A Mg²⁺/Li⁺ hybrid-ion battery based on MoS₂ prepared by solvothermal synthesis with ionic liquid assistance

A simple solvothermal process was developed to synthesize expanded layered MoS₂ with ionic liquid (IL) addition. The samples were systematically investigated by field emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. Electrochemical performances were evaluated in CR2032 coin-type cells in magnesium-ion batteries and lithium–magnesium hybrid-ion batteries. This demonstrated the presence of ionic liquid in the reaction media that favors the formation of MoS₂ flower-like architectures, increasing the specific surface area and the electrochemical performances as a cathode in Li⁺/Mg²⁺ batteries.