Researchers at the University of Cambridge have developed a battery-like device that may take us a step closer to solving the carbon emissions problems in today’s world. This supercapacitor can selectively absorb CO2 during its charging process. As the battery-like device discharges, it releases carbon dioxide in a controlled manner so that it can be collected for reuse or disposed of later.
According to a EurekAlert article, nearly 35 billion tons of carbon dioxide are released into the atmosphere every year. Therefore, the world urgently needs solutions to eliminate these emissions in order to solve the problems of climate change.
Efforts have been made in this direction to control, capture, reuse and eliminate carbon emissions from the atmosphere. But the most advanced technologies in this area consume a lot of energy and are very expensive. The supercapacitor at the University of Cambridge was designed to capture and store carbon using inexpensive technology.
The supercapacitor is as small as a coin. It is partially made from sustainable materials such as coconut shells and seawater. Grace Mapstone, the study’s co-author, said: “The best part is that the materials used to make supercapacitors are cheap and plentiful. The electrodes are made of carbon derived from coconut shell waste.”
dr Alexander Forse from the Yusuf Hamied Department of Chemistry in Cambridge led the research. He said: “We found that by slowly alternating the current between the plates, we can capture twice as much CO2 as before.” Industry used amine heating process. Our next questions will be to study and improve the exact mechanisms of CO2 capture. Then it will be a matter of scaling.”
The research paper, published in the journal Nanoscale, describes the supercapacitor. It uses two electrodes with positive and negative charge. Unlike a rechargeable battery, it does not use chemical reactions to store energy. Instead, it stores energy through the movement of electrons between the electrode plates. This gives it a longer lifespan.
Grace Mapstone said: “We want to use materials that are inert, do not harm the environment and that we have to dispose of less often. For example, the CO2 dissolves in a water-based electrolyte, which is essentially seawater.”
https://gadgets360.com/science/news/battery-absorb-carbon-dioxide-co2-gas-while-charge-supercapacitor-university-cambridge-3000753 This battery-like device can absorb carbon dioxide while charging