| 초록 |
There is a growing interest in the use of microphase-separated block copolymers as electrolytes in batteries and fuel cells. The use of block copolymers enables the creation of well-defined, optimized pathways for ion transport. Especially, poly(ethylene oxide) (PEO) and PEO-containing block copolymers, together with ionic salts of alkali metals are well-known as high-conductivity solid polymer electrolytes and potential candidate materials for batteries and fuel cell membranes. In this work, PS-b-PEO diblock and PS-b-PEO-b-P2VP triblock copolymer thin film are complexed with lithium perchloride salt for different [EO]/[Li] ratios. The film morphology is examined by AFM and their properties are characterized by FT-IR and impedence analyzer. The morphology and conductivity of lithium doped diblock and triblock copolymer films are investigated as a function of [EO]/[Li] ratio. In particular, their behavior is found to depend on the solvent type. |
