摘要
以KOH为活化剂对芝麻杆进行活化以及碳化处理,得到多孔芝麻杆基生物质碳,以此作为碳源,K 3[Fe(CN)6]为铁源,借助水热法制备Fe 2O 3/C复合电极材料。对制备的复合电极材料进行XRD、SEM和拉曼光谱表征,结果显示复合材料仍具有芝麻杆生物质碳的内部遗传孔结构,且碳有部分石墨化;对材料进行电化学性能测试,发现在电流为100 mA/g时,芝麻杆生物质碳与物质量比为1∶150的K 3[Fe(CN)6]和NaOH混合溶液水热反应得到的Fe 2O 3/C复合电极材料首次放电比容量为1439.4 mAh/g,循环150周期后,材料的比容量为908.6 mAh/g。
In this paper,sesame stem-based biomass porous carbon was prepared through the activation and carbonization of sesame stems using KOH as an activator.And then the biomass carbon and K 3[Fe(CN)6]were used to prepare Fe 2O 3/C composite electrode materials by hydrothermal method.XRD,SEM and Raman spectrometer were used to characterize the material.The results show that the porous carbon material exhibited an amorphous structure,and a part graphitization,and still had the internal genetic structure of sesame stem biomass carbon.Electrochemical performance results showed the first discharge specific capacity of Fe 2O 3/C composite electrode material obtained by reaction of K 3[Fe(CN)6]and NaOH mixed solution with sesame stem biomass carbon to material ratio of 1:150 was 1439.4 mAh/g.After 150 cycles of charge and discharge,the specific capacity of the material could still reach 908.6 mAh/g.
作者
杜逸轩
刘辉
付争兵
赵毅伟
Du Yixuan;Liu Hui;Fu Zhengbing;Zhao Yiwei(College of Chemistry and Materials Science,Hubei Engineering University,Xiaogan,Hubei 432000,China)
出处
《湖北工程学院学报》
2020年第6期5-8,共4页
Journal of Hubei Engineering University
基金
湖北省大学生创新创业训练计划项目(S202010528059)。
关键词
生物质碳
复合电极材料
锂离子电池
biomass carbon
composite electrode material
lithium ion battery
