Plant-based supercapacitor could charge electric cars in a few minutes

Researchers at Texas A&M University have created a novel plant-based energy storage device that could charge devices — even electric cars — within a few minutes. Supercapacitors have an internal architecture that is similar to basic capacitors. Both devices store charge on metal plates or electrodes. For their work, the researchers were attracted to manganese dioxide nanoparticles for designing one of the two supercapacitor electrodes.