Breakthrough CO2-fueled generator turns greenhouse gas into electricity | Researchers claim that they were able to capture approximately 1 percent of the inherent energy contained within CO2 gas.
Breakthrough CO2-fueled generator turns greenhouse gas into electricity | Researchers claim that they were able to capture approximately 1 percent of the inherent energy contained within CO2 gas.
Sounds like less of a generator and more a novel type of carbon capture with a reversible reaction that manages to produce a small current (basically functioning like a weak battery due to ion exchange). Seems neat though. I wonder how it compares to other carbon capture strategies and how well it would scale up.
> The observed ISC decay necessitates a proper regeneration method to ensure the reusability of NAH electricity generator. Referring to the Bjerrum plot, the adsorbed CO2 presents mainly as HCO3- ions in the pH range from 6.0 to 9.0. Considering the aqueous environment of the NAH electricity generator, the commonly adopted pH-swing strategy should be able to remove CO2 and regenerate NAH electricity generator5,8. During the pH swing desorption process, HCO3- ions can transition into CO32- ions if the pH value is increased above 10.0, allowing sequestration by reacting with Ca2+ to form CaCO3 precipitates25. Alternatively, lowering the pH value below 4.0 converts HCO3- ions into CO2 gas, which can be harvested for utilization
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Sounds like less of a generator and more a novel type of carbon capture with a reversible reaction that manages to produce a small current (basically functioning like a weak battery due to ion exchange). Seems neat though. I wonder how it compares to other carbon capture strategies and how well it would scale up.
> The observed ISC decay necessitates a proper regeneration method to ensure the reusability of NAH electricity generator. Referring to the Bjerrum plot, the adsorbed CO2 presents mainly as HCO3- ions in the pH range from 6.0 to 9.0. Considering the aqueous environment of the NAH electricity generator, the commonly adopted pH-swing strategy should be able to remove CO2 and regenerate NAH electricity generator5,8. During the pH swing desorption process, HCO3- ions can transition into CO32- ions if the pH value is increased above 10.0, allowing sequestration by reacting with Ca2+ to form CaCO3 precipitates25. Alternatively, lowering the pH value below 4.0 converts HCO3- ions into CO2 gas, which can be harvested for utilization