Effect of ball-milling technology on the pore structure and lectric properties of activated carbon
The effects of particle size of activated carbon (AC) on its wettability, electrode coating technology and electric chemical performance are researched to assemble nonaqueous electric double layer capacitors (EDLCs) for high power requirements. The specific surface area and total pore volume of AC decrease from 2137 to 1683 m 2 /g, and 0.95 to 0.78 cm 3 /g, respectively, if it was ball-milled for 8 hr. The pore size distributions are similar in the range of 0.7 to 3.5 nm for different ball-milling time. There exists oxidation on the surface of AC during the ball-milling process and the ratios of O-C=O oxygen compositions increase whereas that of C-O, C=O decrease. The peeling strength of AC coated on current collector is almost inverse proportion with the particle size of AC as well as the resistance of EDLCs, and its capacitance decreases about 6%.
Electric double layer capacitor Ball-milling Activated carbon Electrode
Zhang Liming Zhang Rui Zhan Liang Qiao Wenming Liang Xiaoyi Ling Licheng
State Key Laboratory of Chemical Engineering ￡?East China University of Science and Technology, Shanghai 200237, China
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）