Ti3C2Tx–Nb2Mo3O14 Composite as Novel Anode to Realize High Power Density Combined with High Stability in a Hybrid Lithium‐Ion Capacitor

Lithium‐ion capacitors (LICs), with their higher energy density at high power capability, stand out as the future generation of energy‐storage devices. Herein, the nanocomposite of Ti 3 C 2 T x MXene with Nb 2 Mo 3 O 14 is prepared by a one‐step hydrothermal method and studied as an electrode material for LIC. The as‐fabricated composite MXene niobium molybdenum oxide (MXNMO) achieves a high reversible capacity of 205 mAh g −1 at 100 mA g −1 current density with outstanding cyclability. Further, asymmetric LIC full‐cell device composed of MXNMO anode with supercapacitor grade activated carbon as a cathode delivers an energy density of 37.8 Wh kg −1 (0.25 A g −1 ) and a higher power density of 4244 W kg −1 (5 A g −1 ) along with the excellent durability showing 85% capacitance retention over 4000 cycles at 0.5 A g −1 .