New device captures carbon dioxide by pumping it across a battery
The design requires less energy to capture CO 2 than current systems.
A new study led by James Buchen of the University of Delaware introduces an electrochemical carbon-capture technique that operates within a battery. Unlike previous methods that utilize filters, this innovative approach may prove to be more energy-efficient and cost-effective. The core concept behind this device involves the reaction of hydroxide at the battery's cathode with carbon dioxide, transforming it into carbonate or bicarbonate.
This compound then travels through a separator membrane to the battery's anode, where a decrease in pH triggers the reverse reaction, converting the carbonate back into carbon dioxide gas. At the anode, the hydroxide ions are consumed, completing the cycle.
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