Title:
PREPARATION METHOD FOR LOW-VOLTAGE ELECTRODE FOIL HAVING GOOD BENDING FATIGUE STRENGTH
Document Type and Number:
WIPO Patent Application WO/2023/103181
Kind Code:
A1
Abstract:
The present invention relates to a preparation method for a low-voltage electrode foil having good bending fatigue strength, comprising the following steps: performing an oil removal operation on a first aluminum foil, a second aluminum foil, and a third aluminum foil; sequentially performing pre-electrolysis, electrolytic corrosion, cleaning and drying operations on the first aluminum foil; coating the first aluminum foil with an aluminum-based slurry so as to form a primary coating layer on the front surface and the back surface of the first aluminum foil; attaching the second aluminum foil and the third aluminum foil to the primary coating layer in an one-to-one correspondence manner to form a composite aluminum foil; performing cold rolling treatment on the composite aluminum foil; and sequentially performing heating and cooling treatment on the composite aluminum foil to obtain a product. In actual manufacturing and forming, an electrode foil serving as a middle core layer is still fully corroded, thereby avoiding the phenomenon that the capacitance of the low-voltage electrode foil is greatly reduced due to the change of a preparation process route. In addition, actual experimental data indicates that the low-voltage electrode foil prepared by using the method has better bending fatigue strength while keeping the overall thickness unchanged.
Inventors:
WANG JIANZHONG (CN)
GU JIANPING (CN)
GU JIANPING (CN)
Application Number:
PCT/CN2022/077207
Publication Date:
June 15, 2023
Filing Date:
February 22, 2022
Export Citation:
Assignee:
NANTONG HAIXING ELECTRONICS LLC (CN)
NANTONG HAIYI ELECTRONICS CO LTD (CN)
SI CHUAN ZHONGYA TECH COMPANY (CN)
NANTONG HAIYI ELECTRONICS CO LTD (CN)
SI CHUAN ZHONGYA TECH COMPANY (CN)
International Classes:
H01G9/045
Foreign References:
| CN108172321A | 2018-06-15 | |||
| CN113502476A | 2021-10-15 | |||
| CN110517892A | 2019-11-29 | |||
| US20060076243A1 | 2006-04-13 | |||
| US20020186521A1 | 2002-12-12 | |||
| US20020149902A1 | 2002-10-17 |
Attorney, Agent or Firm:
NANJING ZHENGLIAN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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