The preparation and electrochemical performance of Mo6S8 as cathode materials for magnesium ion batteries

Abstract

In this work, we reported a Chevrel phase [Formula: see text], which was synthesized by a molten salt approach, and its electrochemical performance as a cathode material for rechargeable magnesium batteries. The phase composition and micromorphology of the product were measured and analyzed by X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The Chevrel phase sulfide delivered an excellent specific capacity of 91 mAh g[Formula: see text] at a current density of 0.2 C after 70 cycles. Its excellent reversible capacity, rate performance and cycle stability demonstrate the feasibility of the Chevrel phase [Formula: see text] materials for future rechargeable magnesium batteries.