Materials Reports  2019, Vol. 33 Issue (z1): 50-52 |
| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Synthesis and Electrochemical Properties of Li-rich Mn-based Cathode Materials with Different nLi/nM Ratios |
| FENG Pingjing1, LU Peng1, LIU Yaochun1, HE Yulin2
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1 Energy Storage Material Laboratory, Huai’an Technology Institute of Advanced Energy Materials, Huai’an 223005
2 College of Mechanical Electronics and Information Engineering, Jiangsu Vocational College of Finance and Economics, Huai’an 223003 |
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Abstract Spherical Li-rich precursors were synthesized with NiSO4·6H2O, CoSO4·7H2O, and MnSO4·H2O as raw material and Na2CO3 as precipitant, the Li1.5Ni0.25Mn0.65Co0.1O2.5 Li-rich Mn-based cathode material was prepared by 1.00, 1.01, 1.02, 1.03, 1.04, 1.05 and 1.06 nLi/nM ratios with Li2CO3. The electrochemical performance test results show that the Li-rich cathode material with the nLi/nM ratio of 1.05 has excellent electrochemical performance and good cycle performance. Between 2.0 V and 4.8 V, the first discharge capacity at 0.1C rate is 276 mAh/g, and the capacity retention rate after 200 cycles at 1.0C rate is 83.7%.
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Published: 05 July 2019
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| About author:: Pingjing Fengobtained her master’s degree in mate-rial engineering from Xiamen University, during the pe-riod of school, the main research direction is the electrocatalysts of oxygen evolution reaction (OER). Currently, she is a material engineer of Huai’an Technology Institute of Advanced Energy Materials, her main research direction is lithium-rich cathode materials. She participated in a number of natural science foundation and school-enterprise cooperation projects. She has published 5 journal papers including 4 in SCI, applied 3 national invention patents.Peng Lureceived his master’s degree in material phy-sics and chemistry from Changzhou University, and is a material engineer of Huai’an Technology Institute of Advanced energy Materials now. His research direction is energy storage materials and devices. He participated in the National Natural Science Foundation of China, Jiangsu Natural Science Foundation, Hunan Natural Science Foundation, Huai'an Key Research and Deve-lopment Program and other projects. He has published more than 7 journal papers including 6 in SCI, applied 11 national invention patents and 1 of them were authorized. He was awarded the 2016 Master’s National Scholarship. |
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