THREE-DIMENSIONAL NETTED STRUCTURE COMPOSITE MATERIAL FOR LITHIUM BATTERY, AND PREPARATION METHOD THEREFOR AND USE THEREOF

WIPO Patent Application WO/2024/087653

A1

Disclosed in the present invention are a three-dimensional netted structure composite material for a lithium battery, and a preparation method therefor and the use thereof. The three-dimensional netted structure composite material comprises: a porous carbon microsphere containing netted structure through holes, silicon nanowires distributed in the through holes of the porous carbon microsphere, and a carbon shell. The silicon nanowires are formed by catalyzing, by means of Au or Ag, a silicon-containing gas and depositing same in the through holes; or the silicon nanowires are formed by depositing a silane gas in the through holes to form silicon oxide nanoparticles, and then electrolyzing the silicon oxide nanoparticles in the through holes under a molten salt system. The silicon nanowires form three-dimensional netted structures in the through holes of the porous carbon microsphere. Applying the three-dimensional netted structure composite material as a negative electrode active material in a lithium battery can endow the lithium battery with a relatively low volume expansion rate, a relatively high mass specific capacity, and good conductive performance and cycling stability.

LIU BONAN (CN)
LUO FEI (CN)

PCT/CN2023/100100

May 02, 2024

June 14, 2023

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TIANMULAKE EXCELLENT ANODE MAT CO LTD (CN)

H01M4/62; H01M4/38; H01M10/0525

CN115360355A	2022-11-18
CN115020689A	2022-09-06
US6248674B1	2001-06-19
CN106784833A	2017-05-31
CN103107315A	2013-05-15
CN105609749A	2016-05-25
CN110311125A	2019-10-08
US20160211511A1	2016-07-21

HECHWISE PATENT & TRADEMARK FIRM (CN)

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