Battery-like device that captures carbon dioxide while charging

Subject : Science and tech

Section : Technology

Context :

The supercapacitor device, which is similar to a rechargeable battery, is the size of a coin, and is made in part from sustainable materials including coconut shells and seawater.
Researchers have developed a low-cost device that can selectively capture carbon dioxide gas while it charges.
Then, when it discharges, the carbon dioxide can be released in a controlled way and collected to be reused or disposed of responsibly.
The supercapacitor could help power carbon capture and storage technologies at much lower cost.
The most advanced carbon capture technologies currently require large amounts of energy and are expensive.
The supercapacitor consists of two electrodes of positive and negative charge.
The team tried alternating from a negative to a positive voltage to extend the charging time from previous experiments. This improved the supercapacitor’s ability to capture carbon.