| 초록 |
In spite of there is a lot of study of solid polymer electrolytes (SPEs), The current SPEs still have problems such as a low lithium-ion transference number ( ＜ 0.5 ), making anion concentration gradient, limiting power density and Li dendrite growth. To overcome these hurdles, of considerable interest are single-ion conducting SPEs, where anionic polymers are covalently attached to silica backbone, thereby achieving a high lithium transference number (~1). In this work, we try to synthesize lithium single-ion conducting poly[bis(trifluoromethanesulfonyl)imide] and poly(lithium acrylate)-based solid polymer electrolytes combining with an inorganic and porous silica aerogel improving mechanical properties of framework. Finally, this hybrid composite SPE can do possible to prevent anion concentration gradient and Li dendrite growth and attain high ionic conductivity. Their chemical structure and ionic conductivity are investigated using FTIR and AC impedance spectroscopy. |
