| Influences of the thickness of self-assembled graphene multilayer films on the supercapacitive performance | |
| Department | 固体润滑国家重点实验室 |
Liu WW(刘文文)1,2; Yan XB(阎兴斌)1 ; Lang JW(郎俊伟)1; Chen JT(陈江涛)1; Xue QJ(薛群基)1; Yan XB(阎兴斌)
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| 2012 | |
| Source Publication | Electrochimica Acta
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| ISSN | 0013-4686 |
| Volume | 60Pages:41-49 |
| Abstract | In this study, graphene multilayer films with controlled thicknesses deposited on indium tin oxide glass substrates were fabricated using electrostatic layer-by-layer self-assembly of negatively charged graphene oxide followed by hydrazine hydrate reduction. X-ray diffraction spectroscopy, Raman spectroscopy, UV–vis spectroscopy, field emission scanning electron microscopy and atomic force microscopy were used to characterize the microstructures and morphologies of the as-fabricated multilayer films. The supercapacitive properties of the multilayer film electrodes were investigated via cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectrometry in a 0.5 M Na2SO4 electrolyte. The graphene multilayer films employed as the electrode materials not only exhibited nearly rectangular cyclic voltammetry curves at an exceedingly high scan rate of 2000 mV/s, but also exhibited highly linear and symmetrical charge/discharge curves, which indicated that they have ideal electric double-layer capacitive behavior. Furthermore, the supercapacitive performance of the as-prepared graphene multilayer films exhibited a strong dependence on the number of self-assembled layers. Moreover, the specific capacitance per surface area for each self-assembled graphene film exhibited almost no decay after 1500 cycles, implying excellent stability and reversibility. These electrochemical tests indicated that the as-prepared graphene films have great potential for supercapacitor applications. |
| Keyword | Graphene Multilayer Self-assembly Electrostatic Adsorption Supercapacitors |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1016/j.electacta.2011.10.090 |
| Funding Organization | the Top Hundred Talents Program of the Chinese Academy of Sciences;the National Nature Science Foundations of China (51005225);the Postdoctoral Science Foundation of China (20100480728) |
| Indexed By | SCI |
| If | 3.777 |
| Language | 英语 |
| Funding Project | 低维材料摩擦学组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/3333 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Yan XB(阎兴斌) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100080, Peoples R China |
| Recommended Citation GB/T 7714 | Liu WW,Yan XB,Lang JW,et al. Influences of the thickness of self-assembled graphene multilayer films on the supercapacitive performance[J]. Electrochimica Acta,2012,60:41-49. |
| APA | Liu WW,Yan XB,Lang JW,Chen JT,Xue QJ,&阎兴斌.(2012).Influences of the thickness of self-assembled graphene multilayer films on the supercapacitive performance.Electrochimica Acta,60,41-49. |
| MLA | Liu WW,et al."Influences of the thickness of self-assembled graphene multilayer films on the supercapacitive performance".Electrochimica Acta 60(2012):41-49. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 41-49.PDF（1968KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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