Redox flow battery with redox couple based on carbon dioxide

摘要

A redox flow battery in which the cathode uses a redox couple based on carbon dioxide. The cathode is the reduction of carbon dioxide to carbonaceous species (eg, formic acid, oxalic acid or their salts) during battery charge (ie, energy storage) mode, and the carbonaceous matter during battery discharge (ie, energy generation) mode. Includes a bifunctional catalyst that allows oxidation of the species. The anode of the battery is bromine-bromide, chlorine-chloride, vanadium (IV) -vanadium (V), chromium (III) -dichromate (VII), cerium (III) -cerium (IV), oxygen-water ( Or a variety of redox pairs including but not limited to hydroxide). [Selection] Figure 1