Silicon-carbon composite
A silicon-carbon composite with controlled silicon deposition within the pores of porous activated carbon, analyzed via thermogravimetric analysis, addresses volume expansion issues, enhancing battery capacity and durability.
WO2026121780A1PCT designated stage Publication Date: 2026-06-11LG CHEM LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- LG CHEM LTD
- Filing Date
- 2025-12-02
- Publication Date
- 2026-06-11
Smart Images
Figure KR2025020377_11062026_PF_FP_ABST
Abstract
The present invention relates to a silicon-carbon composite comprising: porous activated carbon; and a silicon coating layer present on the outer surface of at least one of an inner surface of pores and a particle surface of the porous activated carbon, wherein a weight increase rate thereof measured according to a silicon-carbon composite analysis method is 5.00% or less, the silicon-carbon composite analysis method comprising the steps of: under an air atmosphere, (S1) heating a silicon-carbon composite from room temperature to 200°C to 500°C; (S2) holding the temperature range for 30 minutes to 5 hours; and (S3) heating from the temperature range to 900°C or higher, wherein the weight increase rate of the silicon-carbon composite is measured by thermogravimetric analysis.
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