In February, President Barack Obama told the crowd at a Henderson, Nev., high school that not so long ago, the U.S. made barely 2% of the advanced batteries used in the world's electric vehicles. Now, thanks to a multibillion-dollar federal investment, American companies are positioned to increase production tenfold and potentially control 40% of the global lithium-ion-battery market by 2015. "We've created an entire new industry," Obama said.
Not quite, but certainly the beginnings of one. Demand for lithium-ion batteries is increasing dramatically as electric-car technology improves and prices drop. Nissan has introduced the all-electric Leaf, and this year Chevy...