Electrochemical performance of controlled porosity resorcinol/formaldehyde based carbons as electrode materials for supercapacitor applications

摘要

Controlled porosity carbons aerogels were synthesized by sol-gel polycondensation of resorcinol (R) and formaldehyde (F) using sodium-carbonate as the catalyst (C). The Effect of variation of R/C ratio and carbonization temperature on the porous structure of resultant gels and carbons was investigated by characterizing the porous structure of the materials using nitrogen adsorption-desorption measurements at 77 K. It was shown that carbons with surface areas ranging between 537 and 687 m(2) g(-1) and average pore size in the range of 1.80-4.62 nm can be produced when controlling the resorcinol to catalyst (R/c) molar ratio between 100 and 500 and carbonization temperature in the range of 800-1000 degrees C.