Achieving high rate and high energy density in an all-solid-state flexible asymmetric pseudocapacitor through the synergistic design of binder-free 3D ZnCo2O4 nano polyhedra and 2D layered Ti3C2Tx-MXenes

Flexible ZCO‖MXene-ASC exhibits excellent electrochemical performance in a KOH/PVA hydrogel electrolyte with outstanding cycling stability in an enlarged potential window of 0.0–1.6 V with high flexibility.