Title:
LITHIUM METAL STRIP, LITHIUM PRE-REPLENISHING ELECTRODE PLATE, LITHIUM PRE-REPLENISHING METHOD, SECONDARY BATTERY, PREPARATION METHOD FOR SECONDARY BATTERY AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/023027
Kind Code:
A1
Abstract:
The examples of the present application provide a lithium metal strip, a lithium pre-replenishing electrode plate, a lithium pre-replenishing method, a secondary battery, a preparation method for the secondary battery and a device. The lithium metal strip provided in the present application comprises a lithium substrate and a metal element doped in the substrate. The metal element comprises at least two of magnesium, boron, aluminium, silicon, indium, zinc, silver, calcium, manganese and sodium. The strength σ, the width w and the thickness h of the lithium metal strip satisfy σ2 - (w/105h)2 > 0. In the present application, the strength of the lithium metal strip is adjusted by adding a metal element; at the same time, the adjusted strength of the lithium metal strip matches with the width and thickness thereof, thereby ensuring that during the process of rolling the lithium metal strip into a reasonable degree of thinness, the phenomenon of edge-cracking of the lithium strip is avoided, thus saving lithium metal resources and production costs, and also enabling the electrode plate to obtain a uniform lithium pre-replenishing effect.
Inventors:
GONG ZHIJIE (CN)
XIE BIN (CN)
CHEN SHITONG (CN)
XIE BIN (CN)
CHEN SHITONG (CN)
Application Number:
PCT/CN2020/104525
Publication Date:
February 11, 2021
Filing Date:
July 24, 2020
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
B21B1/40; H01M4/139
Foreign References:
CN209001017U | 2019-06-18 | |||
CN104842626A | 2015-08-19 | |||
CN105755410A | 2016-07-13 | |||
JP2018130759A | 2018-08-23 |
Other References:
See also references of EP 3859833A4
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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