Improvement the electrochemical performance of Li1.2Ni0.2Mn0.6O2 electrode with AlF3 added
Layered solid solution material Li1.2Ni0.2Mn0.6O2 is synthesized and the A1F3 is added to improve the electrochemical performance.X-ray diffraction (XRD) results show that the Li1.2Ni0.2Mn0.6O2 samples exhibit layered characteristics.The AlF3 additive is detected by transmission electron microscope (TEM) technology.The electrochemical tests show that Li1.2Ni0.2Mn0.6O2 electrode with AlF3 added delivers better discharge capacity (240 mAhg-1),first coulomb efficiency (79.2%),cyclic performance (capacity retention ratio of 100.6% after 50 cycles),and rate capacity (68 mAhg-1 at 10 C) than the pristine sample.Electrochemical impedance spectroscopy (EIS) results show that the charge transfer resistance of Li1.2Ni0.2Mn0.6O2 electrode with AlF3 added increases slower than that of pristine Li1.2Ni0.2Mn0.6O2 after cycling,which is responsible for better cyclic and rate performance.
Li-ion battery Lil.2Ni0.2Mn0.6O2 cathode AlF3 added electrochemical performance
Liu Yunjian Liu Sanbin Chen Xiaohua Chen Long
School of Material Science and technology Jiangsu University, Zhenjiang, China; Postdoctoral worksta Postdoctoral workstation of Chery Automobile Co., Ltd, Wuhu, Anhui, China School of Automobile and Traffic Engineering Jiangsu University, Zhenjiang, China
国际会议
上海
英文
77-77
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）