Toshiba Corporation has developed a lithium-ion secondary battery that
can be charged up to 80% of its total capacity in only 1 minute. In
addition to the conventional capabilities of the lithium-ion secondary
battery, this battery has also achieved charge-discharge behavior that
is equivalent to that of the electric double layer capacitor. A test
cell for high-power output realized the volumetric energy density of
150 – 250 Wh/L and the volumetric output density of 10kW/L.