Commentators thus far seem mainly interested in applications in cars, in the event this ever makes it out of the lab.
Frankly, cars are not the big deal here. Existing battery technology is good enough for most light vehicle applications, and continues to incrementally improve. A lithium-air battery car could be even better and would solve most of the edge cases (the people who want to tow horse floats across the country at 70mph, for instance, or for lightweight electric sports cars).
However, this would be a transformative technology for electric aviation.
Delivery drones double or triple their useful range. Air taxis go from pushing the limits of structural engineering to being easily doable. Short-haul all-electric airliners become plausible.
Frankly, cars are not the big deal here. Existing battery technology is good enough for most light vehicle applications, and continues to incrementally improve. A lithium-air battery car could be even better and would solve most of the edge cases (the people who want to tow horse floats across the country at 70mph, for instance, or for lightweight electric sports cars).
However, this would be a transformative technology for electric aviation.
Delivery drones double or triple their useful range. Air taxis go from pushing the limits of structural engineering to being easily doable. Short-haul all-electric airliners become plausible.