EEStor claims that its system, a kind of battery-ultracapacitor hybrid based on barium-titanate powders, will dramatically outperform the best lithium-ion batteries on the market in terms of energy density, price, charge time, and safety.

Such a breakthrough would have the potential to radically transform the transportation sector, improve the performance of intermittent energy sources such as wind and sun, and increase the efficiency and stability of power grids–all while fulfilling an oil-addicted America’s quest for energy security.