Synthesis of MoS and MoO for their applications in H generation and lithium ion batteries: a review.

Scientists increasingly witness the applications of MoS and MoO in the field of energy conversion and energy storage. On the one hand, MoS and MoO have been widely utilized as promising catalysts for electrocatalytic or photocatalytic hydrogen evolution in aqueous solution. On the other hand, MoS and MoO have also been verified as efficient electrode material for lithium ion batteries. In this review, the synthesis, structure and properties of MoS and MoO are briefly summarized according to their applications for H generation and lithium ion batteries. Firstly, we overview the recent advancements in the morphology control of MoS and MoO and their applications as electrocatalysts for hydrogen evolution reactions. Secondly, we focus on the photo-induced water splitting for H generation, in which MoS acts as an important co-catalyst when combined with other semiconductor catalysts. The newly reported research results of the significant functions of MoS nanocomposites in photo-induced water splitting are presented. Thirdly, we introduce the advantages of MoS and MoO for their enhanced cyclic performance and high capacity as electrode materials of lithium ion batteries. Recent key achievements in MoS- and MoO-based lithium ion batteries are highlighted. Finally, we discuss the future scope and the important challenges emerging from these fascinating materials.