▎ 摘　　要

NOVELTY - The supercapacitor has a positive electrode, negative electrode and biasing electrode mounted between the positive electrode and the negative electrode. A first voltage is applied to the biasing electrode is not electrically connected to the circuit of the positive electrode and negative electrode. The positive electrode and biasing electrode comprises the same material. The positive electrode comprises a first material and the negative electrode comprises the first material, with a different amount of the first material in each of the positive and negative electrodes such that the weight ratio of the positive electrode to the negative electrode is not 1:1. The first material comprises a carbon allotrope. The first material comprises activated charcoal and graphene nanoplatelets. USE - Supercapacitor such as electrochemical device. ADVANTAGE - The separator provides a physical barrier between the electrodes to prevent shorting and ideally exhibits high porosity to allow the flow of electrolyte for charging and discharging. The stability in charge equates to improved stability in the electrode and increased operating voltages. The voltage adjusts the over- or under-voltage at the cell level and enable internal biasing of cells, which is more efficient than external biasing.