Method and system for electrochemical-based carbon capture and sequestration/valorization
AssigneeThe Board of Trustees of the University of Illinois
InventorsKyle Christopher Smith, Aniruddh Shrivastava
Life of this patent
Estimating the term…
Abstract
Aspects of the subject disclosure may include, for example, an electrochemical apparatus, comprising a pair of electrodes each composed of an intercalation host compound (IHC), a separator disposed between the pair of electrodes, and a controller configured to control cycling of the electrochemical apparatus, wherein the pair of electrodes is configured to undergo, during the cycling, reduction-oxidation (redox) reactions in electrolyte solutions that facilitate capturing of carbon dioxide (CO2) and release of captured CO2. Additional embodiments are disclosed.
Claims20
An electrochemical apparatus, comprising:
- a pair of electrodes each composed of an intercalation host compound (IHC);
- a separator disposed between the pair of electrodes;
- and
- a controller configured to control cycling of the electrochemical apparatus, wherein the pair of electrodes is configured to undergo, during the cycling, reduction-oxidation (redox) reactions in electrolyte solutions that facilitate capturing of carbon dioxide (CO2) and release of captured CO2.
An electrochemical cell, comprising:
- a first electrode composed of a first intercalation host compound (IHC);
- a second electrode composed of a second IHC;
- and
- a control circuit configured to manage cycling of the electrochemical cell, wherein the first electrode and the second electrode undergo, in various stages of the cycling, reduction-oxidation (redox) reactions in an alkaline electrolyte solution that facilitate dissolution of carbon dioxide (CO2) and liberation of captured CO2.
A method for operating an electrochemical cell having a first electrode and a second electrode, the method comprising, in a first cycle of the electrochemical cell:
- providing a current to, or a potential difference across, the first electrode and the second electrode;
- and
- causing a first alkaline electrolyte solution to flow through at least a portion of the electrochemical cell such that the first electrode and the second electrode undergo reactions, resulting in under-saturation in dissolved inorganic carbon (DIC) in the first alkaline electrolyte solution or resulting in an alkaline power of hydrogen (pH) swing in the first alkaline electrolyte solution that facilitates dissolution of carbon dioxide (CO2) into the first alkaline electrolyte solution.
Dependencies are inferred from the claim text.