| Autor: |
Nattaphon Hongrutai, Saurav Ch Sarma, Yuxiang Zhou, Simon Kellner, Angus Pedersen, Kari Adourian, Helen Tyrrell, Mary P Ryan, Joongjai Panpranot, Jesús Barrio |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
JPhys Materials, Vol 7, Iss 1, p 015007 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2515-7639 |
| DOI: |
10.1088/2515-7639/ad0d7c |
| Popis: |
Tandem CO _2 reduction electrocatalysts that combine a material that selectively produces CO with Cu are capable of producing hydrocarbons at low overpotentials and high selectivity. However, controlling the spatial distribution and the catalytic activity of the CO-making catalyst remains a challenge. In this work, a novel tandem electrocatalyst that overcomes limitations of simple Cu catalysts, namely selectivity and efficiency at low overpotential, is presented. The tandem electrocatalysts are prepared through a sequential spray coating protocol, using a single atom Fe in N-doped C (FeNC) as the selective CO-producing catalyst and commercial Cu nanopowder. The high faradaic efficiency towards CO of FeNC (99% observed at −0.60 V vs. RHE) provides a high CO coverage to the Cu particles, leading to reduced hydrogen evolution and the selective formation of ethanol and n -propanol at a much low overpotential than that of bare Cu. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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