Three-dimensional Ni(OH)(2) nanoflakes/graphene/nickel foam electrode with high rate capability for supercapacitor applications | |
Wang LQ(王力群)1,2; Li XC(李小成)1![]() ![]() | |
刊名 | International Journal of Hydrogen Energy
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2014 | |
卷号 | 39期号:15页码:7876-7884 |
关键词 | Ni(OH)(2) Graphene Supercapacitor Rate capability Charge-transfer |
ISSN号 | 0360-3199 |
通讯作者 | 李小成 |
英文摘要 | 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. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000336338500030 |
公开日期 | 2014-11-06 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/6623] ![]() |
专题 | 兰州化学物理研究所_清洁能源化学与材料实验室 |
作者单位 | 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 |
推荐引用方式 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.(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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