| 초록 |
In this study, electrode materials using carbon aerogel/polymer composites were developed to improve the electrochemical performance of supercapacitor. RF aerogels were synthesized via the sol-gel polycondensation of resorcinol(R) with formaldehyde(F) in a slightly basic aqueous solution. Carbon aerogels were obtained by pyrolyzing the RF aerogels at 1173K. The control of porous structure of the aerogels was studied by changing the amount of resorcinol(R) and sodium carbonate(catalyst, C). When the R/C ratio was 800, it showed optimal mesoporous carbon aerogels. Carbon nanosheets were prepared by electrospinning of PAN and PMMA solution with carbon aerogel in DMF. PMMA was used as supporting materials which keeps pores of aerogel, PMMA phase disappeared after thermal treatment. The morphologies were investigated using SEM. The surface area and pore size were measured by BET. Also, electrochemical properties were investigated by three electrode system. |
