| 초록 |
Investigations into solid polymer electrolytes (SPEs) have interested for a few decades but have not overcome low ionic conductivity at room temperature. To overcome it, in this study, we introduced polymer-in-salt system contrary to traditional system, salt-in-polymer system. In this system, polymers function as a frame and a large amount of salt make percolation path for mobile ion. Therefore, harmony between polymer and salt and solubility of polymer for salt are important. So, in the present paper, we prepared SPEs consisting of two types of polymers (poly(ethylene oxide) (PEO, hard base) and poly(ethylene imine) (PEI, softer base than PEO)) and four types of salts (LiCF3SO3(hard cation/hard anion), LiCl(hard cation/soft anion), AgCF3SO3(soft cation/hard anion), and AgCl(soft cation/soft anion)) according to hard/soft acid base (HSAB) principle and investigated the effect of HSAB principle in polymer-in-salt system by ac impedance. |
