Carbon-coating is a simple and practical method to improve the electrochemical performance of soft carbon anode for fast-charging lithium-ion battery,e.g.,reducing the loss of active lithium during the formation of th...Carbon-coating is a simple and practical method to improve the electrochemical performance of soft carbon anode for fast-charging lithium-ion battery,e.g.,reducing the loss of active lithium during the formation of the solid electrolyte interface(SEI)film,and thereby improving the initial coulombic efficiency.However,the systematic study of relationships between carbon-coating layer properties and electrochemical performances is still lacking.Therefore,two soft carbon materials with different carbon-coating layers were used as model materials,which were prepared by vapor-phase method and solid-phase method,respectively.SEM,TEM,XRD and Raman were conducted to characterize the structural evolution of the soft carbon in the coating process.CV,GCPL,EIS and GITT were conducted to analyze the electrochemical performance of carbon-coating soft carbon.This work provides a good guidance for the development of fast-charging soft carbon material.展开更多
基金国家自然科学基金面上项目(52077194)浙江省“十四五”第二批本科省级教学改革备案项目(JGBA2024014)+1 种基金教育部产学合作协同育人项目(2501270945)浙江大学本科“AI赋能”示范课程建设项目(2024-24),浙江大学AI For Education系列实证教学研究项目(202402)。
基金Science and Technology Program of Zhejiang Province(2022C01071)Major Science and technology projects in Ningbo(2022Z026).
文摘Carbon-coating is a simple and practical method to improve the electrochemical performance of soft carbon anode for fast-charging lithium-ion battery,e.g.,reducing the loss of active lithium during the formation of the solid electrolyte interface(SEI)film,and thereby improving the initial coulombic efficiency.However,the systematic study of relationships between carbon-coating layer properties and electrochemical performances is still lacking.Therefore,two soft carbon materials with different carbon-coating layers were used as model materials,which were prepared by vapor-phase method and solid-phase method,respectively.SEM,TEM,XRD and Raman were conducted to characterize the structural evolution of the soft carbon in the coating process.CV,GCPL,EIS and GITT were conducted to analyze the electrochemical performance of carbon-coating soft carbon.This work provides a good guidance for the development of fast-charging soft carbon material.
