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1. (WO2018119956) POROUS ALUMINUM-FOIL ANODE AND METHOD FOR PREPARING SAME, AND LITHIUM SECONDARY BATTERY

Pub. No.:    WO/2018/119956    International Application No.:    PCT/CN2016/113282
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Fri Dec 30 00:59:59 CET 2016
IPC: H01M 4/70
H01M 4/02
Applicants: REAL POWER INDUSTRIAL LIMITED COMPANY
深圳中科瑞能实业有限公司
Inventors: TANG, Yongbing
唐永炳
XIE, Chengde
谢呈德
Title: POROUS ALUMINUM-FOIL ANODE AND METHOD FOR PREPARING SAME, AND LITHIUM SECONDARY BATTERY
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.