Researchers design novel hollow-fiber Cu penetration electrode for efficient CO₂ charging

Electrochemical conversion of CO₂ Value-added chemical fuels powered by renewable electrical energy play a role in reducing net CO₂ In addressing emissions and energy consumption.

Although significant improvement in CO₂ Voltage, carbonate formation can cause extreme CO₂ Loss. CO₂ Switching to an acidic electrolyte is an attractive way to overcome the problem of CO₂ Loss, however, is a challenge for selective reduction.

In a study published in Energy and Environmental SciencesA research group at the Shanghai Advanced Research Institute (SARI) of the Chinese Academy of Sciences designed a Cu hollow fiber penetration electrode to reduce CO discharge.₂ in strong acid with effective inhibition of the hydrogen evolution reaction (HER).

Cu hollow fiber due to the unique penetration effect induced by abundant CO₂ molecules were delivered to Cu active sites. Sufficiently high CO is present on the Cu surface₂ coverage, which subdued her and eased the CO₂ Reduction to C₂⁺ products.

Therefore, a CO₂ A single-pass conversion rate of over 51% with a C₂⁺ The faradaic efficiency is 73.4% and the partial current density is 2.2 A cm.^-2 was achieved in acidic solution (pH = 0.71). The performance of the Cu permeation electrode approximated or exceeded that of state-of-the-art Cu-based catalysts.

This work represents progress in the design and development of new electrode structures for sensing CO₂ Charge to higher value C₂⁺ Chemicals with quantifiable applications.