Biomass hard carbon material and preparation method and application thereof
The preparation method of biomass hard carbon materials by pretreatment with eutectic solvent and carbonization treatment solves the problem of poor sodium storage performance of existing biomass hard carbon materials, achieves high sodium storage capacity and coulombic efficiency, simplifies the process and reduces costs, and is suitable for commercial application of sodium-ion batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING UNIV OF CHEM TECH
- Filing Date
- 2026-05-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies have failed to effectively control the chemical composition and microstructure of biomass precursors when preparing biomass hard carbon materials, resulting in poor sodium storage performance in sodium-ion batteries. Furthermore, existing methods are complex, costly, or subject to harsh conditions, making it difficult to achieve large-scale production.
Biomass was pretreated using a eutectic solvent, and its composition was controlled by mixing hydrogen bond donors and acceptors. Combined with carbonization, biomass hard carbon materials with excellent microstructure were prepared.
This study achieves high sodium storage capacity and coulombic efficiency in biomass hard carbon materials, simplifies the preparation process, reduces costs, and makes them suitable for large-scale production.
Smart Images
Figure CN122403418A_ABST