  The charge, spin, and composition degrees of freedom in high-entropy alloy
endow it with tunable valence and spin states, infinite combinations and
excellent mechanical performance. Meanwhile, the stacking, interlayer, and
angle degrees of freedom in van der Waals material bring it with exceptional
features and technological applications. Integration of these two distinct
material categories while keeping their merits would be tempting. Based on this
heuristic thinking, we design and explore a new range of materials (i.e.,
dichalcogenides, halides and phosphorus trisulfides) with multiple metallic
constitutions and intrinsic layered structure, which are coined as high-entropy
van der Waals materials. Millimeter-scale single crystals with homogeneous
element distribution can be efficiently acquired and easily exfoliated or
intercalated in this materials category. Multifarious physical properties like
superconductivity, magnetic ordering, metal-insulator transition and corrosion
resistance have been exploited. Further research based on the concept of
high-entropy van der Waals materials will enrich the high-throughput design of
new systems with intriguing properties and practical applications.
