| 초록 |
Two dimensional (2D) carbons were prepared by using 2D triazine-based template. 2D templates are prepared from melamine and cyanuric acid. They are hydrogen-bonded in DMSO to give 2D hexagonal, planar sheets which are stacked in a graphitic fashion and then aggregated into 3D hollow spheres. Glucose, a molecular precursor of carbon, is added to the template and then carbonized together. This simple mixing and carbonization lead to formation of g-CN/carbon composite in which 2D g-CN resulted from the template is homogeneously covered with 2D amorphous carbon. Such double layered structure was found to exhibit good Na-ion storage capability due to the turbostratic character. Further, 3D macroscopic structure of the 2D composite inherited from the template is advantageous for electrode fabrication, during which the individual 2D carbon components maintain their unique performance. |
