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Synergistic Electrochemical Co2 Reduction and Water Oxidation With a Bipolar Membrane

Synergistic Electrochemical Co2 Reduction and Water Oxidation With a Bipolar Membrane, David A. Vermaas and Wilson A. Smith. Acs Energy Letters 2016, 1  (6), 1143–1148.

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Abstract

The electrochemical conversion of CO2 and water to value-added products still suffers from low efficiency, high costs, and high sensitivity to electrolyte, pH, and contaminants. Here, we present a strategy for this reaction using a silver catalyst for CO, reduction in a neutral catholyte, separated by a bipolar membrane from a nickel iron hydroxide oxygen evolution catalyst in a basic anolyte. This combination of electrolytes provides a favorable environment for both catalysts and shows the effective use of bicarbonate and KOH to obtain low cell voltages. This architecture brings down the total cell voltage by more than 1 V compared to that with conventional use of a Pt counter electrode and monopolar membranes, and at the same time, it reduces contamination and improves stability at the cathode.

BibTeX

@article{ ISI:000390086400011,
Author = {Vermaas, David A. and Smith, Wilson A.},
Title = {Synergistic Electrochemical Co2 Reduction and Water Oxidation With a Bipolar Membrane},
Journal = {Acs Energy Letters},
Year = {2016},
Volume = {1},
Number = {6},
Pages = {1143-1148},
Month = {},
Abstract = {The electrochemical conversion of CO2 and water to value-added products still suffers from low efficiency, high costs, and high sensitivity to electrolyte, pH, and contaminants. Here, we present a strategy for this reaction using a silver catalyst for CO, reduction in a neutral catholyte, separated by a bipolar membrane from a nickel iron hydroxide oxygen evolution catalyst in a basic anolyte. This combination of electrolytes provides a favorable environment for both catalysts and shows the effective use of bicarbonate and KOH to obtain low cell voltages. This architecture brings down the total cell voltage by more than 1 V compared to that with conventional use of a Pt counter electrode and monopolar membranes, and at the same time, it reduces contamination and improves stability at the cathode.},
DOI = {10.1021/acsenergylett.6b00557},
ISSN = {2380-8195},
ResearcherID-Numbers = {Smith, Wilson/B-8626-2012},
ORCID-Numbers = {Smith, Wilson/0000-0001-7757-5281},
Unique-ID = {ISI:000390086400011},
}

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