Abstract: A method for manufacturing a supercapacitor, including, integrally forming a cell body having a bottom portion, a wall portion, and a top opening, as a single unitary member, with the bottom portion having a bottom fluid passage; inserting through the top opening an electrode assembly that has a negative and positive electrodes separated by a separator; fixing the electrode assembly to the bottom portion in an electrically conductive manner; closing the top opening with a lid assembly forming a cell interior containing the electrode assembly in a dry state, and fixing the lid assembly to the cell body; orienting the cell body with the bottom fluid passage facing downward in a vertical direction; injecting an electrolyte through the bottom fluid passage to wet the electrode assembly with the electrolyte; and closing the bottom fluid passage with a plug member and fixing the plug member to the bottom portion.

Abstract: A method for determining a capacitance of a capacitor includes measuring an electrical current supplied from or to the capacitor over time, integrating the electrical current to determine a charge amount supplied from or to the capacitor over time, determining a state of charge, SoC, of the capacitor over time, determining a total charge capacity of the capacitor based on a linear relationship between changes in the charge amount and changes in the SoC, and determining the capacitance based on the calculated total charge capacity.

Abstract: In order to improve the lifetime of energy storage modules (20) based on supercapacitor cells (24) that are used in high-power applications, the invention proposes that the cell voltage (Vcell) of the supercapacitor cells (24) is adjusted based on a detected cell temperature (Tcell).

Abstract: Processes for the production of microporous carbon material, for use in electrodes of supercapacitors and secondary batteries, in which particulate metal carbide material is fluidized with a halogen gas at a high temperature in a fluidized bed reactor, the halogen gas is desorbed at a lower temperature of 150° C. to at most 250° C. under vacuum, and then the material is passivated using hydrogen gas and then milled.