Solid-state silicon batteries could last longer and charge faster
 

Researchers from UC San Diego, supported by LG Energy, have made a promising discovery that involves two popular types of battery tech. They created a solid-state battery with an all-silicon anode that could potentially deliver long life, high energy density and fast charging — potentially making EVs cheaper and more practical.

Silicon is a highly desirable anode material as it has over ten times the energy density of current graphite anodes. The problem is that silicon anodes tend to expand and degrade quickly as a battery charges and discharges, particularly with the liquid electrolytes currently used in lithium-ion cells. That issue has helped keep them out of commercial batteries.

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