Engineering the Electrochemical Capacitive Properties of Microsupercapacitors Based on Graphene Quantum Dots/MnO2 Using Ionic Liquid Gel Electrolytes
文献类型：期刊论文
| 作者 | Shen BS(申保收)1,2 ; Lang JW(郎俊伟)1; Guo RS(郭瑞生)1; Zhang X(张旭)1; Yan XB(阎兴斌)1; Yan XB(阎兴斌)
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| 刊名 | ACS Applied Materials and Interfaces
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| 出版日期 | 2015 |
| 卷号 | 7期号:45页码:25378-25389 |
| 关键词 | microsupercapacitors graphene quantum dots ionic liquid gel rate capability ac line-filters mechanism |
| ISSN号 | 1944-8244 |
| 通讯作者 | 阎兴斌 |
| 英文摘要 | All-solid-state microsupercapacitors (MSCs) have been receiving intense interest due to their potential as micro/nanoscale energy storage devices, but their low energy density has limited practical applications. It has been reported that gel electrolytes based on ionic liquids (ionogels) with large potential windows can be used as solid electrolytes to enhance the energy density of MSCs, but a systematic study on how to select and evaluate such ionogels for MSCs is rare. In this study, we construct a series of all-solid-state asymmetric MSCs on the interdigital finger electrodes, using graphene quantum dots (GQDs) as the negat(i)ve electrode, MnO2 nanosheets as the positive electrode, and different ionogels as the solid electrolytes. Among them, the MSC using 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][NTF2]) with 4 wt % fumed SiO2 ionogel exhibited the best electrochemical performance, having excellent rate capability with the scan rate up to 2000 V s-1, ultrafast frequency response (tau(0) = 206.9 mu s) and high energy density. The outstanding performance of this device mainly results from fast ion diffusion, high ion conductivity of the ionogel, and ionic liquid-matrix interactions. The results presented here provide guidance for picking out appropriate ionogels for use in high-performance all-solid-state MSCs to meet the growing requirement of micronanoscale energy storage devices. Additionally, the ultrafast frequency response of our MSCs suggests potential applications in ac line-filters. |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China (21573265;51501208;21203223) |
| 语种 | 英语 |
| WOS记录号 | WOS:000365148600048 |
| 源URL | [http://210.77.64.217/handle/362003/18821]  |
| 专题 | 兰州化学物理研究所_清洁能源化学与材料实验室 兰州化学物理研究所_固体润滑国家重点实验室 |
| 通讯作者 | Yan XB(阎兴斌) |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen BS,Lang JW,Guo RS,et al. Engineering the Electrochemical Capacitive Properties of Microsupercapacitors Based on Graphene Quantum Dots/MnO2 Using Ionic Liquid Gel Electrolytes[J]. ACS Applied Materials and Interfaces,2015,7(45):25378-25389. |
| APA | Shen BS,Lang JW,Guo RS,Zhang X,Yan XB,&阎兴斌.(2015).Engineering the Electrochemical Capacitive Properties of Microsupercapacitors Based on Graphene Quantum Dots/MnO2 Using Ionic Liquid Gel Electrolytes.ACS Applied Materials and Interfaces,7(45),25378-25389. |
| MLA | Shen BS,et al."Engineering the Electrochemical Capacitive Properties of Microsupercapacitors Based on Graphene Quantum Dots/MnO2 Using Ionic Liquid Gel Electrolytes".ACS Applied Materials and Interfaces 7.45(2015):25378-25389. |
入库方式： OAI收割
来源：兰州化学物理研究所
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