Researchers crack a key problem with sodium-ion batteries for electric vehicles and grid energy storage

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Artistic rendering illustrating the key finding that lowering the heat-up rate during cathode preparation for sodium-ion batteries eliminated the strain and cracking problem in core-shell particles with a concentration gradient. Credit: Argonne National Laboratory.

Lithium-ion batteries have long dominated the market as the go-to power source for electric vehicles. They are also increasingly being considered for storage of renewable energy to be used on the electric grid. However, with the rapid expansion of this market, supply shortages of lithium are projected within the next five to 10 years.

“Sodium-ion batteries are emerging as a compelling alternative to lithium-ion batteries due to the greater abundance and lower cost of sodium,” said Gui-Liang Xu, a chemist at the U.S. Department…

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