Korean researchers make cost breakthrough in electrochemical CO2 Reduction via recyclable CuZn electrodes

In South Korea, researchers at Chungnam National University, South Korea, have discovered how copper-zinc electrodes adapt and stabilize during electrochemical CO₂ reduction. This groundbreaking study led by Professor Youngku Sohn reveals that CuZn electrodes outperform single-metal alternatives, producing valuable hydrocarbons while maintaining efficiency over multiple recycling cycles. These insights could revolutionize carbon capture and conversion technologies, offering a sustainable solution to combat CO₂ emissions and address energy challenges.

A researcher’s team at Chungnam National University has unlocked new potential for copper-zinc  electrodes in electrochemical CO₂ reduction. This research, led by Professor Youngku Sohn, explores the performance and recyclability of CuZn electrodes, comparing them with single-metal alternatives like copper and zinc, and highlighting their superior catalytic properties. This research was published on October 15, 2024, and was published in Volume 670 of the journal Applied Surface Science.

“Electrochemical methods present a promising solution for repurposing CO₂, but electrode stability has always been challenging,” says Prof. Sohn.

The team utilized advanced techniques such as depth-profiling X-ray photoelectron spectroscopy (XPS) to track the changes in oxidation states and compositions of the electrodes. This method revealed that the CuZn electrodes not only stabilize over time but also exhibited a superior ability to maintain selectivity for complex hydrocarbons compared to the single-metal electrodes.

While the study marks a significant milestone, further research is needed to optimize the scalability of these electrodes for industrial applications. The team’s next step is to examine these electrodes under real-world conditions to understand their capabilities better.

More on the story.