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The Influence of Activated Carbon Material on the Distribution of Working Voltage at Anode and Cathode

The distribution of voltage between anode and cathode of commercial activated carbon material under different working voltages in organic systems has been studied. Two factors have been investigated: different scan rates under the constant operating voltage and the different working voltages. The large scanning rate can be used to simulate the charge and discharge process at large current conditions and to analyze the charge and discharge performance at large current conditions. We tested galvanostatic charge-discharge (GCPL) of commercial activated carbon electrode with three-electrode system to explore the regularity of two electrodes’ voltage distribution by detecting the total voltage and the  variations of anode and cathode voltages. From which the influence of active substance on the voltage distribution was explored. Besides, it could provide a theory for the analysis of working conditions of ultra-capacitors. Reference: 1. Z. Weng, F. Li, D. Wang, L. Wen and H. Cheng, Angewandte Chemie, 125, 3810 (2013). 2. R. K O Tz and M. Carlen, Electrochim Acta, 45, 2483 (2000). 3. A. Burke, Electrochim Acta, 53, 1083 (2007).