Acidic CO electroreduction for high CO utilization: catalysts, electrodes, and electrolyzers.

The electrochemical carbon dioxide (CO) reduction reaction (CORR) is considered a promising technology for converting atmospheric CO into value-added compounds by utilizing renewable energy. The CORR has developed in various ways over the past few decades, including product selectivity, current density, and catalytic stability. However, its commercialization is still unsuitable in terms of economic feasibility.

Vitamin C-induced CO capture enables high-rate ethylene production in CO electroreduction.

High-rate production of multicarbon chemicals via the electrochemical CO reduction can be achieved by efficient CO mass transport. A key challenge for C-C coupling in high-current-density CO reduction is how to promote *CO formation and dimerization. Here, we report molecularly enhanced CO-to-*CO conversion and *CO dimerization for high-rate ethylene production.