High-capacity slurry electrode and flow energy storage system based on same
AssigneeKorea Institute of Energy Research
InventorsHana Yoon, Jung Joon Yoo
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Abstract
Disclosed herein is a high-capacity slurry electrode for use in a flow energy storage system, comprising: an electrolyte; electrode active particles, distributed in the electrolyte, functioning as an electrode active material in an electrochemical flow capacitor storage system; and a redox active material, dissolved in the electrolyte, behaving as a pseudo-capacitor through a redox reaction on a surface of the electrode active material, wherein the high-capacity slurry electrode exhibits both capacitor properties based on the electrode active particles and pseudo-capacitor properties based on the redox active material.
Claims16
A high-capacity slurry electrode for use in a flow energy storage system, comprising:
- an electrolyte;
- electrode active particles, distributed in the electrolyte, functioning as an electrode active material in an electrochemical flow capacitor storage system;
- and
- a redox active material, dissolved in the electrolyte, behaving as a pseudo-capacitor through a redox reaction on a surface of the electrode active material,
- wherein the redox active material is a reduced form, an oxidized form, or a derived form of an electrochemically active organic molecule based on a naphthalene or anthracene compound having either or both of an alcohol and an amine group, and
- wherein the high-capacity slurry electrode exhibits both capacitor properties based on the electrode active particles and pseudo-capacitor properties based on the redox active material.
A method for preparing a high-capacity slurry electrode comprising:
- dissolving a redox active material in an electrolyte to give a redox active electrolyte, the redox active material being electrochemically active so as to perform a redox reaction;
- and
- mixing electrode active particles with the redox active electrolyte, the electrode active particles functioning as an active material in an electrochemical flow capacitor storage system,
- wherein the redox active material is a reduced form, an oxidized form, or a derived form of an electrochemically active organic molecule based on a naphthalene or anthracene compound having either or both of an alcohol and an amine group.
A high-capacity slurry electrode-based flow energy storage system, comprising:
- an anode current collector and a cathode current collector, separated from each other;
- an ion permeable separation membrane disposed between the anode current collector and the cathode current collector;
- a fluid anode positioned at an electrode region between the anode current collector and the ion permeable separation membrane;
- and
- a fluid cathode positioned at an electrode region between the cathode current collector and the ion permeable separation membrane,
- wherein at least one of the anode and the cathode is a high-capacity slurry electrode,
- the high-capacity slurry electrode comprising:
- an electrolyte;
- electrode active particles, distributed in the electrolyte, functioning as an electrode active material in an electrochemical flow capacitor storage system;
- and
- a redox active material, dissolved in the electrolyte, behaving as a pseudo-capacitor through a redox reaction on a surface of the electrode active material,
- wherein the redox active material is a reduced form, an oxidized form, or a derived form of an electrochemically active organic molecule based on a naphthalene or anthracene compound having either or both of an alcohol and an amine group, and
- wherein the high-capacity slurry electrode exhibits both capacitor properties based on the electrode active particles and pseudo-capacitor properties based on the redox active material.
Dependencies are inferred from the claim text.