铜业工程Issue(1)：81-89,9.DOI:10.3969/j.issn.1009-3842.2024.01.008
碳包覆硒化锌用作高性能锂离子电池负极材料
Carbon-Coated ZnSe Nanoparticles for High-Performance Lithium-Ions Bat-tery Anode
摘要
Abstract
As the commercial used anode material of lithium-ion batteries(LIBs),the graphite can't meet the growing demand of high-density requirement owing to the intrinsic lithium storage mechanisms.Seeking for anode materials with high specific capacities is of current interest.Herein,ZnSe was prepared carbon coated via a one-step hydrothermal method and investigated their lithium-ion stor-age performances.Their morphology,structure and compositions were systematically characterized by field-emission scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),Raman spectroscopy,and it was found that the in-troduction of carbon did not change the crystal structure of ZnSe.Afterwards,the lithium-ion half cells were assembled using metal Li as counter electrode and their electrochemical performances were evaluated with cyclic voltammogram and galvanostatic charge/dis-charge method,respectively,and it was found that when used as anode of LIBs,the electrochemical performances could be improved significantly.Compared with pure ZnSe,the specific capacity of ZnSe with optimized carbon coating increased from 228.8 to 545.0 mAh/g at current density of 0.1 A/g after 50 cycles.Even cycled at a high current density of 1 A/g after 500 cycles,the specific capacity remained above 500 mAh/g.关键词
硒化锌/碳包覆/锂离子电池/负极/水热法Key words
zinc selenide/carbon coating/lithium-ion battery/anode/hydrothermal method分类
化学工程引用本文复制引用
欧镇滔,罗刚,冯小勇,郭子依,李建伟,秦伟..碳包覆硒化锌用作高性能锂离子电池负极材料[J].铜业工程,2024,(1):81-89,9.基金项目
湖南省自然科学基金项目(2023JJ30034)资助 （2023JJ30034）
