首页
>
期刊首页
>
金属学报（英文版）
>
2026年9期
>
Sucrose-assisted defect repair and purification of graphite anodes for enhanced lithium-ion battery performance
Sucrose-assisted defect repair and purification of graphite anodes for enhanced lithium-ion battery performance
摘要
The rapid growth of lithium-ion batteries(LIBs)has generated increasing amounts of discarded graphite anodes,making high-value regeneration crucial for resource circularity and sustainable manufacturing.Here,we pro-pose a sucrose-assisted strategy to repair defects and purify failed graphite using biomass-derived carbon and a temperature-gradient high-temperature carbonization route.Compared with conventional acid leaching,the sucrose-based process offers clear advantages in cost effectiveness and eco-friendliness.Regeneration conditions were systematically screened,and an optimal temperature window was identified.The regenerated graphite treated at 1200 ℃ delivers the best overall electrochemical performance,achieving an initial coulombic effi-ciency of 88.43%and a reversible capacity of 331.8 mAh g-1,together with markedly improved cycling stability compared with other temperature-gradient products and the failed graphite.The superior performance is at-tributed to the favorable co-evolution of the amorphous carbon coating and graphite framework at 1200 ℃,which effectively heals defects,mitigates impurity-related degradation,and stabilizes the electrode interface.This work provides a simple,scalable,and greener alternative for recycling discarded graphite anodes.
年，卷(期)：
2026, 47(9)
机标分类号：
F812.5
TG316.3
H310.4
在线出版日期：
2026年10月26日
