Three-dimensional Ni(OH)(2) nanoflakes/graphene/nickel foam electrode with high rate capability for supercapacitor applications | |
Department | 清洁能源化学与材料实验室 |
Wang LQ(王力群)1,2; Li XC(李小成)1; Guo TM(郭铁明)2; Yan XB(阎兴斌)1; Tay, Beng Kang3; Li XC(李小成) | |
2014 | |
Source Publication | International Journal of Hydrogen Energy |
ISSN | 0360-3199 |
Volume | 39Issue:15Pages:7876-7884 |
Abstract | Supercapacitor, known as an important energy storage device, is also a critical component for next generation of hydrogen fuel cell vehicles. In this study, we report a novel route for synthesis of three-dimensional Ni(OH)2/graphene/nickel foam electrode by electrochemical depositing Ni(OH)2 nanoflakes on graphene network grown on nickel foam current collector and explore its applications in supercapacitors. The resulting binder-free Ni(OH)2/graphene/nickel foam electrode exhibits excellent supercapacitor performance with a specific capacitance of 2161 F/g at a current density of 3 A/g. Even as the current density reaches up to 60 A/g, it still remains a high capacitance of 1520 F/g, which is much higher than that of Ni(OH)2/nickel foam electrode. The enhanced rate capability performance of Ni(OH)2/graphene/nickel foam electrode is closely related to the presence of highly conductive graphene layer on nickel foam, which can remarkably boost the chargetransfer process at electrolyteeelectrode interface. The three-dimensional graphene/nickel foam substrate also significantly improves the electrochemical cycling stability of the electrodeposited Ni(OH)2 film because of the strong adhesion between graphene film and electrodeposited Ni(OH)2 nanoflakes. Results of this study provide an alternative pathway to improve the rate capability and cycling stability of Ni(OH)2 nanostructure electrode and offer a great promise for its applications in supercapacitors. |
Keyword | Ni(Oh)(2) Graphene Supercapacitor Rate Capability Charge-transfer |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.ijhydene.2014.03.067 |
Indexed By | SCI |
If | 3.313 |
Language | 英语 |
Funding Project | 新型电池材料研究组;低维材料与化学储能课题组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/6623 |
Collection | 清洁能源化学与材料实验室 |
Corresponding Author | Li XC(李小成) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China 3.Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 679798, Singapore |
Recommended Citation GB/T 7714 | Wang LQ,Li XC,Guo TM,et al. Three-dimensional Ni(OH)(2) nanoflakes/graphene/nickel foam electrode with high rate capability for supercapacitor applications[J]. International Journal of Hydrogen Energy,2014,39(15):7876-7884. |
APA | Wang LQ,Li XC,Guo TM,Yan XB,Tay, Beng Kang,&李小成.(2014).Three-dimensional Ni(OH)(2) nanoflakes/graphene/nickel foam electrode with high rate capability for supercapacitor applications.International Journal of Hydrogen Energy,39(15),7876-7884. |
MLA | Wang LQ,et al."Three-dimensional Ni(OH)(2) nanoflakes/graphene/nickel foam electrode with high rate capability for supercapacitor applications".International Journal of Hydrogen Energy 39.15(2014):7876-7884. |
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