High specific capacitance capacitor cathode foil and film coating apparatus manufacturing the same

A coating device and capacitor technology, applied in capacitor manufacturing, capacitors, electrolytic capacitors, etc., can solve the problems of large loss value, large negative electrode foil, and high manufacturing cost, and achieve low impedance and loss, good thermal stability, and manufacturing cost. low effect

Inactive Publication Date: 2016-07-13
辽宁鑫金铂科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In terms of performance, the corroded aluminum foil is used as the negative electrode foil, which has small capacitance, high impedance and large loss value. Stablize
Compared with the negative electrode foil that corrodes aluminum foil, the performance of carbon foil

Method used

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  • High specific capacitance capacitor cathode foil and film coating apparatus manufacturing the same
  • High specific capacitance capacitor cathode foil and film coating apparatus manufacturing the same

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Embodiment Construction

[0013] see first figure 1 The high specific capacitance negative electrode foil of the present invention has an aluminum foil 1, a titanium nitride layer 2 is sputtered on the surface of the aluminum foil 1, and a mixed layer 3 of titanium nitride and graphite is sputtered on the surface of the titanium nitride layer 2.

[0014] see you again figure 2 , figure 2 A schematic diagram of the structure and composition of a coating device for preparing a high-capacitance negative electrode foil is shown. The coating device of the present invention includes a vacuum unwinding chamber 10, a first vacuum coating chamber 20, a second vacuum coating chamber 30 and a vacuum winding chamber 40, The vacuum unwinding chamber 10 is provided with an unwinding mechanism 11, and the vacuum rewinding chamber 40 is provided with a winding mechanism 41. The aluminum foil 1 starts from the unwinding mechanism 11 and passes through the first vacuum coating chamber 20 and the second vacuum chamber...

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Abstract

The invention discloses a high specific capacitance capacitor cathode foil. The foil possesses an aluminum foil. A surface of the aluminum foil is sputtered with a titanium nitride layer. A surface of the titanium nitride layer is sputtered with a mixing layer of titanium nitride and graphite. By using the high specific capacitance capacitor cathode foil, an experiment shows that the titanium nitride layer and the aluminum foil surface are combined firmly; the mixing layer of the titanium nitride and the graphite and the titanium nitride layer are combined firmly; as the cathode foil, an electric capacity reaches several times of the electric capacity of the aluminum foil and is higher than a carbon foil; the cathode foil possesses lower impedance and losses than the aluminum foil and is especially suitable for making a solid state capacitor and a large capacity electrolytic capacitor. The cathode foil possesses characteristics of a small size, a long service life and good heat stability. The invention simultaneously discloses a film coating apparatus manufacturing the high specific capacitance capacitor cathode foil. The apparatus mainly comprises a vacuum unreeling chamber, a first vacuum film coating chamber, a second vacuum film coating chamber and a vacuum rolling chamber. By using the film coating apparatus, from an unreeling process to a rolling process, continuous film coating can be realized, a film coating speed is fast and production efficiency is high.

Description

technical field [0001] The invention relates to a high specific capacitance negative electrode foil, and also relates to a coating device for preparing the high specific capacitance negative electrode foil. Background technique [0002] In the past, there were mainly two types of negative electrode foils for capacitors. One was pure aluminum foil that was electrochemically corroded on the surface and used directly as negative electrode foil; . [0003] In terms of performance, the corroded aluminum foil is used as the negative electrode foil, which has small capacitance, high impedance and large loss value. Stablize. Compared with the negative electrode foil that corrodes aluminum foil, the performance of carbon foil is greatly improved. The capacitance is several times higher than that of aluminum foil, and the impedance and loss value are small, but the manufacturing cost is high and the production efficiency is low. Solid capacitors have the characteristics of small si...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/045H01G9/048H01G13/00C23C14/56C23C14/06C23C14/35
CPCH01G9/0425C23C14/0036C23C14/0605C23C14/0641C23C14/352C23C14/562C23C14/568H01G9/045H01G9/048H01G13/00
Inventor 关秉羽
Owner 辽宁鑫金铂科技有限公司
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