| 초록 |
Electrolyte is one of the important components consisting of lithium secondary battery. As the form of electrolyte for lithium secondary batteries, solid polymer electrolyte(SPE) is more safe in terms of explosion than liquid electrolyte. Also it can be applied for thin and flexible batteries and use lithium metal as an anode. Lithium ion in SPE exists as the form of solvation by polar group in polymer matrix. That is, the property of polymer matrix in SPE will affect the ionic conductivity. Then this study focused on electrochemical property of poly(ethylene oxide)(PEO)-block-poly(propylene oxide)(PPO)-block-PEO copolymer based SPE on its morphology. For this, PEO-b-PPO-b-PEO copolymer based SPEs which had spherical micelle and various size of PEO-b-PPO-b-PEO copolymer micelle were prepared. And characterizations of PEO-b-PPO-b-PEO copolymer based SPEs were carried out by means of FT-IR, transmission electron microscope(TEM), and impedance analyzer. |
