Obrovac, MNYoung, R. S.Scott, B.Wei, Congxiao2022-08-152022-08-152020-12-10Robert S. Young, Benjamin Scott, Congxiao Wei and M. N. Obrovac. LiF as an Alloy Component or Slurry Additive in Si-Alloy Anodes. J. Electrochem. Soc. (2020), 167 (16), 160524.http://hdl.handle.net/10222/81827Electrolyte additives are commonly used to improve electrochemical performance in Li-ion cells. The use of solids as electrolyte additives is far less common. Here, Si40'(FeSi2)(60−x)'(LiF)(x)' (' = volume percent) alloys with LiF incorporated in the alloy as a solid electrolyte additive are studied. Improved capacity retention was observed for LiF-containing alloys with x < 12, with optimum performance at x = 6. Improvements in electrochemical performance of Si-Fe alloys were also observed when LiF was introduced as a slurry additive. The use of solids as electrolyte additives may be a valuable method for improving electrochemical performance of Si-alloy negative electrodes.Article