articleACS Energy LettersJan 14, 2022Closed access

Precisely Constructing Orbital Coupling-Modulated Dual-Atom Fe Pair Sites for Synergistic CO 2 Electroreduction

YWYing WangBJByoung Joon ParkVKVinod K. PaidiRHRui HuangYLYechan Lee

Pohang University of Science and Technology · Pohang Accelerator Laboratory

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Abstract

Electrochemical reduction of CO2 (CO2RR) provides an attractive pathway to achieve a carbon-neutral energy cycle. Single-atom catalysts (SAC) have shown unique potential in heterogeneous catalysis, but their structural simplicity prevents them from breaking linear scaling relationships. In this study, we develop a feasible strategy to precisely construct a series of electrocatalysts featuring well-defined single-atom and dual-site iron anchored on nitrogen-doped carbon matrix (Fe1–N–C and Fe2–N–C). The Fe2–N–C dual-atom electrocatalyst (DAC) achieves enhanced CO Faradaic efficiency above 80% in wider applied potential ranges along with higher turnover frequency (26,637 h–1) and better durability compared to…

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Topics & keywords

Topics
Keywords
  • Antibonding molecular orbital
  • Electrocatalyst
  • Faraday efficiency
  • Atom (system on chip)
  • Chemistry
  • Catalysis
  • Electrochemistry
  • Carbon fibers
UN Sustainable Development Goals
  • Affordable and clean energy
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