| 초록 |
Generally solid polymer electrolytes(SPEs) have good safety for lithium battery, but suffer from poor ionic conductivity at room temperature. The poor ionic conductivity of SPE was overcome by the introduction of polymer-in-salt system with fast ionic transport property. However, decreasing mechanical properties are occurred while salt concentration is increasing. To solve this problem, networked polymer-in-salt system is introduced. In this study, we prepared networked polymer electrolytes consisting of poly(hydroxyethyl methacrylate) (p(HEMA)), lithium triflate (LiCF3SO3, LiTf) and hydrochloric acid(HCl) as acid catalyst. Networked SPEs were fabricated on a stainless steel electrode by solution casting method. And the electrochemical properties and mechanical properties of p(HEMA)-based SPEs were investigated by using impedance analyzer and universal testing machine, respectively. |
