An aqueous organic redox flow battery (AORFB) is a type of redox flow battery that utilises organic redox-active material, dissolved in an aqueous electrolyte. The battery is comprised of two liquid electrolytes, the anolyte and the catholyte, also known as the negolyte and posolyte, respectively. These electrolytes are stored externally in reservoirs and are pumped into an electrochemical cell to be charged, and later discharged. The anolyte and catholyte are separated by an ion-selective membrane, which is designed to conduct charge-balancing ions, whilst preventing the mixing of the redox-active material. 7, As the energy is stored in solution, rather than in the electrode, the capacity of these devices is easily scaled to meet the requirements of grid-level storage. Redox flow batteries can be composed from a variety of redox-active materials. AORFBs are of particular interest because they can be made from low-cost, Earth-abundant and non-toxic materials. Alkaline anthraquinone/ferrocyanide batteries are a prime example of AORFB, which hold record capacity retention rates within the field. These batteries are now in the process of being commercialized, though they currently exist on a small scale. Two of the main processes limiting the economic viability of anthraquinone/ferrocyanide batteries are electrolyte degradation and crossover (i.e., unwanted transport of redox-active material through the membrane). Both the battery materials and charging protocols need to be carefully designed to minimize these degradation processes and improve battery lifetime.