Ultratough graphene–black phosphorus films
Tianzhu Zhou, Hong Ni, Yanlei Wang, Chao Wu, Hao Zhang, Jianqi Zhang, Antoni P. Tomsia, Lei Jiang, Qunfeng Cheng
Abstract
Significance This manuscript describes the functionalization of the graphene oxide (GO) nanosheets by black phosphorus (BP) nanosheets through P-O-C covalent bonding. Such a strategy reduces the voids in the lamellar graphene film and makes the graphene film much more compact, while at the same time improving the alignment degree of GO nanosheets. Equally important, the conjugated AD molecules improve the compactness of the graphene films and the alignment degree of rGO nanosheets via π-π stacking interaction between adjacent rGO nanosheets. As a result, the record high toughness of our graphene film was achieved along with excellent electrical conductivity. In addition, our tough graphene–black phosphorus films also exhibit high ambient stability and electromagnetic shielding performance.