図５】金の中間膜をもつ集電体に成膜する過程を模式
的に示す構成図である。FIG. 5 is a configuration diagram schematically showing a process of forming a film on a current collector having a gold intermediate film.
【図６】カーボンの中間膜をもつ集電体に活物質層を被
覆した状態を模式的に示す断面図である。FIG. 6 is a cross-sectional view schematically showing a state where a current collector having a carbon intermediate film is coated with an active material layer.
【図７】キャパシタに適用した状態の概念図である。FIG. 7 is a conceptual diagram of a state applied to a capacitor.
【図８】従来技術に係り、集電体に活物質層を被覆した
状態を模式的に示す断面図である。FIG. 8 is a cross-sectional view schematically showing a state where a current collector is covered with an active material layer according to a conventional technique.
【図９】従来技術に係り、集電体と活物質層との間に隙
間が生成した状態を模式的に示す断面図である。FIG. 9 is a cross-sectional view schematically showing a state in which a gap is generated between a current collector and an active material layer according to a conventional technique.
【図１０】活物質層を構成している活性炭等が集電体に
接触している形態を想像して示す構成図である。FIG. 10 is a configuration diagram imagining a form in which activated carbon or the like constituting an active material layer is in contact with a current collector.
図中、１は集電体、２,２Ｂは中間膜、３は活物質層を
示す。In the figure, 1 indicates a current collector, 2, 2B indicates an intermediate film, and 3 indicates an active material layer.
Claims (1)
の中間膜または前記導電材料よりも貴な金属の中間膜を
設け、その上に活物質層を被覆することを特徴とするキ
ャパシタまたは電池に使用される電極の製造方法。1. A capacitor comprising: a current collector formed of a conductive material; and a carbon intermediate film or an intermediate film of a metal which is more noble than the conductive material, and an active material layer is coated thereon. Or a method for producing an electrode used in a battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10335936A JP2000164466A (en) | 1998-11-26 | 1998-11-26 | Manufacture of electrode used for capacitor or cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10335936A JP2000164466A (en) | 1998-11-26 | 1998-11-26 | Manufacture of electrode used for capacitor or cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000164466A true JP2000164466A (en) | 2000-06-16 |
Family
ID=18294012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10335936A Pending JP2000164466A (en) | 1998-11-26 | 1998-11-26 | Manufacture of electrode used for capacitor or cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000164466A (en) |
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|---|---|---|---|---|
| WO2005069321A1 (en) * | 2004-01-19 | 2005-07-28 | Matsushita Electric Industrial Co., Ltd. | Electric double-layer capacitor, its manufacturing method, and electronic device using same |
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| JP2005524974A (en) * | 2002-05-03 | 2005-08-18 | エプコス アクチエンゲゼルシャフト | Electrode and method for producing the electrode |
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