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Nano Research 2022, 15(11): 9727-9733 https://doi.org/10.1007/s12274-021-3953-3
Research Article | Issue | Published: 22 November 2021

Vertical graphene-coated Cu wire for enhanced tolerance to high current density in power transmission

Show Author's Information Kun Wang1,2,§,  Shuting Cheng2,3,§,  Qingmei Hu2,§,  Feng Yu1,2,  Yi Cheng1,2,  Kewen Huang1,2,  Hao Yuan1,2,  Jun Jiang2,3,  Wenjuan Li1,2,  Junliang Li2,  Shichen Xu1,2,  Jianbo Yin1,2,  Yue Qi1,2( ),  Zhongfan Liu1,2( )
Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Beijing Graphene Institute (BGI), Beijing 100095, China
State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing 102249, China

§ Kun Wang, Shuting Cheng, and Qingmei Hu contributed equally to this work.

Keywords:
plasma-enhanced chemical vapor deposition, vertical graphene, Cu wire, oxidation and corrosion
Topics:
Graphene
Cite this article:
Wang K, Cheng S, Hu Q, et al. Vertical graphene-coated Cu wire for enhanced tolerance to high current density in power transmission. Nano Research, 2022, 15(11): 9727-9733. https://doi.org/10.1007/s12274-021-3953-3
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Abstract Full text Electronic supplementary material About this article

Cu wires (CuWs) are widely used as electric transmission lines. However, their limited thermal and chemical stabilities become challenges under the high-power and harsh environment. Graphene is regarded as an ideal protective barrier for CuW benefiting from its impermeability to all atoms and molecules. Particularly, the excellent hydrophobicity of vertical graphene (VG) will strengthen its protective capability as a corrosion and oxidation barrier. Herein, VG is directly synthesized on CuW by plasma-enhanced chemical vapor deposition method. The hydrophobic VG coating with a high water contact angle can effectively exclude the corrosive liquid and moisture from CuW surface and prevent their further penetration. Consequently, the electrochemical corrosion rate of VG-CuW is reduced by ~ 13, 8, and 2 times, compared with bare CuW, VG-CuW with hydrophilic treatment, and CuW coated with thick horizontal graphene layers, respectively. Negligible oxidation occurs on VG-CuW after the long-time exposure to humid air at ~ 200 °C along with the largely enhanced tolerance under high-current operating condition. This study reveals the impressive potentials of hydrophobic VG as a robust corrosion and oxidation barrier for metal wires used in high-power cables and electronic devices in harsh environment.


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Abstract
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Electronic supplementary material
About this article

Vertical graphene-coated Cu wire for enhanced tolerance to high current density in power transmission

Show Author's information Kun Wang1,2,§, Shuting Cheng2,3,§, Qingmei Hu2,§, Feng Yu1,2, Yi Cheng1,2, Kewen Huang1,2, Hao Yuan1,2, Jun Jiang2,3, Wenjuan Li1,2, Junliang Li2, Shichen Xu1,2, Jianbo Yin1,2, Yue Qi1,2( ), Zhongfan Liu1,2( )
Center for Nanochemistry (CNC), Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
Beijing Graphene Institute (BGI), Beijing 100095, China
State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing 102249, China

§ Kun Wang, Shuting Cheng, and Qingmei Hu contributed equally to this work.

Abstract

Cu wires (CuWs) are widely used as electric transmission lines. However, their limited thermal and chemical stabilities become challenges under the high-power and harsh environment. Graphene is regarded as an ideal protective barrier for CuW benefiting from its impermeability to all atoms and molecules. Particularly, the excellent hydrophobicity of vertical graphene (VG) will strengthen its protective capability as a corrosion and oxidation barrier. Herein, VG is directly synthesized on CuW by plasma-enhanced chemical vapor deposition method. The hydrophobic VG coating with a high water contact angle can effectively exclude the corrosive liquid and moisture from CuW surface and prevent their further penetration. Consequently, the electrochemical corrosion rate of VG-CuW is reduced by ~ 13, 8, and 2 times, compared with bare CuW, VG-CuW with hydrophilic treatment, and CuW coated with thick horizontal graphene layers, respectively. Negligible oxidation occurs on VG-CuW after the long-time exposure to humid air at ~ 200 °C along with the largely enhanced tolerance under high-current operating condition. This study reveals the impressive potentials of hydrophobic VG as a robust corrosion and oxidation barrier for metal wires used in high-power cables and electronic devices in harsh environment.

Keywords: plasma-enhanced chemical vapor deposition, vertical graphene, Cu wire, oxidation and corrosion

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Publication history
Copyright
Acknowledgements

Publication history

Received: 13 August 2021
Revised: 04 October 2021
Accepted: 25 October 2021
Published: 22 November 2021
Issue date: November 2022

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021

Acknowledgements

Acknowledgements

This work was supported by the National Key Basic Research Program of China (No. 2016YFA0200103), the National Natural Science Foundation of China (Nos. 51520105003, 51432002, and U1904193), Beijing National Laboratory for Molecular Sciences (No. BNLMS-CXTD-202001), Beijing Municipal Science & Technology Commission (Nos. Z201100008720006, Z181100004818001, and Z191100000819007), and Beijing Nova Program of Science and Technology (No. Z191100001119067).

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