TOKYO -- Imagine electric cars that can travel 700km to 800km on a single charge, twice as far as they do today. Imagine batteries that are smaller, safer and pack more punch than the lithium-ion cells that power our gadgets now.
Such is the promise of solid-state batteries. Capable of holding more electricity and recharging more quickly than their lithium-ion counterparts, they could do to lithium-ion power cells what transistors did to vacuum tubes: render them obsolete.
