Performance of Expanded Graphite as Anode Materials for High Power Li-ion Secondary Batteries Park, Do-Youn; Lim, Yun-Soo; Kim, Myung-Soo;
The various expanded graphites (EGs) was prepared and applied as anode material for high power Li-ion secondary battery (LIB). By changing the processing conditions of EG, a series of EG with different structure were produced, showing the changed electrochemical properties. The charge-discharge test showed that the initial reversible capacity of EG anodes prepared at the suitable conditions was over 400 mAh/g and the charge capacity at 5 C-rate was 83.2 mAh/g. These values demonstrated the much improved electrochemical properties as compared with those for the graphite anode of 360 mAh/g and 19.4 mAh/g, respectively, showing the possibility of EG anode materials for high power LIB.
Expanded graphite;Lithium ion secondary battery;Anode materials;High power;
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