Synthesis and Characteristics of LiNi0.85Co0.15O2 Cathode Materials by Particulate Sol-Gel Method for Lithium Ion Batteries
作者： Zhu Xian-Jun , Chen Hong-Hao , Zhan Hui , Liu Han-Xing , Yang Dai-Ling
关键词: Chemistry 、 Particle size 、 Chemical engineering 、 Lithium-ion battery 、 Cathode 、 Differential thermal analysis 、 Sol-gel 、 Thermogravimetric analysis 、 Scanning electron microscope 、 Lithium
摘要: A particulate sol-gel (PSG) method has been successfully used to prepare LiNi0.85Co0.15O2 cathode materials, utilizing the reaction of LiOH·H2O with Ni(CH3COO)2·4H2O and Co(CH3COO)2·4H2O in water-ethanol system. The thermal history as-prepared xerogel was established by differential analysis thermogravimetric analysis. Powder X-ray diffraction confirmed formation layered α-NaFeO2 structure at temperature 700 °C under flowing oxygen. Scanning electron microscope exhibited that crystalline powder prepared PSG had relatively smaller particle size narrow distribution than one solid state reaction. first discharge capacity material 196.4 mAh/g, 10th 189.1 mAh/g current density 18 mA/g between 3.0 4.3 V. Its cycling reversibility observed be much better reaction, which 187.3 167.1 capacity.
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