Revisiting LiClO[sub 4] as an Electrolyte for Rechargeable Lithium-Ion Batteries

Abstract

In this work, was revisited and explored as a possible electrolyte in Li-ion batteries. and solutions in alkyl carbonate solvent mixtures were compared in several aspects: electrochemical windows with noble metal and aluminum electrodes, anodic stability, surface chemistry developed on negative electrodes (Li, Li–graphite, Li–Si), the electrochemical behavior of graphite anodes and cathodes, and thermal behavior (solutions alone and mixtures of solutions and electrode materials). The anodic stability and the aluminum passivation are much better in solutions than in solutions. However, HF contamination in the former solutions worsens the passivation of negative electrodes due to reactions with surface and ROLi species. Thermal reactions of produce more specific heat than solutions. However, in terms of onset temperatures for thermal runaway, the two electrolytes are equivalent. In conclusion, is still an electrolyte that may be considered for use in lithium-ion batteries.