2020 R&D 100 Award: Solid Lithium Battery

2020 R&D 100 Award: Solid Lithium Battery

October 05, 2020

Award Recipient(s) 

Marca Doeff, Guoying Chen, Eongyu Yi


Solid Lithium Battery (SLiB) Using Hard and Soft Solid Electrolytes
The lithium battery market is expected to grow from more than $37 billion in 2019 to more than $94 billion by 2025. However, the liquid electrolytes used in most commercial lithium-ion batteries are flammable and limit the ability to achieve higher energy densities. Safety issues continue to plague the electronics markets, as often-reported lithium battery fires and explosions result in casualties and financial losses.
In Berkeley Lab’s solid lithium battery, the organic electrolytic solution is replaced by two solid electrolytes, one soft and one hard, and lithium metal is used in place of the graphite anode. In addition to eliminating battery fires, incorporation of a lithium metal anode with a capacity 10 times higher than graphite (the conventional anode material in lithium-ion batteries) provides much higher energy densities.
The technology was developed by Berkeley Lab scientists Marca Doeff, Guoying Chen, and Eongyu Yi, along with collaborators at Montana State University.

(from left) Marca Doeff, Guoying Chen, and Eongyu Yi (Credit: Berkeley Lab)