To understand the influence of the crystallite size of hydrothermally synthesized MoS2 materials on electrochemical lithium intercalation behavior, the samples were investigated in a standard, lithium-containing organic electrolyte (1 M LiPF6 in EC/DMC, LP30) using cyclic voltammetry (CV). The potential range was selected from 1.0 -3.0 V vs. Li + /Li allows to study the Li + intercalation reaction according to