Amorphous CeO2–Cu Heterostructure Enhances CO2 Electroreduction to Multicarbon Alcohols
Journal Article
·
· ACS Materials Letters
- Univ. of California, Santa Cruz, CA (United States); Shandong Univ., Weihai (China)
- Univ. of California, Santa Cruz, CA (United States)
- Jiangnan Univ., Zhenjiang (China)
- Univ. of California, Merced, CA (United States)
- Shandong Univ., Jinan (China)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Electrochemical conversion of carbon dioxide (CO2) gas to value-added chemicals such as multicarbon (C2+) alcohols is a promising and attractive decarbonization strategy. However, there are tremendous challenges in tuning the intrinsic activity and selectivity of the catalysts to produce C2+ alcohols. In this work, we prepared a CeO2–Cu composite catalyst via a combination of metallurgy and dealloying method. The interfacial sites of amorphous CeO2–Cu heterostructure improve the adsorption of key reaction intermediates *CO and promote the C–C coupling. Significantly, they also stabilize *CH2CHO at the bifurcation step, steering the reaction pathway toward the formation of C2+ alcohols over ethylene. The CeO2–Cu catalyst achieves a remarkable faradaic efficiency of 32.9% ± 2.6% for C2+ alcohols at -0.6 V vs RHE. Overall, this work demonstrates an effective strategy of improving the intrinsic activity and selectivity of the Cu-based catalysts for the generation of C2+ alcohols.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- Merced nAnomaterials Center for Energy and Sensing (MACES); USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1903453
- Report Number(s):
- LLNL-JRNL-835770; 1054952
- Journal Information:
- ACS Materials Letters, Journal Name: ACS Materials Letters Journal Issue: 10 Vol. 4; ISSN 2639-4979
- Publisher:
- ACS PublicationsCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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