期刊
NEW CARBON MATERIALS
卷 29, 期 2, 页码 89-95出版社
ELSEVIER
DOI: 10.1016/S1872-5805(14)60128-1
关键词
N-doped activated carbon electrode; Electric double-layer capacitor; Waste medium density fiberboard
资金
- 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 569 m(2)/g to 1 027 m(2)/g and specific capacitances from 147 F/g to 223 F/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.
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