Context
Recently, Researchers developed a low-cost device that can selectively capture carbon dioxide gas while it charges.
- The device has been described in the journal Nanoscale.
About Super Capacitor Device
- It 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.
- When it discharges, the carbon dioxide can be released in a controlled way and collected to be reused or disposed of responsibly.
- It 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.
- They found that by slowly alternating the current between the plates they can capture double the amount of carbon dioxide than before.
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Significance
- The super Capacitor 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 charging-discharging process of super Capacitors potentially uses less energy than the amine heating process used in industry now.
