Energy-storage and power-density ranges of common energy storage media. Hatched areas (LIB, TNT explosive and fossil fuel) identify potentially unsafe carriers of electrochemical or chemical energy that may catch on fire or explode in hostile environments. Unlike in other energy carriers, release of record energy amounts stored in chemical bonds of fossil fuels and explosives is irreversible. , Power density of TNT explosive, ~ 6.2 x 10 11 W kg -1 . We graphically distinguished non-cyclable from cyclable storage media and identified potential safety risks.
