期刊
NANO ENERGY
卷 118, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2023.108995
关键词
Au/Ni; Electrochemical Fischer-Tropsch synthesis; Syngas; Long-chain hydrocarbons; Electrochemical CO2 reduction; Electrochemical CO reduction
The electrochemical CO2 reduction method is a green energy and environmental solution. The use of Au/Ni electrodes allows for the direct synthesis of long-chain hydrocarbons, providing a novel energy and environmental strategy.
Electrochemical (EC) CO2 reduction method has been widely used as a green energy and environmental solution strategy. The use of Au/Ni electrodes was introduced to showcase a new concept of the direct EC Fischer-Tropsch (dEC F-T) synthesis pathway. This pathway involves the combination of electrodes that produce H-2 and CO (syngas) during electrochemical CO2 reduction. The introduction of Au on the Ni electrode surface led to an increase in CO production and a gradual decrease in H-2 production. When the interface was balanced, a pronounced F-T synthesis pathway was observed, resulting in the production of a series of hydrocarbons (CnH2n and CnH2n+2, n = 2-7). The dEC F-T synthesis was evaluated under different conditions, including electrolytes, concentrations, metal supports (Co and Fe), various overlayer metals (Ag and Cu), light irradiation, and isotope effects. The process was elucidated through surface C-C coupling polymerization reactions based on Anderson-Schulz-Flory weight distribution analysis. Additionally, the F-T synthesis was demonstrated through EC CO reduction via direct CO and H adsorption. The dEC F-T path provides a novel strategy for energy and environment by producing high-value long-chain hydrocarbons.
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