Plasma assisted fabrication of multi-layer graphene/nickel hybrid film as enhanced micro-supercapacitor electrodes

17th IUMRS International Conference in Asia

Ding, Q.^1 ; Li, W.L.^3,4 ; Zhao, W.L.^1 ; Wang, J.Y.^1 ; Xing, Y.P.^1 ; Li, X.^2 ; Xue, T.^2 ; Qi, W.^5 ; Zhang, K.L.^1 ; Yang, Z.C.^1 ; Zhao, J.S.^1

School of Electronics Information Engineering, Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin University of Technology, 391 West Binshui Road, Tianjin

300384, China^1

Center for Analysis, Tianjin University, Tianjin

300072, China^2

State Key Laboratory of Transient Optics and Photonics, Xi'An Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an, Shaanxi

710119, China^3

University of Chinese, Academy of Sciences, Beijing

100049, China^4

Beijing Key Laboratory of Energy Nanomaterials, Advance Technology and Materials Co. Ltd., China Iron and Steel Research Institute Group, Beijing

100081, China^5

关键词: Argon plasma bombardment;    Electrochemical performance;    Energy storage properties;    Galvanostatic charge/discharge;    Micro supercapacitors;    Specific capacitance;    Surface-to-volume ratio;    Transmission electron;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012014/pdf
DOI  :  10.1088/1757-899X/182/1/012014

来源: IOP

【 摘 要 】

A facile synthesis strategy has been developed for fabricating multi-layer graphene/nickel hybrid film as micro-supercapacitor electrodes by using plasma enhanced chemical vapor deposition. The as-presented method is advantageous for rapid graphene growth at relatively low temperature of 650 °C. In addition, after pre-treating for the as-deposited nickel film by using argon plasma bombardment, the surface-to-volume ratio of graphene film on the treated nickel substrate is effectively increased by the increasing of surface roughness. This is demonstrated by the characterization results from transmission electron microscopy, scanning electron microscope and atomic force microscopy. Moreover, the electrochemical performance of the resultant graphene/nickel hybrid film as micro-supercapacitor working electrode was investigated by cyclic voltammetry and galvanostatic charge/discharge measurements. It was found that the increase of the surface-to-volume ratio of graphene/nickel hybrid film improved the specific capacitance of 10 times as the working electrode of micro-supercapacitor. Finally, by using comb columnar shadow mask pattern, the micro-supercapacitor full cell device was fabricated. The electrochemical performance measurements of the micro-supercapacitor devices indicate that the method presented in this study provides an effective way to fabricate micro-supercapacitor device with enhanced energy storage property.