Title:
POROUS TINFOIL ANODE AND METHOD FOR PREPARING SAME, AND SODIUM-ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/119957
Kind Code:
A1
Abstract:
Disclosed are a porous tinfoil anode and a method for preparing same, and a sodium-ion secondary battery. The anode comprises a porous tinfoil, the porous tinfoil 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 1% - 89%, and the distance between an edge of the porous tinfoil and the porous hole is within 0.1 mm - 10 mm. The porous tinfoil anode can be applied in a sodium-ion battery system in which the tinfoil is used as a current collector and an anode active material at the same time, effectively solves the problem of expansion of the battery caused by tin-soda alloying, 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 tinfoil 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)
SHENG MAOHUA (CN)
XIE CHENGDE (CN)
SHENG MAOHUA (CN)
Application Number:
PCT/CN2016/113284
Publication Date:
July 05, 2018
Filing Date:
December 29, 2016
Export Citation:
Assignee:
SHENZHEN SHENKE ADVANCED INVESTMENT MAN CO LTD (CN)
International Classes:
H01M4/02; H01M4/70
Foreign References:
| CN204407415U | 2015-06-17 | |||
| JP2000090936A | 2000-03-31 | |||
| CN102903924A | 2013-01-30 | |||
| CN104091921A | 2014-10-08 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF: