锂离子电池用Fe_3O_4/纳米碳复合材料的制备及性能  

Preparation and Performances of Fe_3O_4/ nanocarbon Hybrids as LIB Anode Materials

作　　者：方泽炜 乔志军[1,2] 马倩倩[1,2] 郑嘉明[1,2] 王成扬[1,2] 苗艳丽 魏蕾 

机构地区：[1]天津大学化工学院,天津300072 [2]天津大学化学化工协同创新中心,天津300072 [3]天津市贝特瑞新能源科技有限公司,天津301802

出　　处：《化学工业与工程》2014年第3期56-60,共5页Chemical Industry and Engineering

基　　金：国家自然科学基金面上项目(51172160);国家863计划资助项目(2011AA11A232);国家863计划项目(2014AA052301)

摘　　要：以苯甲醇为溶剂和还原剂,溶剂热法一步合成四氧化三铁/石墨烯-碳纳米管(Fe3O4/r-GOCNTs)三元复合材料。X射线衍射仪(XRD)、傅里叶红外光谱(FTIR)、扫描电子显微镜(SEM)和高倍透射电镜(HRTEM)测试显示,Fe3O4纳米晶体的生成与氧化石墨烯的还原是同时发生的,Fe3O4的尺寸约为10 nm,均匀且稳固地生长在r-GO片层和CNTs组成的三维网络结构上。电极材料在0.1 A/g下循环100次之后可逆比容量为840 mA·h/g,循环稳定性明显优于纯Fe3O4电极。A one-pot process for preparing Fe3O4/r-GO-CNTs composites has been realized. In the sol- vethermal process, benzyl alcohol was used as the solvent and reducing agent. The morphology and struc- ture of the composites were characterized by X-ray diffraction （XRD） , Fourier transform infrared （FTIR） spectroscopy, scanning electron microscope （SEM） and high-resolution transmission electron microscope （HRTEM）. The results demonstrated that the reduction of graphene oxide and the deposition of Fe3O4 a- bout 10 nm on r-GO-CNTs surface were occurred simultaneously. The cycling stability of the obtained hy- brid is better than that of the pure Fe3O4 electrode material. At the current density of 0. 1 A/g, after 100 cycles, its reversible discharge capacity still remained 840 mA.h/g.

关 键 词：纳米FE3O4 FE3O4 r-GO-CNTs复合材料 负极材料 锂离子电池 

分 类 号：TQ152[化学工程—电化学工业]