JPH01298713A - Manufacture of cathode foil for electrolytic capacitor - Google Patents
Manufacture of cathode foil for electrolytic capacitorInfo
- Publication number
- JPH01298713A JPH01298713A JP12972388A JP12972388A JPH01298713A JP H01298713 A JPH01298713 A JP H01298713A JP 12972388 A JP12972388 A JP 12972388A JP 12972388 A JP12972388 A JP 12972388A JP H01298713 A JPH01298713 A JP H01298713A
- Authority
- JP
- Japan
- Prior art keywords
- oxide film
- aluminum
- metal
- cathode foil
- metal oxide
- 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
- 239000011888 foil Substances 0.000 title claims abstract description 20
- 239000003990 capacitor Substances 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 12
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 12
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 12
- 239000010936 titanium Substances 0.000 claims abstract description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 239000011651 chromium Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000002747 voluntary effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は電解コンデンサ用陰極箔の１２遣方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming a cathode foil for an electrolytic capacitor.
電解コンデンサは、陽極箔と陰極箔とをセパレータを挾
んで巻回してなるコンデンサ素子を備えているが、その
静電容量の大きさは主として陰極箔の静電容量に依存す
るが、陰極箔の静電容量にも左右される。An electrolytic capacitor has a capacitor element formed by winding an anode foil and a cathode foil with a separator in between.The size of the capacitance mainly depends on the capacitance of the cathode foil, but It also depends on capacitance.
この陰極箔の静電容量を増大させるため、従来ではエツ
チング処理により、アルミニウム基材の表面積を拡大す
るようにしている。In order to increase the capacitance of this cathode foil, conventionally, the surface area of the aluminum base material has been expanded by etching treatment.
しかしながら、エツチングにより波面するにしても例え
ば機械的強度等の面からして限界がある。However, even if the wave surface is formed by etching, there is a limit in terms of mechanical strength and the like.
この発明は上記従来の事情に鑑みなされたもので、その
目的は、比較的簡単に高容量の陰極箔を得ることができ
るようにした電解コンデンサ用陰極箔を提供することに
ある。The present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is to provide a cathode foil for an electrolytic capacitor that allows a cathode foil with a high capacity to be obtained relatively easily.
上記目的を達成するため、この発明においては。 In order to achieve the above object, in this invention.
アルミニウムからなる基材の表面に、誘電率の低い第１
の金属酸化皮膜を形成したのち、その金属酸化皮膜りに
誘電率の高い第２の金属酸化皮膜を形成することを特徴
としている。A first layer with a low dielectric constant is placed on the surface of the base material made of aluminum.
The method is characterized in that after forming a metal oxide film, a second metal oxide film having a high dielectric constant is formed on the metal oxide film.
使用する基材としては、好ましくはエツチング処理した
ものが用いられるが、未エツチングの基材であってもよ
い。The base material used is preferably an etched base material, but an unetched base material may also be used.
第１の金属には例えばアルミニウムが用いられ。For example, aluminum is used as the first metal.
第２の金属としてはチタンが用いられる。すなわち、基
材の表面にまずアルミニウムを蒸着してその金属酸化皮
膜を形成したのち、さらにその上にチタンを蒸着する。Titanium is used as the second metal. That is, aluminum is first vapor-deposited on the surface of the base material to form a metal oxide film thereon, and then titanium is further vapor-deposited thereon.
ちなみに、チタンよりなる誘電性酸化皮膜の誘電率は、
アルミニウムの誘電性酸化皮膜に比べて約１０倍ときわ
めて高い値を示す。なお、アルミニウムに代えてクロム
を用いてもよい。By the way, the dielectric constant of a dielectric oxide film made of titanium is
This value is extremely high, about 10 times that of aluminum dielectric oxide film. Note that chromium may be used instead of aluminum.
」１記のようにこの発明によれば、誘電性酸化皮喚状態
において異なる誘′市率を示す２種類の金属を用意し、
アルミニウム基材の表面に、誘電圧の低い方を先に蒸着
し、次いで誘電率の高い金属を蒸着することにより、高
容量の陰極箔が製造される。According to the present invention, two types of metals exhibiting different permittivity in the dielectric oxide skin state are prepared, as described in 1.
A high-capacity cathode foil is manufactured by first depositing a metal with a lower dielectric voltage on the surface of an aluminum base material, and then depositing a metal with a higher dielectric constant.
以下、この発明の詳細な説明する。なお、参考までに、
■純度９９．７％、厚さ２０μｍの未エツチングアルミ
ニウム箔の静電容量は２．５μＦｌｃｗｔであり、■従
来用いられているエツチング箔（厚さ２０μｌ１１）の
静電容量は１００μト“／ｄである。The present invention will be explained in detail below. For reference,
■ The capacitance of an unetched aluminum foil with a purity of 99.7% and a thickness of 20 μm is 2.5 μFlcwt. ■ The capacitance of a conventionally used etched foil (thickness 20 μl11) is 100 μt/d. be.
〈実施例１〉
Ｆ−記■の純度９９．７％、厚さ２０μｍの未エツチン
グアルミニウム箔にアルミニウムを１μ慣の厚さに蒸着
し、その上にチタンを０．１μｍ厚に蒸着したところ、
その静電容量は２００μＦ／ａｉであった。<Example 1> Aluminum was vapor-deposited to a thickness of 1 μm on an unetched aluminum foil with a purity of 99.7% and a thickness of 20 μm, and titanium was vapor-deposited on top of it to a thickness of 0.1 μm.
Its capacitance was 200 μF/ai.
〈実施例２〉
上記■のエツチングされたアルミニウム箔に上記実施例
１と同様にアルミニウムを１μｍの厚さに蒸着し、その
上にチタンを０．１μｍ厚に蒸着したところ、その静電
容量は４００μＦ／ｃｎｆであった。<Example 2> As in Example 1 above, aluminum was vapor-deposited to a thickness of 1 μm on the etched aluminum foil of (■) above, and titanium was vapor-deposited on top of it to a thickness of 0.1 μm, and the capacitance was It was 400μF/cnf.
〈実施例３〉
上記■のエツチングされたアルミニウム箔にクロムを１
μ鴇の厚さに蒸着し、その上にチタンを０．１μｍ厚に
蒸着したところ、その静電容量は４５０μド／ｄであっ
た。<Example 3> Add 1 chromium to the etched aluminum foil of (■) above.
When titanium was deposited to a thickness of μm and titanium was deposited on top of it to a thickness of 0.1 μm, the capacitance was 450 μd/d.
このように、この発明によれば、静電容量が従来に比べ
かなり高められることが確められた。As described above, it has been confirmed that according to the present invention, the capacitance is considerably increased compared to the conventional one.
特許出願人 エルナー株式会社
代理人 弁理士 大 原 拓 也手続補正書（
自発）
昭和６３年６月２７日
特許庁長官 吉 １）文 毅 殿
１、事件の表示
昭和６３年特許願第１２９７２３号
２、発明の名称
電解コンデンサ用陰極箔の製造方法
３、補正をする者
事件との関係 特許出願人
神奈川県藤沢市辻堂新町２丁目２番１号エルナー株式会
社
代表考細田喜代司
４、代理人（〒１０２）
５、補正命令の日付（自 発）
昭和 年 月 日（発送日；同年 月 日）６、補正
の対象
明細に中の「発明の詳細な説明」の欄
７、補正の内容
（１）明細書、第３頁第１７行の「誘電圧」をＩｆ’誘
圧重圧率訂正する。Patent Applicant Elnor Co., Ltd. Agent Patent Attorney Takuya Ohara Procedural Amendment (
Voluntary) June 27, 1988 Director General of the Japan Patent Office Yoshi 1) Takeshi Moon 1, Indication of the case Patent Application No. 129723 of 1988 2, Name of the invention Method for manufacturing cathode foil for electrolytic capacitors 3, Person making the amendment Relationship to the case Patent applicant: 2-2-1 Tsujido Shinmachi, Fujisawa City, Kanagawa Prefecture Elnor Co., Ltd. Representative Kiyoshi Kosoda 4, Agent (102) 5 Date of amendment order (voluntary) Showa 1920, Month, Day (shipped) (date; same year, month, day) 6, "Detailed Description of the Invention" column 7 in the specification to be amended, content of the amendment (1) Specification, "dielectric voltage" in page 3, line 17. Correct the pressure ratio.
以上that's all
Claims (3)
い第１の金属酸化皮膜を形成したのち、その金属酸化皮
膜上に誘電率の高い第２の金属酸化皮膜を形成すること
を特徴とする電解コンデンサ用陰極箔の製造方法。(1) A first metal oxide film with a low dielectric constant is formed on the surface of a base material made of aluminum, and then a second metal oxide film with a high dielectric constant is formed on the metal oxide film. A method for manufacturing cathode foil for electrolytic capacitors.
の金属はチタンである請求項１記載の電解コンデンサ用
陰極箔の製造方法。(2) The first metal is aluminum, and the second metal is aluminum.
2. The method for producing a cathode foil for an electrolytic capacitor according to claim 1, wherein the metal is titanium.
はチタンである請求項１記載の電解コンデンサ用陰極箔
の製造方法。(3) The method for manufacturing a cathode foil for an electrolytic capacitor according to claim 1, wherein the first metal is chromium and the second metal is titanium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12972388A JPH01298713A (en) | 1988-05-27 | 1988-05-27 | Manufacture of cathode foil for electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12972388A JPH01298713A (en) | 1988-05-27 | 1988-05-27 | Manufacture of cathode foil for electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01298713A true JPH01298713A (en) | 1989-12-01 |
Family
ID=15016605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12972388A Pending JPH01298713A (en) | 1988-05-27 | 1988-05-27 | Manufacture of cathode foil for electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01298713A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000299255A (en) * | 1999-04-16 | 2000-10-24 | Nichicon Corp | Cathode foil for aluminum electrolytic capacitor |
| JP2007535145A (en) * | 2004-04-25 | 2007-11-29 | アクタール リミテッド | Integrated separator for electrolytic capacitors |
| CN105513802A (en) * | 2015-12-24 | 2016-04-20 | 南通海星电子股份有限公司 | Manufacturing method of composite dielectric film-containing low-voltage formed foil |
-
1988
- 1988-05-27 JP JP12972388A patent/JPH01298713A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000299255A (en) * | 1999-04-16 | 2000-10-24 | Nichicon Corp | Cathode foil for aluminum electrolytic capacitor |
| JP2007535145A (en) * | 2004-04-25 | 2007-11-29 | アクタール リミテッド | Integrated separator for electrolytic capacitors |
| JP4739326B2 (en) * | 2004-04-25 | 2011-08-03 | アクタール リミテッド | Integrated separator for electrolytic capacitors |
| CN105513802A (en) * | 2015-12-24 | 2016-04-20 | 南通海星电子股份有限公司 | Manufacturing method of composite dielectric film-containing low-voltage formed foil |
| CN105513802B (en) * | 2015-12-24 | 2018-02-06 | 南通海星电子股份有限公司 | A kind of manufacture method of the low-pressure chemical synthesis foil containing composite dielectric film |
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