Black phosphorus as a new lubricant
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In recent years, a new 2D-layered material—black phosphorus (BP)—has been a rising star after the era of graphene owing to its high charge carrier mobility, tunable direct bandgap and unique in-plane anisotropic structure. With the development of the synthesis and modification methods of BP, its extensive applications, e.g., transistors, batteries and optoelectronics have emerged. In order to explore its full potential, research into the tribological properties of BP 2D-layered materials such as lubrication additives and fillers in self-lubricating composite materials would be not only of high scientific value but also of practical significance. In this work, recent advances on the friction and lubrication properties of BP nanosheets made by our group, including the micro-friction properties, the lubrication properties of BP nanosheets as water-based and oil-based lubrication additives, and the friction and wear of BP/PVDF composites will be presented. Finally, the future challenges and opportunities in the use of BP materials as lubricants will be discussed.
Keywordsblack phosphorus two-dimensional (2D) material lubricant additive self-lubricating composite materials friction
The authors would like to acknowledge Xudong Chen, Ziyi Cui, Jinjin Li and Dan Guo for some of experiments present in the manuscript and their helpful discussions. The authors also would like to acknowledge the support of the National Natural Science Foundation of China (Grant Nos. 51527901, 51335005, 51475256, and 51605249).
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