Sodium-ion batteries charge faster than lithium, offering a promising alternative for future smartphones, new research shows.

Lithium-ion batteries are miraculous. They’re strong enough to run a vehicle, and they can be recharged at any outlet. Their commercial debut, in 1991, and popularization over the next two decades, ...

They power tiny phones and two-tonne electric cars. They form the guts of a growing number of grid-storage systems that smooth the flow of electricity from wind and solar power stations. Without them, ...

Gene Berdichevsky believes in batteries. As employee number seven at Tesla, he helmed the team that designed the lithium-ion battery pack for the company’s first car, the Roadster, which convinced the ...