FORMATION OF PHOSPHORUS-RICH SOLID ELECTROLYTE INTERPHASE

Various examples disclosed relate to formation of phosphorous-rich solid electrolyte interphases in lithium metal batteries via phosphorous pentoxide additives. The present disclosure includes a battery cell including an anode comprising a lithium metal, a cathode, and an electrolyte with an additive. The electrolyte can include lithium hexafluorophosphate and the additive can include phosphorous pentoxide.