| 초록 |
Nanoporous carbon materials (NCMs) have versatile charge storage characteristics according to their microstructure and surface properties; they can store charges by electrochemical double layer (EDL) formation as well as pseudocapacitive reactions. In an electrolyte system composed of Li salts and carbonate-based solvents, surface heteroatoms and edge defects on the NCMs can be a redox host for the pseudocapacitive Li ion storage, while nanopores can store anion by the EDL formation. The amphicharge-storable properties of the NCMs lead to high energy and power performances with a long-term cycle life. Nevertheless, the anion storage nature of the NCMs are not much studied thus far. In this study, the NCMs which have various pore structures and surface properties were fabricated through a controlled pyrolysis and followed activation process of sawdust precursors. And anion storage properties of the NCMs in different electrolyte systems were investigated by electrochemical analysis. |
