A Nitrogen-Doped Carbon Catalyst for Electrochemical CO2 Conversion to CO with High Selectivity and Current Density

Huei Ru Molly Jhong, Claire E. Tornow, Bretislav Smid, Andrew A. Gewirth, Stephen Matthew Lyth, Paul J.A. Kenis

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

We report characterization of a non-precious metal-free catalyst for the electrochemical reduction of CO2 to CO; namely, a pyrolyzed carbon nitride and multiwall carbon nanotube composite. This catalyst exhibits a high selectivity for production of CO over H2 (approximately 98 % CO and 2 % H2), as well as high activity in an electrochemical flow cell. The CO partial current density at intermediate cathode potentials (V=−1.46 V vs. Ag/AgCl) is up to 3.5× higher than state-of-the-art Ag nanoparticle-based catalysts, and the maximum current density is 90 mA cm−2. The mass activity and energy efficiency (up to 48 %) were also higher than the Ag nanoparticle reference. Moving away from precious metal catalysts without sacrificing activity or selectivity may significantly enhance the prospects of electrochemical CO2 reduction as an approach to reduce atmospheric CO2 emissions or as a method for load-leveling in relation to the use of intermittent renewable energy sources.

Original languageEnglish
Pages (from-to)1094-1099
Number of pages6
JournalChemSusChem
Volume10
Issue number6
DOIs
Publication statusPublished - Jan 1 2017

Fingerprint

Carbon Monoxide
density current
Current density
Nitrogen
Carbon
catalyst
Catalysts
Catalyst selectivity
nitrogen
carbon
Nanoparticles
Carbon Nanotubes
Carbon nitride
precious metal
Precious metals
leveling
energy efficiency
Energy efficiency
Catalyst activity
Carbon nanotubes

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

A Nitrogen-Doped Carbon Catalyst for Electrochemical CO2 Conversion to CO with High Selectivity and Current Density. / Jhong, Huei Ru Molly; Tornow, Claire E.; Smid, Bretislav; Gewirth, Andrew A.; Lyth, Stephen Matthew; Kenis, Paul J.A.

In: ChemSusChem, Vol. 10, No. 6, 01.01.2017, p. 1094-1099.

Research output: Contribution to journalArticle

Jhong, Huei Ru Molly ; Tornow, Claire E. ; Smid, Bretislav ; Gewirth, Andrew A. ; Lyth, Stephen Matthew ; Kenis, Paul J.A. / A Nitrogen-Doped Carbon Catalyst for Electrochemical CO2 Conversion to CO with High Selectivity and Current Density. In: ChemSusChem. 2017 ; Vol. 10, No. 6. pp. 1094-1099.
@article{53a01267b67c4a38b5885f1bcab8cdda,
title = "A Nitrogen-Doped Carbon Catalyst for Electrochemical CO2 Conversion to CO with High Selectivity and Current Density",
abstract = "We report characterization of a non-precious metal-free catalyst for the electrochemical reduction of CO2 to CO; namely, a pyrolyzed carbon nitride and multiwall carbon nanotube composite. This catalyst exhibits a high selectivity for production of CO over H2 (approximately 98 {\%} CO and 2 {\%} H2), as well as high activity in an electrochemical flow cell. The CO partial current density at intermediate cathode potentials (V=−1.46 V vs. Ag/AgCl) is up to 3.5× higher than state-of-the-art Ag nanoparticle-based catalysts, and the maximum current density is 90 mA cm−2. The mass activity and energy efficiency (up to 48 {\%}) were also higher than the Ag nanoparticle reference. Moving away from precious metal catalysts without sacrificing activity or selectivity may significantly enhance the prospects of electrochemical CO2 reduction as an approach to reduce atmospheric CO2 emissions or as a method for load-leveling in relation to the use of intermittent renewable energy sources.",
author = "Jhong, {Huei Ru Molly} and Tornow, {Claire E.} and Bretislav Smid and Gewirth, {Andrew A.} and Lyth, {Stephen Matthew} and Kenis, {Paul J.A.}",
year = "2017",
month = "1",
day = "1",
doi = "10.1002/cssc.201600843",
language = "English",
volume = "10",
pages = "1094--1099",
journal = "ChemSusChem",
issn = "1864-5631",
publisher = "Wiley-VCH Verlag",
number = "6",

}

TY - JOUR

T1 - A Nitrogen-Doped Carbon Catalyst for Electrochemical CO2 Conversion to CO with High Selectivity and Current Density

AU - Jhong, Huei Ru Molly

AU - Tornow, Claire E.

AU - Smid, Bretislav

AU - Gewirth, Andrew A.

AU - Lyth, Stephen Matthew

AU - Kenis, Paul J.A.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - We report characterization of a non-precious metal-free catalyst for the electrochemical reduction of CO2 to CO; namely, a pyrolyzed carbon nitride and multiwall carbon nanotube composite. This catalyst exhibits a high selectivity for production of CO over H2 (approximately 98 % CO and 2 % H2), as well as high activity in an electrochemical flow cell. The CO partial current density at intermediate cathode potentials (V=−1.46 V vs. Ag/AgCl) is up to 3.5× higher than state-of-the-art Ag nanoparticle-based catalysts, and the maximum current density is 90 mA cm−2. The mass activity and energy efficiency (up to 48 %) were also higher than the Ag nanoparticle reference. Moving away from precious metal catalysts without sacrificing activity or selectivity may significantly enhance the prospects of electrochemical CO2 reduction as an approach to reduce atmospheric CO2 emissions or as a method for load-leveling in relation to the use of intermittent renewable energy sources.

AB - We report characterization of a non-precious metal-free catalyst for the electrochemical reduction of CO2 to CO; namely, a pyrolyzed carbon nitride and multiwall carbon nanotube composite. This catalyst exhibits a high selectivity for production of CO over H2 (approximately 98 % CO and 2 % H2), as well as high activity in an electrochemical flow cell. The CO partial current density at intermediate cathode potentials (V=−1.46 V vs. Ag/AgCl) is up to 3.5× higher than state-of-the-art Ag nanoparticle-based catalysts, and the maximum current density is 90 mA cm−2. The mass activity and energy efficiency (up to 48 %) were also higher than the Ag nanoparticle reference. Moving away from precious metal catalysts without sacrificing activity or selectivity may significantly enhance the prospects of electrochemical CO2 reduction as an approach to reduce atmospheric CO2 emissions or as a method for load-leveling in relation to the use of intermittent renewable energy sources.

UR - http://www.scopus.com/inward/record.url?scp=84995543278&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84995543278&partnerID=8YFLogxK

U2 - 10.1002/cssc.201600843

DO - 10.1002/cssc.201600843

M3 - Article

C2 - 27791338

AN - SCOPUS:84995543278

VL - 10

SP - 1094

EP - 1099

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 6

ER -