| 초록 |
For the development of all-solid-state lithium-ion batteries (ASSLB), we prepared poly(lithium acrylate) (PLiA) electrolytes with lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and N-methylacetamide (NMA) which have high static dielectric constant (εs ≈ 180 at T = 30℃). In NMA, its acetamide (-CO-NH-CH3) groups can coordinate with TFSI- anions, so that the lithium cations are in a mobile state, thereby allowing PLiA-NMA to become a single-ion conductor. We systemically investigated ion conduction, thermal, and viscoelastic properties of PLiA-NMA using electrochemical impedance spectroscopy (EIS), differential scanning calorimetry (DSC), rheometer, and Fourier transform infrared spectroscopy (FTIR). These results, observed in PLiA-based polymer electrolytes containing LiTFSI and NMA, can lead to insight into the optimal design of multifunctional electrolytes for ASSLB. |
