Cu supraparticles with enhanced mass transfer and abundant C-C coupling sites achieving ampere-level CO2-to-C2+ electrosynthesis

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 10, 2025

The efficient electrochemical CO2 reduction to C2+ products at high current densities remains a significant challenge. Here we show inherently hydrophobic and hierarchically porous Cu supraparticles comprising sub-10 nm constituent particles for ampere-level CO2-to-C2+ electrosynthesis. These feature abundant grain boundaries selectivity, coupled with interconnected mesopores interparticle macropore cavities enhance the accessibility of active sites mass transfer, breaking trade-off between activity transfer in Cu-based catalysts. Moreover, intrinsic hydrophobicity mitigates water-flooding issue catalytic layer flow cells, improving stability densities. Consequently, achieve electrolysis up 3.2 A cm-2 Faradaic efficiency 74.9% (compared 1.21 55.4% nanoparticles) maintain 1 over 100 h. This work provides profound insights into effect coupling reaction under presents corresponding solution by superstructure design.

Language: Английский

In Situ/Operando Characterization Techniques for Reaction Interface in Electrocatalytic CO₂ Reduction

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract CO 2 reduction reaction (CO RR) has attracted considerable attention as a sustainable approach for carbon capture and conversion. However, the dynamic nature of electrocatalysts under operational conditions, particularly at interface, presents significant challenges understanding mechanisms optimizing catalyst design. In situ/operando characterization techniques are crucial to interfaces RR. This review focuses on various in employed explore interfaces, insights derived from these studies, their implications

Language: Английский