Calendar aging of lithium metal batteries, in which cells' components degrade internally due
to chemical reactions while no current is being applied, is a relatively unstudied field. In this
work, a model to predict calendar aging of lithium metal cells is developed using two sets of
readily obtainable data: solid electrolyte interphase (SEI) layer composition (measured via X‐
ray photoelectron spectroscopy) and SEI stability (measured as a degradation rate using a
simple constant current–constant voltage charging protocol). Electrolyte properties such as …

Calendar aging of lithium metal batteries, in which cells' components degrade internally due
to chemical reactions while no current is being applied, is a relatively unstudied field. In this
work, a model to predict calendar aging of lithium metal cells is developed using two sets of
readily obtainable data: solid electrolyte interphase (SEI) layer composition (measured via X-
ray photoelectron spectroscopy) and SEI stability (measured as a degradation rate using a
simple constant current–constant voltage charging protocol). Electrolyte properties such as …