articleJournal of the American Chemical SocietyMar 20, 2023Closed access

Modulation of *CH x O Adsorption to Facilitate Electrocatalytic Reduction of CO 2 to CH 4 over Cu-Based Catalysts

JZJing ZhaoPZPeng ZhangTYTenghui YuanDCDongfang ChengSZShiyu Zhen

Tianjin University · Collaborative Innovation Center of Chemical Science and Engineering Tianjin · +2 more institutions

PubMed
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Abstract

Copper (Cu) can efficiently catalyze the electrochemical CO2 reduction reaction (CO2RR) to produce value-added fuels and chemicals, among which methane (CH4) has drawn attention due to its high mass energy density. However, the linear scaling relationship between the adsorption energies of *CO and *CHxO on Cu restricts the selectivity toward CH4. Alloying a secondary metal in Cu provides a new freedom to break the linear scaling relationship, thus regulating the product distribution. This paper describes a controllable electrodeposition approach to alloying Cu with oxophilic metal (M) to steer the reaction pathway toward CH4. The optimized La5Cu95 electrocatalyst exhibits a CH4 Faradaic efficiency of 64.5%,…

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269
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100%
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Authors

9

Topics & keywords

Topics
Keywords
  • Chemistry
  • Faraday efficiency
  • Adsorption
  • Electrocatalyst
  • Catalysis
  • Selectivity
  • Electrochemistry
  • Copper
UN Sustainable Development Goals
  • Affordable and clean energy
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