Cu metal embedded in oxidized matrix catalyst to promote CO2 activation and CO dimerization for electrochemical reduction of CO2
Journal Article
·
· Proceedings of the National Academy of Sciences of the United States of America
- California Inst. of Technology (CalTech), Pasadena, CA (United States); Materials and Process Simulation Center and Joint Center for Artificial Photosynthesis, California Institute of Technology, Pasadena, CA 91125
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
We propose and validate with quantum mechanics methods a unique catalyst for electrochemical reduction of CO2 (CO2RR) in which selectivity and activity of CO and C2 products are both enhanced at the borders of oxidized and metallic surface regions. This Cu metal embedded in oxidized matrix (MEOM) catalyst is consistent with observations that Cu2O-based electrodes improve performance. However, we show that a fully oxidized matrix (FOM) model would not explain the experimentally observed performance boost, and we show that the FOM is not stable under CO2 reduction conditions. This electrostatic tension between the Cu+ and Cu0 surface sites responsible for the MEOM mechanism suggests a unique strategy for designing more efficient and selective electrocatalysts for CO2RR to valuable chemicals (HCOx), a critical need for practical environmental and energy applications.
- Research Organization:
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0004993
- OSTI ID:
- 1465782
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 26 Vol. 114; ISSN 0027-8424
- Publisher:
- National Academy of Sciences, Washington, DC (United States)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electrodeposited Sn–Cu@Sn dendrites for selective electrochemical CO2 reduction to formic acid
Oxidation State and Surface Reconstruction of Cu under CO2 Reduction Conditions from In Situ X-ray Characterization
Metal-ligand catalysts for selective promotion of electrochemical CO2RR
Journal Article
·
Wed Jun 01 20:00:00 EDT 2022
· Nanoscale
·
OSTI ID:1887570
Oxidation State and Surface Reconstruction of Cu under CO2 Reduction Conditions from In Situ X-ray Characterization
Journal Article
·
Wed Dec 30 19:00:00 EST 2020
· Journal of the American Chemical Society
·
OSTI ID:1764558
Metal-ligand catalysts for selective promotion of electrochemical CO2RR
Patent
·
Tue Jul 11 00:00:00 EDT 2023
·
OSTI ID:2221959