Title:
POROUS ALUMINUM-FOIL ANODE AND METHOD FOR PREPARING SAME, AND LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/119956
Kind Code:
A1
Abstract:
Disclosed are a porous aluminum-foil anode and a method for preparing same, and a lithium secondary battery. The anode comprises a porous aluminum foil, the porous aluminum foil is provided with porous holes which are uniformly arranged, triangular areas formed by connecting the centers of every three adjacent holes are taken as minimum units, the area ratio of the holes in each minimum unit is within 10% - 79%, and the distance between an edge of the porous aluminum foil and the outermost porous hole is within 0.1 mm - 10 mm. The porous aluminum-foil anode can be applied in a lithium-ion battery system in which the aluminum foil is used as a current collector and an anode active material at the same time, effectively solves the problem of expansion of the battery, and can effectively alleviate the problem that a solid electrolyte membrane is damaged to decompose the electrolyte during the charge and discharge cycles of the battery, and the short-circuit problem caused by a burr of the aluminum foil puncturing the membrane, so as to improve the charge and discharge efficiency, cycling stability and safety performance of the battery.
Inventors:
TANG YONGBING (CN)
XIE CHENGDE (CN)
XIE CHENGDE (CN)
Application Number:
PCT/CN2016/113282
Publication Date:
July 05, 2018
Filing Date:
December 29, 2016
Export Citation:
Assignee:
SHENZHEN SHENKE ADVANCED INVESTMENT MAN CO LTD (CN)
International Classes:
H01M4/70; H01M4/02
Foreign References:
| CN204407415U | 2015-06-17 | |||
| JP2000090936A | 2000-03-31 | |||
| US20120052378A1 | 2012-03-01 | |||
| CN105406125A | 2016-03-16 | |||
| CN102237527A | 2011-11-09 |
Other References:
ZHANG, XIAOLONG ET AL.: "A Novel Aluminum-Graphite Dual-Ion Battery", ADVANCED ENERGY MATERIALS, vol. 6, no. 11, 15 March 2016 (2016-03-15), pages 1 - 6, XP055415692, ISSN: 1614-6840
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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