| 초록 |
When lithium secondary battery on high power for electric car and energy storage device is used, the reduction of available energy is a problem. This problem influences cell life, stability and energy efficiency. To solve the problem, a completely new type of lithium secondary battery to clear the interfacial resistance between electrode and electrolyte was introduced. In this study, polythiophene(PTh) derivatives were used for an anode. For this, we intended to introduce push-pull structure. The poly(3-(3-fluoro-4-methylhydroxyphenyl)thiophene)(PFPT) with electron withdrawing group(EWG) and poly(3,4-ethylenedioxythiophene)(PEDOT) with electron donating group(EDG) are copolymerized to make the push-pull structure. It is expected that the low doping stability and electric conductivity problem can be solved by using PEDOT-co-PFPT copolymer. And the characterization of PEDOT-co-PFPT based anode was done by FR-IR, XPS, impedance analyzer, linear seep voltammetry and cyclic voltammetry. |
