An Ångström-level d-spacing controlling synthetic route for MoS2 towards stable intercalation of sodium ions

Abstract

In this paper, we precisely controlled the d-spacing of vertically aligned MoS₂ arrays ranging from 6.2 to 10 Å via heating-controlled deintercalation of NH₄⁺ ions. The finely controllable interlayer nanoarchitecture resulted in an optimal d-spacing of 7.3 Å, which on nitrogenous reduced graphene oxide (N-RGO) delivered a reversible capacity of 295 mA h g⁻¹ after 2000 cycles at 1 A g⁻¹ for Na⁺ intercalation.