Title:
ULTRATHIN LITHIUM BAR PREFORM, COMPOSITE NEGATIVE ELECTRODE, MANUFACTURING METHOD THEREFOR, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/253318
Kind Code:
A1
Abstract:
Provided in the present invention are an ultrathin lithium bar preform, a composite negative electrode, a manufacturing method therefor, and a battery. The ultrathin lithium bar preform is provided with: a supporting layer, the supporting layer being a strip material of which the width is 3-2000 mm; and multiple ultrathin lithium bars arranged on at least one surface of the supporting layer and compounded together with the supporting layer, the multiple ultrathin lithium bars being two or more ultrathin bars extended in the length direction of the supporting layer and separated from each other in the width direction of the supporting layer, the width of the ultrathin lithium bars falling within the range of 1-200 mm, the thickness of the ultrathin lithium bars being consistent and falling within the range of 0.5-15 micrometers, individual ultrathin lithium bars being provided with a through hole of which the aperture is 5-1000 micrometers and a porosity of 50% or less, and adjacent ultrathin lithium bars being provided with a spacing of 0.5-10 mm.
Inventors:
QI DAZHI (CN)
CHENG ZIPING (CN)
LIU HUIFANG (CN)
CHEN QIANG (CN)
MU HANBO (CN)
HUAN QINGNA (CN)
WU CHUNGAN (CN)
YU KUNWANG (CN)
CHENG ZIPING (CN)
LIU HUIFANG (CN)
CHEN QIANG (CN)
MU HANBO (CN)
HUAN QINGNA (CN)
WU CHUNGAN (CN)
YU KUNWANG (CN)
Application Number:
PCT/CN2020/096782
Publication Date:
December 23, 2021
Filing Date:
June 18, 2020
Export Citation:
Assignee:
CHINA ENERGY LITHIUM CO LTD (CN)
International Classes:
H01M4/13; H01M4/139; H01M10/0525
Foreign References:
| CN210123779U | 2020-03-03 | |||
| CN1177417A | 1998-03-25 | |||
| CN210136957U | 2020-03-10 | |||
| CN103606644A | 2014-02-26 | |||
| CN209071480U | 2019-07-05 | |||
| CN103490041A | 2014-01-01 |
Attorney, Agent or Firm:
BEIJING NEW VISION PATENT & TRADEMARK AGENT LTD. (CN)
Download PDF: