Researchers created a new battery design using a NTMPA, commonplace chemical found in water treatment facilities.
Researchers at the Department of Energy’s Pacific Northwest National Laboratory have created a new battery design using a commonplace chemical found in water treatment facilities. Founded in 1965, PNNL aims to address challenges in sustainable energy and national security. Their new design will cater to the growing demand for renewable energy sources like wind and solar power in the nation’s electric grid.
Another defining factor for this battery is its utilization of a unique liquid chemical formula that charges iron with a neutral-pH phosphate-based liquid electrolyte. This compound, nitrogenous triphosphate, nitrilotri-methylphosphonic acid , is commercially available due to its use in water treatment plants to inhibit corrosion.
Unlike conventional batteries, these can be deployed at any scale, from lab settings to city-wide installations, and can even serve as backup generators for the electric grid. Aaron Hollas, a study author and team leader at PNNL, highlighted the safety benefits of the aqueous flow battery system, particularly its operation at neutral pH in water. “A BESS facility using the chemistry similar to what we have developed here would have the advantage of operating in water at neutral pH,” Hollas remarked. “In addition, our system uses commercially available reagents that we have not previously investigated for use in flow batteries.
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