| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Impact of Raw Materials on Electrochemical Properties of LiNi1/3Co1/3Mn1/3O2 Powders Prepared by Enhanced Solid State Reaction |
| XU Feng1, YAN Hongge1, CHEN Jihua1, ZHANG Zhengfu2, FAN Changling1
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1 School of Materials Science and Engineering, Hunan University, Changsha 410082, China;
2 Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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Abstract The ultrafine LiNi1/3Co1/3Mn1/3O2 powders were directly synthesized using carbonates or oxides via an enhanced solid state reaction. The microstructures, morphologies and electrochemical properties at 25/55 ℃ of product powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical workstation. The results shows that the well-ordered product powders with a finer size distribution are synthesized using carbonates. At 25 ℃, the initial coulomb efficiency of LC-BM20 reaches 91.9% at 0.1C (1C=270 mA/g) rate, discharge capacity of 133.0 mAh/g is delivered at 6C rate. After cycling 100 times, the capacitance retention still maintains 88.2% at the rate of 1C. At 55 ℃,LO-BM20 shows better electrochemical properties, the initial discharge capacity of LO-BM20 is 197.0 mAh/g at 0.1C. After cycling 100 times, the capacitance retention still maintains 82.9% at the rate of 1C.
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Published: 12 March 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (U1202272). |
| About author:: Feng Xuachieved his bachelor's degree in June 2014 from Hunan University in engineering. From September 2014 to now, he has been studying for a doctor's degree at Hunan University in engineering. His main research direction is powder material; Hongge Yan, professor and doctoral supervisor of Hunan University. He mainly engaged in advanced aluminum alloys, magnesium alloys and their composite materials and other fields of research. He has presided more than 10 national science foundation projects and provincial projects,and has published more than 150 academic papers. |
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2020, Vol. 34 
