%0 Journal Article
%T Vanadium Oxygen Fuel Cell Utilising High Concentration Electrolyte
%J Batteries | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/batteries5010024
%X A vanadium oxygen fuel cell is a modified form of a conventional vanadium redox flow battery (VRFB) where the positive electrolyte (VO 2+/VO 2 + couple) is replaced by the oxygen reduction (ORR) process. This potentially allows for a significant improvement in energy density and has the added benefit of overcoming the solubility limits of V (V) at elevated temperatures, while also allowing the vanadium negative electrolyte concentration to increase above 3 M. In this paper, a vanadium oxygen fuel cell with vanadium electrolytes with a concentration of up to 3.6 M is reported with preliminary results presented for different electrodes over a range of current densities. Using precipitation inhibitors, the concentration of vanadium can be increased considerably above the commonly used 2 M limit, leading to improved energy density. View Full-Tex
%U https://www.mdpi.com/2313-0105/5/1/24