| 초록 |
Herein, We demonstrate heteroatom sulphur (S) incorporation into the graphene oxide architectures for high performance supercapacitor (SC) electrodes. The S-incorporated RGO aerogels (SRGA) have hierarchically structural morphology, thereby promoting the fast ion diffusion, and offering a facile ion accessibility. The morphology and chemical structure of SRGA were comprehensively investigated by various microscopic (SEM, TEM, STEM) and spectroscopic methods (Raman and XPS). As evidenced by electrochemical measurements, The SRGA electrodes show excellent electrochemical properties such as high specific capacitance of 445.6 F g-1 at scan rate of 5 mV s-1, good rate capability of 78.2% and cyclic stability of 73.4% over 1500 cycles due to the existence of S-containing groups and 3D macroscopic structure. |
