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Updated: Mar 31, 2026

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
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Operando Strain Modulation Amplifies Asymmetric C─C Coupling for CO-to-Acetate Transformation.

Qiao Zhang1, Pengwei Cheng1, Zhiming Wei1

  • 1The Institute for Advanced Studies, Wuhan University, Wuhan, China.

Small (Weinheim an Der Bergstrasse, Germany)
|March 29, 2026
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Summary

Engineers developed a new electrocatalyst for carbon monoxide reduction reaction (CORR) to produce acetate. This strain-engineered copper oxide catalyst achieves high efficiency and current density for industrial applications.

Keywords:
CO reduction reactionacetateelectrocatalysisreaction mechanismsstrain modulation

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • Electrochemical carbon monoxide reduction reaction (CORR) is a promising route for sustainable chemical production, like acetate.
  • Current CORR systems face limitations in selectivity and current density, hindering industrial viability.
  • Electrocatalyst design is crucial for improving CORR performance.

Purpose of the Study:

  • To develop an operando strain engineering strategy for electrocatalyst design.
  • To enhance the performance of copper oxide (Cu2O) based electrocatalysts for CORR.
  • To improve acetate production selectivity and current density.

Main Methods:

  • Operando strain engineering by introducing aluminum (Alδ+) into Cu2O lattice.
  • Electrochemical characterization in a flow cell.
  • In situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS).
  • Density functional theory (DFT) calculations.

Main Results:

  • Al (0.5)/Cu2O catalyst demonstrated a partial current density of 198 mA cm⁻² and 60% Faradaic efficiency for acetate production.
  • Operando strain engineering induced tensile strain in Cu2O, which was reduced to metallic Cu.
  • ATR-SEIRAS and DFT confirmed enhanced *CO and *CHO adsorption and facilitated *CO-*CHO coupling.

Conclusions:

  • Strain engineering of Cu2O by Al introduction is an effective strategy to boost CORR performance.
  • The developed catalyst shows significant potential for industrial acetate production.
  • Understanding intermediate adsorption and coupling mechanisms is key for catalyst optimization.