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Title: Method and system for electrochemical production of formic acid from carbon dioxide

Abstract

An electrochemical device converts carbon dioxide to a formic acid reaction product. The device includes an anode and a cathode, each comprising a quantity of catalyst. The anode and cathode each have reactant introduced thereto. Two membranes, a cation exchange polymer electrolyte membrane and an anion exchange polymer electrolyte membrane, are interposed between the anode and the cathode, forming a central flow compartment where a carbon dioxide reduction product, such as formic acid, can be recovered. At least a portion of the cathode catalyst is directly exposed to gaseous carbon dioxide during electrolysis. The average current density at the membrane is at least 20 mA/cm 2, measured as the area of the cathode gas diffusion layer that is covered by catalyst, and formate ion selectivity is at least 50% at a cell potential difference of 3.0 V. In some embodiments, at least one polymer electrolyte membrane comprises a polymer in which a constituent monomer is (p-vinylbenzyl)-R, where R is selected from the group consisting of imidazoliums, pyridiniums and phosphoniums. In some embodiments, the polymer electrolyte membrane is a Helper Membrane comprising a polymer containing an imidazolium ligand, a pyridinium ligand, or a phosphonium ligand.

Issue Date:
Research Org.:
Dioxide Materials, Inc., Boca Raton, FL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1470991
Patent Number(s):
10,047,446
Application Number:
15/260,213
Assignee:
Dioxide Materials, Inc. (Boca Raton, FL)
DOE Contract Number:  
AR-0000345; SC0004453
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Sep 08
Country of Publication:
United States
Language:
English

Citation Formats

. Method and system for electrochemical production of formic acid from carbon dioxide. United States: N. p., 2018. Web.
. Method and system for electrochemical production of formic acid from carbon dioxide. United States.
. Tue . "Method and system for electrochemical production of formic acid from carbon dioxide". United States. https://www.osti.gov/servlets/purl/1470991.
@article{osti_1470991,
title = {Method and system for electrochemical production of formic acid from carbon dioxide},
author = {},
abstractNote = {An electrochemical device converts carbon dioxide to a formic acid reaction product. The device includes an anode and a cathode, each comprising a quantity of catalyst. The anode and cathode each have reactant introduced thereto. Two membranes, a cation exchange polymer electrolyte membrane and an anion exchange polymer electrolyte membrane, are interposed between the anode and the cathode, forming a central flow compartment where a carbon dioxide reduction product, such as formic acid, can be recovered. At least a portion of the cathode catalyst is directly exposed to gaseous carbon dioxide during electrolysis. The average current density at the membrane is at least 20 mA/cm2, measured as the area of the cathode gas diffusion layer that is covered by catalyst, and formate ion selectivity is at least 50% at a cell potential difference of 3.0 V. In some embodiments, at least one polymer electrolyte membrane comprises a polymer in which a constituent monomer is (p-vinylbenzyl)-R, where R is selected from the group consisting of imidazoliums, pyridiniums and phosphoniums. In some embodiments, the polymer electrolyte membrane is a Helper Membrane comprising a polymer containing an imidazolium ligand, a pyridinium ligand, or a phosphonium ligand.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {8}
}

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