Friday, May 21, 2021 A major hurdle in the pursuit of sustainable fuels is a step closer to being solved thanks to a new approach to long-duration energy storage. Though more common today, the proliferation of solar power and other renewable energy sources has been limited by the cost, relative inefficiency and sheer scale required of the batteries needed for long-term energy storage. A team of scientists at the Yale Energy Sciences Institute have now described the conceptual framework for the conversion of sustainably-generated hydrogen peroxide (H2O2) for long-duration energy storage. Unlike batteries, using this liquid medium energy from the sun is stored in the form of chemical bonds.