A novel rose-with-thorn ternary MoS@carbon@polyaniline nanocomposite as a rechargeable magnesium battery cathode displaying stable capacity and low-temperature performance.

Developing high-performance cathode materials for magnesium (Mg) batteries is of great significance. Here, a novel rose-with-thorn ternary MoS@C@polyaniline (PANI) nanocomposite composed of carbon and PANI nanoneedles co-coated on rose-like MoS is developed. The conductive PANI needles on the surface of MoS improve the conductivity, and the inner MoS is wrapped by a carbon layer which is beneficial for the aniline coating.