N-Doped carbon decorated with molybdenum disulfide with excellent electrochemical performance for lithium-ion batteries

Abstract

Two-dimensional MoS₂ nanoplates within N-doped carbon from polyaniline (PANI) were fabricated by a simple hydrothermal method. During this process, PANI facilitated the absorption of inorganic precursors and provided confined spaces for the growth of MoS₃ nanoparticles in the case of the unwanted aggregations. The unique nanostructure and composition of the nanoplates achieved high capacity. When CNFs@NC/MoS₂ was used as an anode in lithium-ion batteries, it maintained an ultrahigh capacity of 900.9 mA h g⁻¹ at a current density of 200 mA g⁻¹ for 80 cycles. Even when the current density returned to 100 mA g⁻¹ after cycling at different rates, a capacity of 998 mA h g⁻¹ was still achieved.