▎ 摘　　要

The lightweight, thin and effective electromagnetic shielding materials are needed with the growing numbers of electronic devices with small size. Here, the lightweight and ultrathin TiO2-Ti3C2TX/graphene film with the range of 5.25-9.17 mu m of thickness was prepared by vacuum filtration and pyrolysis. The electrical conductivity and electromagnetic interference shielding effectiveness (EMI SE) of TiO2-Ti3C2TX/graphene film with different amount of Ti3C2Tx were evaluated. The surface resistance and EMI SE reach 7.5 O/sq and 28 dB, respectively. A realistic parameter of special shielding effectiveness/thickness (SSE/t) is up to 30291.43 dB cm(2) g(-1) when density and thickness of the TiO2-Ti3C2TX/graphene film are considered. This work provides the strategy to produce lightweight and ultrathin film for effective EMI shielding.