Glue-assisted grinding exfoliation of large-size 2D materials for insulating thermal conduction and large-current-density hydrogen evolution |
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| Affiliation: | 1. Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute & Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, PR China;2. Department of Physics, Southern University of Science and Technology, Shenzhen 518055, PR China;3. Laboratory for Materials Sciences, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China;1. School of Energy Science and Engineering, University of Electronic Science and Technology, Chengdu 611731, PR China;2. School of Life Science and Technology, University of Electronic Science and Technology, Chengdu 611731, PR China;3. Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom;4. Department of Material Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, PR China;5. School of Chemical, Biological, and Materials Engineering, The University of Oklahoma, Norman, OK 73019, USA;6. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, PR China;7. Department of Physics, Brown University, Providence, RI 02912, USA;8. Laboratory of Solid State Ionics, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China;1. Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education, School of Materials Science and Engineering, Beihang University, 100191 Beijing, China;2. State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power, 200245 Shanghai, China;3. Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, 100084 Beijing, China;4. Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, 100191 Beijing, China;1. Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China;2. Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China;3. State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China;1. Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Shenzhen Geim Graphene Center (SGC), Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China;2. Department of Materials Science and Engineering, University of California, Berkeley, CA 94720, USA;3. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;4. Shenzhen Key Laboratory for Graphene-based Materials and Engineering Laboratory for Functionalized Carbon Materials, Shenzhen Geim Graphene Center (SGC), Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China;5. Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Two-dimensional (2D) materials have many promising applications, but their scalable production remains challenging. Herein, we develop a glue-assisted grinding exfoliation (GAGE) method in which the adhesive polymer acts as a glue to massively produce 2D materials with large lateral sizes, high quality, and high yield. Density functional theory simulation shows that the exfoliation mechanism involves the competition between the binding energy of selected polymers and the 2D materials which is larger than the exfoliation energy of the layered materials. Taking h-BN as an example, the GAGE produces 2D h-BN with an average lateral size of 2.18 μm and thickness of 3.91 nm. The method is also extended to produce various other 2D materials, including graphene, MoS2, WS2, Bi2O2Se, mica, vermiculite, and montmorillonite. Two representative applications of thus-produced 2D materials have been demonstrated, including 2D h-BN/polymer composites for insulating thermal conduction and 2D MoS2-based electrocatalysts for large-current-density hydrogen evolution, indicating the great potential of massively produced 2D materials. |
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| Keywords: | 2D materials Mass production h-BN Thermal conduction Hydrogen evolution |
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