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Research progress on the characterization and repair of graphene defects
International Journal of Minerals, Metallurgy and Materials ( IF 4.8 ) Pub Date : 2020-09-05 , DOI: 10.1007/s12613-020-2031-2
Bo-yu Ju , Wen-shu Yang , Qiang Zhang , Murid Hussain , Zi-yang Xiu , Jing Qiao , Gao-hui Wu

Graphene has excellent theoretical properties and a wide range of applications in metal-based composites. However, because of defects on the graphene surface, the actual performance of the material is far below theoretical expectations. In addition, graphene containing defects could easily react with a matrix alloy, such as Al, to generate brittle and hydrolyzed phases that could further reduce the performance of the resulting composite. Therefore, defect repair is an important area of graphene research. The repair methods reported in the present paper include chemical vapor deposition, doping, liquid-phase repair, external energy graphitization, and alloying. Detailed analyses and comparisons of these methods are carried out, and the characterization methods of graphene are introduced. The mechanism, research value, and future out-look of graphene repair are also discussed at length. Graphene defect repair mainly relies on the spontaneous movement of C atoms or heteroatoms to the pore defects under the condition of applied energy. The repair degree and mechanism of graphene repair are also different according to different preparations. The current research on graphene defect repair is still in its infancy, and it is believed that the problem of defect evolution will be explained in more depth in the future.



中文翻译:

石墨烯缺陷的表征与修复研究进展

石墨烯具有出色的理论性能,在金属基复合材料中具有广泛的应用。但是,由于石墨烯表面存在缺陷,该材料的实际性能远远低于理论预期。此外,含石墨烯的缺陷可能容易与基体合金(例如Al)反应,产生脆性和水解相,从而进一步降低所得复合材料的性能。因此,缺陷修复是石墨烯研究的重要领域。本文报道的修复方法包括化学气相沉积,掺杂,液相修复,外部能量石墨化和合金化。对这些方法进行了详细的分析和比较,并介绍了石墨烯的表征方法。机制,研究价值,还详细讨论了石墨烯修复的未来前景。石墨烯缺陷的修复主要依靠在施加能量的条件下碳原子或杂原子向孔隙缺陷的自发运动。根据不同的制备方法,石墨烯的修复程度和修复机理也不同。目前关于石墨烯缺陷修复的研究仍处于起步阶段,相信将来会更深入地解释缺陷演变的问题。

更新日期:2020-09-06
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