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US 2020/0052317 A1Published application
Cost-efficient high energy density redox flow battery
AssigneeEss Tech, Inc.
InventorYang Song
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a redox flow battery system. In one example, the redox flow battery is adapted with an additive included in a battery electrolyte and an anion exchange membrane separator dividing positive electrolyte from negative electrolyte. An overall system cost of the battery system may be reduced while a storage capacity, energy density and performance may be increased.
Claims20
A redox flow battery system, comprising:
- a battery cell with a positive electrolyte and a negative electrolyte, the positive electrolyte in contact with a positive electrode and the negative electrolyte in contact with a negative electrode;
- a plating additive added to the negative electrolyte, the plating additive interacting with cations of the negative electrolyte and forming complexes that plate onto the negative electrode in self-assembled monolayers.
A method for a redox flow battery system comprising;
- during a charging cycle of the redox flow battery system;
- plating a metal from an electrolyte solution, the electrolyte solution containing an additive, onto a negative electrode to form uniform and crack-free layers of metal;
- and
- during a discharging cycle of the redox flow battery system;
- deplating the metal from the negative electrode into the electrolyte solution.
2 more elements
An iron redox flow battery comprising;
- an electrolyte formed from iron chloride complexes in aqueous solution in contact with a positive electrode and a negative electrode;
- a chemical substance added to the electrolyte that bonds with iron centers from the iron chloride complexes at a first end of the substance and forms a coating around each of the iron centers and wherein the coating is formed from an inert tail at a second end of the chemical sub stance.
The iron redox flow battery of claim 20, wherein the chemical substance is stearic acid.
Dependencies are inferred from the claim text.