Insights from Lithium Stripping Dynamics on Fast Charging

Safe and reliable fast charging of lithium-ion batteries is contingent upon the development of facile methods of detection and quantification of lithium plating. Among the leading candidates for online lithium plating detection is analysis of the voltage plateau observed during the rest or discharge phase ensuing a charge. In this work, an operando metric, ‘S-factor,’ is developed from electrochemical data to quantitatively analyze the severity of lithium plating over a range of charge rates and temperatures. An in-situ visualization method is employed to study the physical mechanisms and phase transitions occurring at the graphite electrode during the voltage plateau.

High-efficiency, anode-free lithium-metal batteries with a close-packed homogeneous lithium morphology

Anode-free lithium-metal batteries (LMBs) are ideal candidates for high-capacity energy storage as they eliminate the need of a conventional graphite electrode or excess lithium-metal anode. Current anode-free LMBs suffer from...