ZHANG Ming-Xiang, Jin-Xiao-Juan, ZHAO Qiang. Preparation of N-doped activated carbons for electric double-layer capacitors from waste fiberboard by K2CO3 activation. New Carbon Mater., 2014, 29(2): 89-95. doi: 10.1016/S1872-5805(14)60128-1
Citation:
ZHANG Ming-Xiang, Jin-Xiao-Juan, ZHAO Qiang. Preparation of N-doped activated carbons for electric double-layer capacitors from waste fiberboard by K2CO3 activation. New Carbon Mater., 2014, 29(2): 89-95. doi: 10.1016/S1872-5805(14)60128-1
ZHANG Ming-Xiang, Jin-Xiao-Juan, ZHAO Qiang. Preparation of N-doped activated carbons for electric double-layer capacitors from waste fiberboard by K2CO3 activation. New Carbon Mater., 2014, 29(2): 89-95. doi: 10.1016/S1872-5805(14)60128-1
Citation:
ZHANG Ming-Xiang, Jin-Xiao-Juan, ZHAO Qiang. Preparation of N-doped activated carbons for electric double-layer capacitors from waste fiberboard by K2CO3 activation. New Carbon Mater., 2014, 29(2): 89-95. doi: 10.1016/S1872-5805(14)60128-1
MOE Key Laboratory of Wooden Material Science and Application, College of Material Science and Technology, Beijing Forestry University, Beijing, 100083, China
Funds:
Scientific research projects of forestry public welfare (201204807).
N-doped activated carbons for electric double-layer capacitors were prepared from waste medium density fiberboard using K2CO3 activation. The effects of carbonization temperature, activation temperature, activation time and K2CO3/coke mass ratios on surface chemical compositions, pore structure and electrochemical performance of the resulting activated carbons were investigated. Results indicated that the activated carbons had nitrogen contents from 0.93-2.86%, Brunauer-Emmett-Teller specific surface areas from 569m2/g to 1027m2/g and specific capacitances from 147F/g to 223F/g, depending on carbonization and activation conditions. The maximum specific capacitance was attributed to a high surface area, optimum pore size, large pore volume and high N-5 (the pyrrolic nitrogen and pyridinic nitrogen in association with oxygen functionality) content.