Knowledge Network Node
China Ceramics. 2018, (10) Core

Synthesis and Studies of LiNi0.5Co0.2Mn0.3O2 Cathode Material for Lithium-ion BatteriesChinese Full Text

LIANG Weichun;JING Qingxiu;GUO Huan;WU Lijue;Guangdong Jia Na Energy Technology Co., Ltd;Jiang Xi University of Science and Technology;Qingyuan New Materials Research Institute.CO., Ltd;

Abstract: The LiNi0.5Co0.2Mn0.3O2 cathode material for Li-ion batteries were synthesized by sintering process with the precursor Ni0.5Co0.2Mn0.3（OH）2 and Li2CO3 as raw materials in air.The tap-density,morphology and crystal structure were evaluated by tap-density meter,Scanning Electron Microscopy（SEM）and X-Ray Diffraction（XRD）before and after sintering precursor Ni0.5Co0.2Mn0.3（OH）2,the electrochemical properties of LiNi0.5Co0.2Mn0.3O2 cathode material were tested by capacity cycling.The results showed that a hexagonal type structure with cation mixing factor of c/a is 4.9421,it means low cation mixing,the ratio of Characteristic peaks I（003）and I（104）is 2.222,with the obvious layered structure.The initial discharge capacity of LiNi0.5Co0.2Mn0.3O2 are 153.6 and 146.5 mAh·g-1 in the voltage range of 2.8~4.3V at 0.2C and 0.5C with the first charge-discharge efficiency 81.2% and 78.8%,what’s important,it shows a reversible capacity of 130.2 and 128.1 mAh·g-1 after 80 cycles,the capacity retention rate remains over 85 percent,it shows a good electrochemical performance.
Keywords：

Li-ion battery; Cathode material; LiNi0.5Co0.2Mn0.3O2; Performance;

  • DOI：

    10.16521/j.cnki.issn.1001-9642.2018.10.006

  • Series：

  • Subject：

  • Classification Code：

    TM912

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