Two-dimensional nanomaterials for high-efficiency electromagnetic wave absorption: An overview of recent advances and prospects

•Several representative 2D materials and their hybrids were selected as the main research objects.•The synthesis and absorption properties of 2D-based absorbers in the last four years were summarized.•The EMW absorption mechanisms of various 2D-based absorbers were summarized in detail.•Prospects and shortcomings of 2D-based absorbers were presented.