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

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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.

More information:
Chang Zhu et al., Selected CO2 Charges above 2 A cm for multicarbon products−2 in strong acids via a hollow-fiber Cu penetration electrode, Energy and Environmental Sciences (2023) DOI: 10.1039/D3EE02867D

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Energy and Environmental Sciences


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