Preparation mechanism of hierarchical layered structure of graphene/copper composite with ultrahigh tensile strength

Yang, Ziyue1; Wang, Lidong1; Shi, Zhendong1; Wang, Miao1; Cui, Ye2; Wei, Bing3; Xu, Shichong4; Zhu, Yunpeng5; Fei, Weidong1,5

2018-02

10.1016/j.carbon.2017.10.095

CARBON   影响因子和分区

0008-6223

1873-3891

Nacre-like composite is promising to realize the intriguing properties of graphene in metal matrix. However, how to fabricate the composite with nacre-like structure and improve effectively its property is still challenging. Here we report a facile synthesis of reduced graphene oxide(RGO)/copper(Cu) composite with hierarchical layered structure based on molecular level mixing and self-assembly. The effects of pH value, temperature, mixing method and graphene content on the microstructure and mechanical property of composite were investigated. The pH value and temperature are the main factors in the formation of hierarchical layered structure. For macroscale microstructure, the composites consist of parallel carbon-rich strip aggregates and carbon-poor matrix. For microscale microstructure, the carbonrich aggregate contains many micro-layered grains composing of alternating layers of graphene and copper, forming a nacre-like composite structure. Furthermore, it is believed that the length-width ratio of macroscopic aggregates related with the mixing method has a significant impact on the mechanical properties of composites. The tensile strength of the 2.5 vol% RGO/Cu composite is as high as 748 MPa. Moreover, good electrical conductivity is also obtained in the composites. This work provides a better understanding of design graphene based composites with hierarchical layered structure and high performance. (C) 2017 Elsevier Ltd. All rights reserved.

SCI ; EI

英语

其他

National Natural Science Foundation of China[51671069] ; National Natural Science Foundation of China[51301075]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000417484000039

PERGAMON-ELSEVIER SCIENCE LTD

20174704415914

Aggregates ; Gems ; Graphene ; Mechanical properties ; Microstructure ; Mixing ; pH ; Self assembly ; Structural properties ; Tensile strength

Highway Engineering:406 ; Gems:482.2.1 ; Metallurgy and Metallography:531 ; Nanotechnology:761 ; Chemistry, General:801.1 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Materials Science:951

CHEMISTRY

Web of Science

1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
2.Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China
3.South Univ Sci & Technol China, Dept Mat Sci & Engn, Shenzhen 518000, Peoples R China
4.Jilin Normal Univ, Minist Educ, Key Lab Funct Mat Phys & Chem, Siping 136000, Peoples R China
5.Qinghai Univ, Sch Mech Engn, Xining 810016, Peoples R China

Yang, Ziyue,Wang, Lidong,Shi, Zhendong,et al. Preparation mechanism of hierarchical layered structure of graphene/copper composite with ultrahigh tensile strength[J]. CARBON,2018,127:329-339.

Yang, Ziyue.,Wang, Lidong.,Shi, Zhendong.,Wang, Miao.,Cui, Ye.,...&Fei, Weidong.(2018).Preparation mechanism of hierarchical layered structure of graphene/copper composite with ultrahigh tensile strength.CARBON,127,329-339.

Yang, Ziyue,et al."Preparation mechanism of hierarchical layered structure of graphene/copper composite with ultrahigh tensile strength".CARBON 127(2018):329-339.