摘要
采用水热法、超声辅助聚合及高温煅烧法合成了Fe3O4@C复合纳米球负极材料。通过X射线衍射（XRD）、能谱（EDS）、扫描电镜（SEM）、透射电镜（TEM）以及恒电流充放电测试等方法,研究了Fe3O4@C材料的成分、结构、形貌以及电化学性能。结果表明：在1 C时0.02~3V时,其首次充放电比容量分别为730.3、522.2m Ah/g,循环50周后容量为458.5m Ah/g,相当于61.2%的理论容量。
Uniform Fe3O4@C composite nanospheres with Fe3O4nano-particles embedded in carbon nanospheres（~200nm） were prepared by hydrothermal process followed by ultrasonication assisted polymerization and heat treatment.The microstructure,morphology and electrochemical performances of the samples were characterized by X-ray diffraction（XRD）,scanning electron microscope（SEM）,transmission electron microscope（TEM） and galvanostatic charge-discharge test.The results show that Fe3O4@C composite nanospheres demonstrate high initial discharge and charge capacity 730.3 and 522.2m Ah/g,respectively.The capacity remains 458.5 m Ah/g after 50 cycles,which is 61.2% of the theoretical capacity.
出处
《热加工工艺》
CSCD
北大核心
2015年第6期98-100,共3页
Hot Working Technology
