Ruan Dianbo

Study on the electrode's balance for electrochemical double-layer capacitor

Cube-electrochemical double-layer capacitors with different electrode thickness have been prepared from composite activated carbons via slurry, vacuum dring, aging formation and so on. After accelerated cycle-lifetimes testing, we comprehensively analyzed the changes in specific capacitance and internal resistance. The result shows that after been accelerated cycling test for a long time, the separator became yellow and black, whats more, when the positive thickness was over negative side, the EDLC would embrace a more stable and much little expansion rate. Furthermore, if the negative side was fixed and the electrode balance coefficient is 0.2, the EDLC would exhibit an optimal performance.