Oxidization‐Temperature‐Triggered Rapid Preparation of Large‐Area Single‐Crystal Cu(111) Foil

Author:

Chen Heng12,Liu Xiaoting123,Huang Yongfeng45,Li Guangliang2,Yu Feng12,Xiong Feng6,Zhang Mengqi2,Sun Luzhao123,Yang Qian12,Jia Kaicheng12,Zou Ruqiang6,Li Huanxin7,Meng Sheng458,Lin Li26,Zhang Jincan1237,Peng Hailin12,Liu Zhongfan123ORCID

Affiliation:

1. Center for Nanochemistry Beijing Science and Engineering Centre for Nanocarbons Beijing National Laboratory for Molecular Science College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China

2. Beijing Graphene Institute Beijing 100095 P. R. China

3. Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 P. R. China

4. Songshan Lake Materials Laboratory Dongguan Guangdong 523808 P. R. China

5. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China

6. School of Materials Science and Engineering Peking University Beijing 100871 P. R. China

7. Department of Engineering University of Cambridge Cambridge CB3 0FA UK

8. School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 P. R. China

Abstract

AbstractThe controlled preparation of single‐crystal Cu(111) is intensively investigated owing to the superior properties of Cu(111) and its advantages in synthesizing high‐quality 2D materials, especially graphene. However, the accessibility of large‐area single‐crystal Cu(111) is still hindered by time‐consuming, complicated, and high‐cost preparation methods. Here, the oxidization‐temperature‐triggered rapid preparation of large‐area single‐crystal Cu(111) in which an area up to 320 cm2 is prepared within 60 min, and where low‐temperature oxidization of polycrystalline Cu foil surface plays a vital role, is reported. A mechanism is proposed, by which the thin CuxO layer transforms to a Cu(111) seed layer on the surface of Cu to induce the formation of a large‐area Cu(111) foil, which is supported by both experimental data and molecular dynamics simulation results. In addition, a large‐size high‐quality graphene film is synthesized on the single‐crystal Cu(111) foil surface and the graphene/Cu(111) composites exhibit enhanced thermal conductivity and ductility compared to their polycrystalline counterpart. This work, therefore, not only provides a new avenue toward the monocrystallinity of Cu with specific planes but also contributes to improving the mass production of high‐quality 2D materials.

Funder

National Natural Science Foundation of China

National Basic Research Program of China

Beijing Municipal Science and Technology Commission

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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