The lithium ion battery has applied to various fields of energy storage systems such as electric vehicle and potable electronic devices in terms of high energy density and long-life cycle. Despite of various research on the electrode and electrolyte materials, there is a lack of research for investigating of the binding materials to replace polymer based binder. In this study, we have investigated petroleum pitch/polymer composite with various ratios between petroleum pitch and polymer in order to optimize the electrochemical and physical performance of the lithium-ion battery based on petroleum pitch/polymer composite binder. The electrochemical and physical performances of the petroleum pitch/polymer composite binder based lithium-ion battery were evaluated by using a charge/discharge test, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and universal testing machine (UTM). As a result, the petroleum pitch(MP-50)/polymer(PVDF) composite (5:5 wt % ratio) binder based lithium-ion battery showed 1.29 gf mm-1 of adhesion strength with 144 mAh g-1 of specific dis-charge capacity and 93.1 % of initial coulombic efficiency(ICE) value.

1. Introduction
2. Experimental
    2.1. Material
    2.2. Synthesize of petroleum pitch (MP-50)
    2.3. Preparation of petroleum pitch(MP-50)/polymer composite binder
    2.4. Preparation of the cathod materialsslurry
    2.4. Fabrication of petroleum pitch(MP-50)/polymer composite binder basedlithium ion battery
    2.5. Physical properties of the petroleumpitch(MP-50)/polymer compositebinder based lithium ion battery
    2.6. Electrochemical properties of thepetroleum pitch(MP-50)/polymercomposite binder based lithium ionbattery
3. Results and discussion
4. Conclusion
References

• 정현택(대진대학교 에너지공학부 교수) | Hyeon Taek Jeong (Division of Energy Engineering, Daejin University, 1007 Hoguk Road, Pocheon-si, Gyeonggi-do, 487-711, Korea) Corresponding author