Toyota secures huge lead in solid-state battery patents

Jul 07 (Nikkei) - Toyota Motor is by far the leading holder of solid-state battery patents, a Nikkei study shows, demonstrating how Japanese companies have dominated the race to develop the next-generation power source for electric vehicles.

Solid-state batteries do away with liquid electrolytes used in conventional lithium-ion batteries. TDK and other companies have already put miniature solid-state batteries on the market, but solid-state batteries for EVs are still in the prototype stage.

It is expected that solid-state batteries will double the driving distance and take a third of the time to recharge. The batteries are also known to reduce fire risks.

One major hurdle facing solid-state batteries is cost. A solid-state battery is more than four times more expensive than a typical lithium-ion battery, according to some estimates. ...continue reading

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