NOVELTY - Electrochemical conversion (200) (I) of carbon dioxide, comprises: (A1) introducing (202) a solvent to a first compartment of an electrochemical cell, where the first compartment includes an anode, and electrochemical cell includes a second compartment containing a cathode; (B1) capturing (204) carbon dioxide with at least one of guanidine, guanidine derivative, pyrimidine or pyrimidine derivative to form a carbamic zwitterion; and (C1) applying (206) an electrical potential between the anode and the cathode to reduce the carbamic zwitterion to a product mixture.    USE - The method is useful for electrochemical conversion of carbon dioxide to organic products (claimed), where the organic product includes acetaldehyde, acetate, acetic acid, acetone, 1-butanol, 2-butanol, 2-butanone, carbon, carbon monoxide, carbonates, ethane, ethanol, ethylene, formaldehyde, formate, formic acid, glycolate, glycolic acid, glyoxal, glyoxylic acid, graphite, isopropanol, lactate, lactic acid, methane, methanol, oxalate, oxalic acid, propanal, 1-propanol, and polymers containing carbon dioxide.    ADVANTAGE - The method: utilizes existing atmospheric carbon dioxide, thus allowing carbon dioxide to be renewable and essentially unlimited source of carbon; and regenerates guanidine, pyrimidine or its derivative into compartment for capturing additional carbon dioxide.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a system for electrochemical reduction of carbon dioxide, comprising the electrochemical cell including a first cell compartment, an anode positioned within the first cell compartment, the second cell compartment, the cathode positioned within the second cell compartment, the carbamic zwitterion and an energy source operably coupled with the anode and the cathode, where the energy source is configured to apply a voltage between the anode and the cathode to reduce the carbamic zwitterion at the cathode to a product mixture;    (2) electrochemical conversion (II) of carbon dioxide, comprising (A2) introducing an ionic liquid to at least one of a cathode compartment of an electrochemical cell or a mixing chamber, where the ionic liquid comprises at least one of a guanidinium-based cation or a pyrimidium-based cation, and the electrochemical cell includes an anode in an anode compartment and a cathode in the cathode compartment, (B2) capturing carbon dioxide with the ionic liquid and (C2) applying the electrical potential between the anode and the cathode sufficient for the cathode to reduce the captured carbon dioxide to the product mixture; and    (3) electrochemical conversion (III) of carbon dioxide, comprising (A3) introducing a carbon dioxide capture agent to at least one of a cathode compartment of an electrochemical cell or a mixing chamber, where the carbon dioxide capture agent comprises an organic solvent and the electrochemical cell includes the anode in the anode compartment, the cathode and a pyridine-based catalyst in the cathode compartment, (B3) capturing carbon dioxide with the carbon dioxide capture agent, and (C2) as above per se.    DESCRIPTION OF DRAWING(S) - The figure illustrates a flow diagram of a method for capturing carbon dioxide and electrochemical conversion of the carbon dioxide.    Electrochemical conversion of carbon dioxide (200)    Introducing a solvent to a first compartment of an electrochemical cell, where the first compartment includes an anode, and the electrochemical cell includes a second compartment containing a cathode (202)    Capturing carbon dioxide with at least one of guanidine, guanidine derivative, pyrimidine or pyrimidine derivative to form a carbamic zwitterion (204)    Applying an electrical potential between the anode and the cathode to reduce the carbamic zwitterion to a product mixture (206)