Preparation and properties of coal-based anode materials for sodium-ion batteries
Using Zhundong cleaned coal as precursor,the coal-based anode material for sodium ion battery was prepared by grinding,low temperature and high temperature heat treatment.The pyrolytic characteristics of Zhundong cleaned coal were studied by TG,the structure and morphology of the prepared materials were investigated by XRD and SEM,and the electrochemical properties of the sam-ples were evaluated by electrochemical cycling,CV and EIS.The results show that the coal-based anode material prepared at 1 300 ℃ has good electrochemical performance:the first capacity is 279.8 mAh/g,the first columbic efficiency is up to 90.4％,and the charging capacity can remain at 246.3 mAh/g after 50 cycles under the condition of 150 mA/g current density.
Coal-based materialsanode materialsodium ion batteries
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维普
