Authors: Meiping Li Shengwan Zhang Jincai Zhang Chang Ma
Publish Date: 2013/08/20
Volume: 48, Issue: 24, Pages: 8454-8462
Abstract
The surfaces of two types of multiple wall carbon nanotubes MWCNTs namely straight and distorted tubes were modified by mesophase pitch fluoride coating PFC Brunauer–Emmett–Teller analysis Xray photoelectron spectroscopy and transmission electron microscopy were used to compare the specific surface area SSA functional groups and micrograph of the MWCNTs with and without modified coating Results show that PFC can improve the SSA of the straight tube 55 more significantly than that of the distorted tube 727 However surface coating is more easily implemented on the latter F/C = 048 than on the former F/C = 044 because of selfstructure features Electrochemical measurements indicate that PFC may enhance the specific surface capacitance and energy density of the two MWCNTs because of the effect of functional groups on the modified surface
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