Highlights: The Harvard team reports that the battery, which they say can be applied on a power-grid scale, uses naturally abundant and small organic compounds

Highlights: The Harvard team reports that the battery, which they say can be applied on a power-grid scale, uses naturally abundant and small organic compounds called quinones rather than electrocatalysts [A] conventional metal-reliant flow battery costs an estimated $700 per kilowatt-hour of storage capacity, whereas the Harvard team's metal-free technology would bring those costs down to $27 per kilowatt-hour.