▎ 摘　　要

NOVELTY - MXene film with corrugated shape, comprises MXene material, and has a periodic corrugated shape. USE - The MXene film is useful as battery electrode (claimed). ADVANTAGE - The MXene film is capable of forming uniform lithium ion and electric field in the similar array structure, inducing uniform deposition effect of metal lithium. The appearance of the ripple has a smooth interface, and it avoids the tip effect caused by the sharp interface of the composite component in the array structure. MXene components contained in the film can also act as nucleating agent, further reducing the nucleation of the metal lithium, promoting metal controllable deposition, so as to obtain the metal battery with excellent long cycle performance and high safety performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparation method of MXene film; metal composite material; preparation method of the metal composite material; and battery.