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Metal‐Modulated Nitrogen‐Doped Carbon Electrocatalyst for Efficient Carbon Dioxide Reduction by Peng, Zhen; Huang, Yiyin; Wang, Jian; Yang, Rui; Xie, Jiafang; Wang, Yaobing is a Engineering article available to read on EtoBox.

What is Metal‐Modulated Nitrogen‐Doped Carbon Electrocatalyst for Efficient Carbon Dioxide Reduction about?

Carbon-based catalysts have been increasingly studied for electrochemical CO2 reduction, and their design is mainly focused on modulation of heteroatom dopants, of which chemical states rely highly on the synthesis approach and precursor used. In this work, we present a nitrogen-doped carbon (NC) catalyst with modulation of N assembled states by Fe particles. The synthetic NC@Fe electrocatalyst enabled efficient and durable CO2 reduction at the maximum CO Faradaic efficiency of 90.6% and 93% reservation of its initial activity after long-term electrolysis. Studies from experiments and DFT calculations indicated that Fe particles induced formation of N-doped carbon layers in NC@Fe electrocatalyst. These N-doped carbon layers provide more N-assembled domains on the surface, in which the triple graphitic N, triple pyridinic N and graphitic-pyrrolic N configurations were revealed to reduce the formation energy of key intermediates \*COOH and \*CO for efficient CO2to-CO conversion. These results are hoped to motivate more research on modulation over chemical states of heteroatoms toward synthesis of efficient carbon-based catalysts for electrocatalytic applications.

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Author

Peng, Zhen; Huang, Yiyin; Wang, Jian; Yang, Rui; Xie, Jiafang; Wang, Yaobing

Publisher

Wiley (John Wiley & Sons); John Wiley and Sons Ltd; Wiley (ISSN 2196-0216)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)