| 초록 |
To achieve high ionic conductivity, we prepared poly(ether urethane) (PEU)-based SPEs containing a large amount of salt.In case of these SPEs, cations are conducted by ion hopping through the percolation path made of high salt concentration. PEU was prepared from 4,4'-methylenebis(phenyl isocyanate) (MDI), polypropylene glycol 2000 (PPG 2000), and 1,4-butanediol (1,4-BD). SPEs were made on a stainless steel electrode from a solution of PEU, N, N’-dimethyl acetamide (DMAc), and lithium trifluoromethanesulfonate (LiCF3SO3). Then we investigated the ionic conductivities by using ac impedance analyzer. |
