| 초록 |
Graphite anode materials forlithium ion battery are most commonly available due to their high structural stability. However, their low specific capacity(372 mAh/g) hinders the application on large scale energy storage system suchas electric vehicles. To overcome this problem, soft carbon anode materialsattract widespread attention among the many candidates. Since soft carbon hasan interlayer distance higher than 0.3354 nm of graphite, the intercalationrate of lithium ions is increased. Thus, it has an initial capacity larger thanthe theoretical capacity of graphite. The electrochemical properties of soft carbonanodes can be changed depending on the type of carbon precursor. Petroleumresidues used as soft carbon precursors can be classified PFO, FCC-DO, and VR depending on the refining method. In this study, soft carbon anode materialswere prepared by carbonization of carbon precursors (PFO, FCC-DO, VR) and theirelectrochemical properties were investigated. |
