Preparation of Activated Carbon Fibers by Chemical Activation Method with Hydroxides

Effect of activation on boron nitride coating on carbon fiber

“…Chemical activation is proven to be a very efficient method to obtain carbon fibers with high surface area, ordered structure with narrow micropore [ ( F i g . _ 1 ) T D $ F I G ] distribution [13]. This higher surface area in activated fiber favours in situ carbothermal reduction of B 2 O 3 .…”

“…On pyrolysis, impregnated fiber develops a much richer carbon containing material with much more ordered structure. Once the agent was removed during heat treatment, porosity is generated in carbon fibers [13]. Chemical activation is proven to be a very efficient method to obtain carbon fibers with high surface area, ordered structure with narrow micropore [ ( F i g .…”

Carbothermal synthesis of boron nitride coating on PAN carbon fiber

“…Chemical activation is proven to be a very efficient method to obtain carbons with high surface area, ordered structure and narrow micropores distribution. 20 This higher surface area in activated fiber favours in situ carbothermal reduction of B 2 O 3 .…”

“…During the activation process, the HNO 3 impregnate into the bulk and on heat treatment at 80-85 • C of the impregnated fiber develops pores in the carbon fiber. 20 In order to identify chemical bondings of the coating, XPS were conducted on coated carbon fibers. Fig.…”

Pore size control and electrochemical capacitor behavior of chemically activated polyacrylonitrile – Carbon nanotube composite films

“…PAN/CNT system is quite promising for achieving good pore size control, high surface area and high specific capacitance carbon materials. While there are number of studies in the literature on the effect of chemical activation on coal [24][25][26][27], and PAN [10,17,[28][29][30] based precursors, there is only one report on chemical activation of PAN/CNT [31] and this study was limited to solution spun fibers with 5 wt.% CNTs activated at one activation condition. In the current work, we explore the effect of activation temperature, molarity of impregnating agent, and composition(PAN/CNT ratio) of the precursor film to develop porous carbon electrodes with high energy density (22 W h kg À1 ), narrow pore size distribution (below 5 nm) and high surface area (1740 m 2 g À1 ).…”