Journal of Liaoning Petrochemical University
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The Synthesis and Properties of LaF3 Coated LiNi1/3Co1/3Mn1/3O2 Prepared by Coprecipitation Method
YANG Zhan-xu, SONG Zhi-lin, QIAO Qing-dong, REN Tie-qiang, SUN Yue, LI Qi
Abstract315)      PDF (263KB)(267)      
LaF3 coated LiNi1/3Co1/3Mn1/3O2 cathode material was prepared by coprecipitation method. The synthesized material was characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM) and galvanostatic charge/discharge cycling. The XRD data of the product show that they are single phases and retain the layered LiNi1/3Co1/3Mn1/3O2 structure. The synthesized the photocatalytic activity of 0.59% LaF3 coated LiNi1/3Co1/3Mn1/3O2 exhibits a good overcharge tolerance property with initial discharge specific capacity of 172.7 mAh/g and the discharge specific capacity of 163.5 mAh/g after 50 cycles in the voltage range 2.75~4.50 V at a constant current density of 0.3 mA/cm2.
2012, 32 (2): 5-7.
Synthesis and Properties of Spinel Li 4Ti 5O 12 Prepared by Solid-State Method at High Temperature
YANG Zhan-xu, QIAO Qing-dong
Abstract393)      PDF (285KB)(260)      
 
Li 4Ti 5O 12 anode material for lithium-ion batteries was synthetized from solid-state method using Li 2CO 3 and TiO 2 as the starting materials and ethanol as dispersing agent. The synthesized material was characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM) and galvanostatic charge/discharge cycling. The effects of thermal treatment and lithium content on their structure and electrochemical behavior have also been investigated. The synthesized Li 4Ti 5O 12 at optimum condition exhibits a good electrochemical property with initial discharge specific capacity of 167 mAh/g in the voltage range 1.0~2.2 V (versus Li/Li +) at a constant current density of 0.1 mA/cm 2, and the discharge capacity is almost no change after 30 cycles .
2011, 31 (2): 1-3. DOI: 10.3696/j.issn.1672-6952.2011.02.001