| Engineering the Electrochemical Capacitive Properties of Microsupercapacitors Based on Graphene Quantum Dots/MnO2 Using Ionic Liquid Gel Electrolytes | |
| Department | 清洁能源化学与材料实验室 |
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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| The second department | 固体润滑国家重点实验室 |
| 2015 | |
| Source Publication | ACS Applied Materials and Interfaces
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| ISSN | 1944-8244 |
| Volume | 7Issue:45Pages:25378-25389 |
| Abstract | 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. |
| Keyword | Microsupercapacitors Graphene Quantum Dots Ionic Liquid Gel Rate Capability Ac Line-filters Mechanism |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1021/acsami.5b07909 |
| Funding Organization | National Natural Science Foundation of China (21573265;51501208;21203223) |
| Indexed By | SCI |
| If | 6.723 |
| Language | 英语 |
| Funding Project | 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/362003/18821 |
| 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） |
| 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.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Engineering the Elec（787KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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