| 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 hexagonal carbon structures can store charges mainly in an anodic potential section, while their extrinsic defects have 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 carbon-based materials fabricated by low temperature pyrolysis of a polymer precursor, which has a number of topological defects and redox-active heteroatoms. In this study, nanostructured 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. |
