TOKYO -- Panasonic plans to boost the energy density of the battery cells it supplies to Tesla by 20 percent in five years and commercialize a cobalt-free version "in two to three years," the head of its U.S. EV battery business said.
This is the first time Panasonic, a leading cell provider for the world's top electric vehicle maker, Tesla, has outlined these targets, putting down a marker in a highly competitive sector to stay ahead of the game.
Panasonic introduced the so-called "2170" lithium-ion cells, with the nickel-cobalt-aluminum cathode chemistry, for Tesla's Model 3 in 2017.
Researchers say it already has the highest energy density at above 700 watt-hour per liter.
With an even higher density, these cells could help increase how much an EV can run on a single charge, while also paving the way for smaller batteries and roomier car interiors.
A cobalt-free version, on the other hand, would cut reliance on a costly and controversial com…