Comparison of sol–gel derived carbon xerogels synthesized from different phenolic precursors and solvents: electrical conductivity and dielectric relaxation
Carbon xerogels based on resorcinol/formaldehyde (R/F) and pyrogallol/formaldehyde (P/F) were synthesized via a sol–gel route using hydrochloric acid as catalyst, with distilled water or acetone as solvent, in order to perform a comparative study of precursor and solvent effects on their structural and electrical prope...