Qi Tang, Qi Hao, Qian Zhu, Junxiu Wu, Keke Huang, Kai Liu, Jun Lu
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引用次数: 0
Abstract
The metal–metal (M1–M2) interactions in heteronuclear dual-atom catalysts (HNDACs) significantly optimize the electronic properties of the active sites, resulting in the promotion of the reaction kinetics in electrocatalysis. However, the regulation mechanisms in these M1–M2 dual-atom sites still remain unclear. Herein, the intrinsic electron transfer in Fe–Zn dual-atom sites are revealed for facilitating electrocatalytic carbon dioxide reduction (ECO2R) to carbon monoxide (CO). The electronegativity difference between the Fe and Zn centers induces the specific electron transfer from Zn to Fe, which regulates the electron structures of the active Zn sites, leading to the optimized reaction pathway of CO2-to-CO conversion on these sites. The Fe–Zn HNDAC (FeZnNC) exhibits superior ECO2R performances than the single-atom Fe/Zn catalysts (FeNC and ZnNC) in the typical H-cell system, the maximum CO partial current density on FeZnNC reaches more than 3.3 and 1.8 folds of those on FeNC and ZnNC, respectively. More importantly, in a strongly acidic medium (pH = 1), FeZnNC achieves CO Faradaic efficiencies greater than 94% in the current density range of 100–400 mA cm−2. This work uncovers the intrinsic electron transfer at the heteronuclear diatomic sites, providing new insights for the rational design of high-performance HNDACs toward industrial electrocatalysis.
期刊介绍:
Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small.
With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics.
The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.