Facile Synthesis of Fe2O3 Nano-Dots@Nitrogen-Doped Graphene for Supercapacitor Electrode with Ultralong Cycle Life in KOH Electrolyte | |
Department | 清洁能源化学与材料实验室 |
Liu L(刘莉)1,3; Lang JW(郎俊伟)1; Zhang P(张鹏)1,3; Hu B(胡斌)2; Yan XB(阎兴斌)1; Yan XB(阎兴斌) | |
The second department | 固体润滑国家重点实验室;osso国家重点实验室 |
2016 | |
Source Publication | ACS Applied Materials and Interfaces |
ISSN | 1944-8244 |
Volume | 8Issue:14Pages:9335-9344 |
Abstract | Fe2O3 nanodots supported on nitrogen-doped graphene sheets (denoted as Fe2O3 NDs@NG) with different loading masses are prepared through a facile one-pot solvothermal method. The resulting Fe2O3 NDs@NG composites exhibit outstanding electrochemical properties in aqueous KOH electrolyte. Among them, with the optimal loading mass of Fe2O3 NDs, the corresponding Fe2O3 NDs@NG-0.75 sample is able to deliver a high specific capacitance of 274 F g–1 at 1 A g–1 and the capacitance is still as high as 140 F g–1 even at a ultrahigh current density of 50 A g–1, indicating excellent rate capability. More remarkably, it displays superior capacitance retention after 100 000 cycles (about 75.3% at 5 A g–1), providing the best reported long-term cycling stability for iron oxides in alkaline electrolytes to date. Such excellent electrochemical performance is attributed to the right combination of highly dispersed Fe2O3 NDs and appropriately nitrogen-doped graphene sheets, which enable the Fe2O3 NDs@NG-0.75 to offer plenty of accessible redox active sites, facilitate the electron transfer and electrolyte diffusion, as well as effectively alleviate the volume change of Fe2O3 NDs during the charge–discharge process. |
Keyword | Iron Oxide Nanodots Nitrogen-doped Graphene Supercapacitor Cycling Stability Rate Capability |
Subject Area | 材料科学与物理化学 |
DOI | 10.1021/acsami.6b00225 |
Funding Organization | the National Nature Science Foundation of China (Grants 21573265;51501208) |
Indexed By | SCI |
If | 7.504 |
Language | 英语 |
Funding Project | 低维材料与化学储能课题组;羰基金属功能材料课题组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20092 |
Collection | 清洁能源化学与材料实验室 固体润滑国家重点实验室(LSL) 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Yan XB(阎兴斌) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100080, Peoples R China |
Recommended Citation GB/T 7714 | Liu L,Lang JW,Zhang P,et al. Facile Synthesis of Fe2O3 Nano-Dots@Nitrogen-Doped Graphene for Supercapacitor Electrode with Ultralong Cycle Life in KOH Electrolyte[J]. ACS Applied Materials and Interfaces,2016,8(14):9335-9344. |
APA | Liu L,Lang JW,Zhang P,Hu B,Yan XB,&阎兴斌.(2016).Facile Synthesis of Fe2O3 Nano-Dots@Nitrogen-Doped Graphene for Supercapacitor Electrode with Ultralong Cycle Life in KOH Electrolyte.ACS Applied Materials and Interfaces,8(14),9335-9344. |
MLA | Liu L,et al."Facile Synthesis of Fe2O3 Nano-Dots@Nitrogen-Doped Graphene for Supercapacitor Electrode with Ultralong Cycle Life in KOH Electrolyte".ACS Applied Materials and Interfaces 8.14(2016):9335-9344. |
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