A Non-Noble Metal Catalyst-Based Electrolyzer for Efficient CO₂-to-Formate Conversion
| dc.contributor.author | Zou, J. | |
| dc.contributor.author | Lee, C.-Y. | |
| dc.contributor.author | Wallace, G.G. | |
| dc.date.issued | 2021 | |
| dc.description.abstract | Electrochemical CO₂ reduction offers a promising approach to alleviate environmental and climate impacts attributed to increasing atmospheric CO₂. Intensive research work has been performed over the years on catalysts, membranes, and other associated components related to the development of CO₂ electrolyzers. Herein, we assembled a full cell comprising a Bi nanoparticle (NP)-based cathode for reducing CO₂ to formate and the earth-abundant NiFe layered double hydroxide (LDH)-based anode for oxygen evolution. The electrolyte used was 1 M KOH, and an anion exchange membrane separator was employed. A formate conversion Faradaic efficiency (FEformate) of 90 ± 2% was obtained at the cell voltage of 2.12 V. This full cell system operating at 2.12 V was found to perform well over 10 h, as the FEformate remained above 85% with ∼82% retention of current. This is among the best performing CO₂-to-formate conversion systems based on all non-precious metal catalysts. The low water oxidation overpotential of NiFe LDH, coupled with the highly efficient Bi NPs CO₂ reduction catalyst, and the use of KOH electrolyte operated under flow cell configuration that maximizes the reactant/product mass transfer all contribute to this high-performance electrolyzer. | |
| dc.description.statementofresponsibility | Jinshuo Zou, Chong-Yong Lee, and Gordon G. Wallace | |
| dc.identifier.citation | ACS Sustainable Chemistry and Engineering, 2021; 9(48):16394-16402 | |
| dc.identifier.doi | 10.1021/acssuschemeng.1c06295 | |
| dc.identifier.issn | 2168-0485 | |
| dc.identifier.issn | 2168-0485 | |
| dc.identifier.uri | https://hdl.handle.net/2440/146157 | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society (ACS) | |
| dc.relation.grant | http://purl.org/au-research/grants/arc/CE 140100012 | |
| dc.rights | © 2021 American Chemical Society | |
| dc.source.uri | https://doi.org/10.1021/acssuschemeng.1c06295 | |
| dc.subject | full cell; CO2 reduction; formate; Bi nanoparticles; NiFe layered double hydroxide | |
| dc.title | A Non-Noble Metal Catalyst-Based Electrolyzer for Efficient CO₂-to-Formate Conversion | |
| dc.type | Journal article | |
| pubs.publication-status | Published |