Flow Battery And Regeneration System With Improved Safety

摘要

A method for producing electric power and regenerating an aqueous multi-electron oxidant (AMO) and a reducer in an energy storage cycle is provided. A discharge system includes a discharge unit, an acidification reactor, and a neutralization reactor. The acidification reactor converts an oxidant fluid including the AMO into an acidic oxidant fluid. The discharge unit generates electric power and a discharge fluid by transferring electrons from a positive electrode of an electrolyte-electrode assembly (EEA) to the AMO and from a reducer to a negative electrode of the EEA. The neutralization reactor neutralizes the discharge fluid to produce a neutral discharge fluid. The regeneration system splits an alkaline discharge fluid into a reducer and an intermediate oxidant in a splitting-disproportionation reactor and releases the reducer and a base, while producing the AMO by disproportionating the intermediate oxidant. The regenerated AMO and reducer are supplied to the discharge unit for power generation.

主权项

1. A method for producing electric power from an aqueous multi-electron oxidant and a reducer and for simultaneously generating a discharge fluid, said method comprising:
providing a discharge system comprising one or more forms of a reducer fluid, one or more forms of an oxidant fluid, a discharge unit, and an acidification reactor, said discharge unit comprising an electrolytic cell stack, said electrolytic cell stack comprising a plurality of electrolytic cells, wherein each of said electrolytic cells comprises an electrolyte-electrode assembly; and facilitating discharge of said discharge unit for producing said electric power from a neutral oxidant fluid comprising one or more forms of said aqueous multi-electron oxidant, and from said reducer fluid comprising one or more forms of said reducer, said facilitation of said discharge comprising:
lowering pH of said neutral oxidant fluid in said acidification reactor for generating an acidic oxidant fluid;transferring electrons from a positive electrode of said electrolyte-electrode assembly to said aqueous multi-electron oxidant in said acidic oxidant fluid; andtransferring electrons from said reducer fluid to a negative electrode of said electrolyte-electrode assembly to produce said electric power in an external electric circuit operably connected to terminals of said discharge unit and to generate an acidic discharge fluid on consumption of said acidic oxidant fluid and said reducer fluid.