| 초록 |
Electrolyte is one of the important components consisting of lithium secondary battery. Among them, lithium polymer battery which is almost the same performance as lithium ion battery is made of solid polymer electrolyte(SPE). Lithium ion in SPE exists as the form of the solvation by polar group in polymer matrix. And lithium ions in the SPE are moved by polymer segmental motion. That is, the property of polymer matrix in SPE can affect the conduction of lithium ion. Therefore, 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), impedance analyzer. |
