Abstract
A new type of nanoporous carbon material by pyrolysis of styrene-acrylonitrile random copolymer (SAN)/multiwalled carbon nanotube (MWCNT) composite was prepared. The thermal decomposable styrene component of the SAN could act as a soft template to form abundant nanopores with the help of the pristine nanotubular framework of the MWCNT. The measured Brunauer–Emmett–Teller surface area of the SAN/MWCNT-based carbon was up to 376 m2/g with a MWCNT content of 10 wt%, 11 and 14 times as large as those of SAN-based and polyacrylonitrile/MWCNT-based carbons, respectively. As a result, the highest specific capacitance of an as-prepared SAN/MWCNT-based carbon reached 118 F/g, which is much higher than those of the latter two.
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