Preparation of Fluorinated Graphite Cathode Material and Its Application in Lithium Primary Batteries
The bulk graphite(G)is fluorinated by changing the fluorination temperature,and the fluorinated graphite with different fluorine content,namely FG-x,is obtained.When the fluorination temperature is 500 ℃(FG-500),FG-500 shows excellent rate performance and high power density and energy density.The discharge specific capacity is 812.5 mAh·g-1 and the voltage plateau is 2.60 V at 10 mA·g-1.The discharge specific capacity and voltage plateau are 698.4 mAh·g-1 and 2.13 V at 1 000 mA·g-1,respectively.The maximum power density and energy density of FG-500 are 2 131.2 W·kg-1 and 1 990.4 Wh·kg-1,respectively.
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