| 초록 |
In this work, we synthesized petroleum-pitch-based activated carbon/manganese dioxide (AM) composites with various weight ratio of manganese dioxide. The electrochemical performance, including capacitance and cyclic stability, of the resulting composites was investigated. influence of the activated carbon/manganese dioxide (AM) ratio on the electrochemical properties of the composite and changes in the pore structure were also examined. The specific capacitance at constant current density 1A g-1 was calculated from galvanostatic charge-discharge cycling tests. The composites material has a high specific capacitance of 60.3 F g-1, the composites exhibited cyclic stability and maintained at least 100.28% of initial relative dielectric constant after 2000 cycles.. |
