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Effect of Temperature on Characteristic of Carbon Nanotube Nano-Composite Electrode Supercapacitor

Monday, May 12, 2014: 16:00
Bonnet Creek Ballroom III, Lobby Level (Hilton Orlando Bonnet Creek)
N. Huang (Dalian Maritime University, University of Toronto), D. W. Kirk, S. J. Thorpe (University of Toronto), C. Liang (Dalian Maritime University), L. Xu (Sunrise Power Co. LTD), S. Zhang, W. Li, and M. Sun (Dalian Maritime University)
In order to evaluate the effect of temperature on the performance of supercapacitors using coconut shell activated carbon (AC)/carbon nanotubes (CNTs) as nano-composite electrodes, the supercapacitor’s properties were tested in 1mol/L KOH solution at 35C~60C.The results indicated, when temperature increased from 35C to 60C, the resistance decreased from 0.83Ω to 0.78Ω by 6% and the capacitance increased from 93.32F/g to 104.36F/g by 11.8%. The effects were due to increased conductivity and carbon connectivity provided by the addition of CNTs. These results indicated that CNTs-based nano-composite electrode had good performance at high moderate temperature, and would be a promising material for use in low-cost electrical energy storage device.