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Two-dimensional (2D) materials have many promising applications, but theirscalable production remains challenging. Herein, we develop a glue-assistedgrinding exfoliation (GAGE) method in which the adhesive polymer acts as a glueto massively produce 2D materials with large lateral sizes, high quality, andhigh yield. Density functional theory simulation shows that the exfoliationmechanism involves the competition between the binding energy of selectedpolymers and the 2D materials which is larger than the exfoliation energy ofthe layered materials. Taking h-BN as an example, the GAGE produces 2D h-BNwith an average lateral size of 2.18 {\mu}m and thickness of 3.91 nm. Themethod is also extended to produce various other 2D materials, includinggraphene, MoS2, Bi2O2Se, vermiculite, and montmorillonite. Two representativeapplications of thus-produced 2D materials have been demonstrated, includingh-BN/polymer composites for insulating thermal conduction and MoS2electrocatalysts for large-current-density hydrogen evolution, indicating thegreat potential of massively produced 2D materials.

Glue-Assisted Grinding Exfoliation of Large-Size 2D Materials for Insulating Thermal Conduction and Large-Current-Density Hydrogen Evolution