Self-Discharge Processes in Symmetrical Supercapacitors with Activated Carbon Electrodes.

The self-discharge of an electric double-layer capacitor with composite activated carbon electrodes and aqueous electrolyte (1 M MgSO) was studied in detail. Under a long-term potentiostatic charge (stabilization), a decrease in the discharge capacity was observed in the region of voltages exceeding 0.8 V.

Combined Separator Based on a Porous Ion-Exchange Membrane for Zinc-Halide Batteries.

In this work, we report on a comparative analysis of the bromine permeability for three separator groups under the operating conditions of a non-flow zinc-bromine battery. A new method for the synthesis of porous heterogeneous membranes based on a cation-exchange resin followed by treatment with tetrabutylammonium bromide is proposed. It was shown that the modified membrane significantly reduced the bromine permeability (crossover) with an acceptable increase in the ionic conductivity of the separator group.

Supercapacitor Properties of rGO-TiO Nanocomposite in Two-component Acidic Electrolyte.

The electrochemical properties of the highly porous reduced graphene oxide/titanium dioxide (rGO/TiO) nanocomposite were studied to estimate the possibility of using it as a supercapacitor electrode. Granular aerogel rGO/TiO was used as an initial material for the first time of manufacturing the electrode. For the aerogel synthesis, industrial TiO Hombikat UV100 with a high specific surface area and anatase structure was used, and the aerogel was carried out with hydrazine vapor.