Characteristics of Ultra-fine CF/ACF Web from Electrospinning of Isotropic Pitch Solutions in Bicomponent Solvents

摘要

The petroleum-derived pitch solution in a mixed solvent of tetrahydrofuran(THF) and dimethylfromamode(DMF)was successively spun web by electrospinning. The spinnability of the pitch solutions was improved by the addition of the DMF. The carbonized fibers were dump-bell shaped with 3-6 μm in long and 2-3 μm in short directions. The specific surface areas of the activated carbon fibers (ACFs) were as large as 1365-1800 m~2/g, which came mainly from micro pores.