A non-nucleophilic electrolyte based on all-inorganic salts with conditioning-free characteristic for rechargeable magnesium batteries

•A conditioning-free electrolyte denoted as MLCH was prepared mainly based on all-inorganic salts.•The main equilibrium species in the MLCH electrolyte are [LiCl2(THF)2]− and [Mg2(µ-Cl)3(THF)6]+.•The conditioning-free characteristic of the MLCH electrolyte mainly originates from the synergistic effect of LiCl, CrCl3 and HpMS.•The discharge specific capacity of a cus|MLCH|Mg cell is up to 215 mAh g−1 at 0.1 c.