Alkali metal-air flow battery can include an electrochemical reaction unit and an electrolyte reservoir. The electrolyte reservoir can be fluidly coupled to a cathode electrolyte chamber to allow for circulation of an electrolyte solution from the electrolyte reservoir to the cathode electrolyte chamber. Circulation of the electrolyte solution from the electrolyte reservoir to the cathode electrolyte chamber can be done at a rate sufficient to maintain the solubility of at least one discharge product of a reaction occurring in the cathode section in the electrolyte solution.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with government support under a federally sponsored research project entitled, "Research and Development on Some Critical Issues for High Energy and Power Densities, and Good Lifespan of Li-air Batteries" sponsored by US Army CERDEC; and a federally sponsored research projected entitled, "Optimization of specific capacity of Li-Air Batteries Using Carbon Nanotube Sheets as Air Electrodes" sponsored by US Army CERDEC. The government has certain rights in the invention.