| 초록 |
Carbon-based materials have attracted much attention as active materials for energy storage, because of their well-known chemistry and low cost as well as highly tunable and versatile redox-activities. Intrinsic defects such as topological defects and edge defects of aromatic poly-hexagonal carbon structures can store charges mainly in an anodic potential section, while extrinsic defects show redox-activities particularly in a cathodic potential region. Therefore, through a sophisticate design of the carbonaceous materials, a desirable electrochemical performance can be achieved. Pyropolymer is a kind of carbonaceous materials fabricated by low temperature pyrolysis of a polymer precursor, which has a number of topological defects and numerous redox-active heteroatoms. In this study, advanced pyropolymers were fabricated from polymer precursors by simple heating with potassium hydroxide, and high-performance asymmetric energy storage devices based on the pyropolymers were achieved. |
