Large Reversible Capacity of Graphene Electrodes Used in Lithium-ion Batteries

摘要：

　　High quality graphene sheets (GSs) were prepared from natural graphite by oxidation, rapid thermal expansion and ultrasonic treatment.The morphology and structure of GSs were systematically investigated by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier tansform infrared spectroscopy (FT-IR) and Raman spectroscopy.It was found that the GSs electrode used in lithium-ion battery (LIB) exhibited a relatively high reversible capacity of 902 mA h/g at a current density of 50 mA/g.After 50 cycles, the reversible capacity was still kept at 734 mA h/g.

关键词： Graphene Lithium-ion batteries Large reversible capacity Nanostructure

作者: Li-zhong Bai Dong-lin Zhao Ji-ming Zhang Feng Li

作者单位: State Key Laboratory of Chemical Resource Engineering,Key Laboratory of Carbon Fiber and Functional Polymers,Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China

会议类型: 国际会议

会议名称: 2012 China Functional Materials Technology and Industry Forum(2012中国功能材料科技与产业高层论坛)(CFMTIF2012)

会议地点: 昆明

会议语种:英文

页码: 114-118

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）