Constructing 1D/2D NiCo‐LDH Nanowire/MXene Composites for Efficient And Stable Lithium Storage

Abstract

Bimetallic layered double hydroxide (LDH) delivers competitive performance in lithium‐ion battery (LIB) because of the unique layered structure. However, the electrochemical performance of LDH is hindered by the low conductivity and the huge structure change upon cycling. To face this challenge, the 1D/2D NiCo‐LDH nanowire/MXene composites (NiCo‐LDH/MXene) are dedicatedly constructed via a simple one‐step hydrothermal method. Owing to the robust conductive skeleton is enabled by MXene nanosheets and abundant electroactive sites provided by NiCo‐LDH nanowires, the NiCo‐LDH/MXene anode exhibits rapid ion diffusion, exceptional redox reaction, and superior structural stability. Consequently, it offers a high specific capacitance of 1081 mAh g−1 after 100 cycles at the current density of 100 mA g−1 and impressive rate performance, i.e., 439 mAh g−1 at the current density of 1000 mA g−1. These results will motivate the exploration of advanced electrode materials for application in energy storage devices.