Niobium carbide/reduced graphene oxide hybrid porous aerogel as high capacity and long‐life anode material for Li‐ion batteries

Abstract

Two-dimensional material MXenes owing to their hydrophilic nature, surface termination, and high conductivity can be used in the energy storage device as an anode material. However, poor ion transfer and less available intercalating sites due to self-stacking of MXene sheets prevent comprehensive utilization of their electrochemical properties. To resolve this problem, a facile method is introduced in this paper to disperse MXene sheets onto reduced graphene oxide sheets to form a porous structure by enhancing electrostatic interactions between two components, which can facilitate ion movement and provide access of ions to more intercalating sites. This hybrid material delivered a capacity of 357 mAh g−1 at 0.05 A g−1 as anode in case of lithium-ion batteries. Furthermore, the hybrid material showed exceptional stability even after 1000 cycles at 1 A g−1. Current work offers an easy approach for the synthesis of high-performance niobium carbide-based hybrid energy storage materials.