Aqueous redox flow batteries with mild pH decoupling

https://techxplore.com/news/2024-03-aqueous-batteries-mild-ph-decoupling.html

"safety, long lifetime, high power capacity, low cost... mildly acidic and mildly alkaline electrolytes reduce crossover to <0.3 nmol s-1 cm-2, achieving open-circuit energy efficiency >1.7 V...  acid–base regeneration system to periodically restore electrolytes to initial pH... combined system capacity fade rate <0.07% /day, round-trip energy efficiency >85%, Coulombic efficiency 99% during stable operation >week... higher voltage output and lower resistance further improves performance... for EVs, PV, wind, grid storage"

Related: Researchers develop high-energy-density aqueous battery based on halogen multi-electron transfer
https://techxplore.com/news/2024-04-high-energy-density-aqueous-battery.html