Knowledge Management System Of Institute of process engineering,CAS
| Microwave-hydrothermal preparation of a graphene/hierarchy structure MnO2 composite for a supercapacitor | |
| Alternative Title | Particuology |
| Chen, Zhong1; Li, Jianling1; Chen, Yu1; Zhang, Yakun1; Xu, Guofeng1; Yang, Jun2; Feng, Ye2 | |
| 2014-08-01 | |
| Source Publication | PARTICUOLOGY
 |
| ISSN | 1674-2001 |
| Volume | 15Issue:4Pages:27-33 |
| Abstract | Graphene/hierarchy structure manganese dioxide (GN/MnO2) composites were synthesized using a simple microwave-hydrothermal method. The properties of the prepared composites were analyzed using field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) measurements. The electrochemical performances of the composites were analyzed using cyclic voltammetry, electrochemical impedance spectrometry (EIS), and chronopotentiometry. The results showed that GN/MnO2 (10 wt% graphene) displayed a specific capacitance of 244 F/g at a current density of 100 mA/g. An excellent cyclic stability was obtained with a capacity retention of approximately 94.3% after 500 cycles in a 1 mol/L Li2SO4 solution. The improved electrochemical performance is attributed to the hierarchy structure of the manganese dioxide, which can enlarge the interface between the active materials and the electrolyte. The preparation route provides a new approach for hierarchy structure graphene composites; this work could be readily extended to the preparation of other graphene-based composites with different structures for use in energy storage devices. (C) 2013 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.; Graphene/hierarchy structure manganese dioxide (GN/MnO2) composites were synthesized using a simple microwave-hydrothermal method. The properties of the prepared composites were analyzed using field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) measurements. The electrochemical performances of the composites were analyzed using cyclic voltammetry, electrochemical impedance spectrometry (EIS), and chronopotentiometry. The results showed that GN/MnO2 (10 wt% graphene) displayed a specific capacitance of 244 F/g at a current density of 100 mA/g. An excellent cyclic stability was obtained with a capacity retention of approximately 94.3% after 500 cycles in a 1 mol/L Li2SO4 solution. The improved electrochemical performance is attributed to the hierarchy structure of the manganese dioxide, which can enlarge the interface between the active materials and the electrolyte. The preparation route provides a new approach for hierarchy structure graphene composites; this work could be readily extended to the preparation of other graphene-based composites with different structures for use in energy storage devices. (C) 2013 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
| Keyword | Graphene Mno2 Hierarchy Structure Supercapacitor |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/j.partic.2012.12.008 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | ELECTROCHEMICAL CAPACITORS ; GRAPHENE OXIDE ; ELECTRODE ; DEPOSITION ; FILMS |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Chemical ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000340329500005 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/11355 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Chen, Zhong,Li, Jianling,Chen, Yu,et al. Microwave-hydrothermal preparation of a graphene/hierarchy structure MnO2 composite for a supercapacitor[J]. PARTICUOLOGY,2014,15(4):27-33. |
| APA | Chen, Zhong.,Li, Jianling.,Chen, Yu.,Zhang, Yakun.,Xu, Guofeng.,...&Feng, Ye.(2014).Microwave-hydrothermal preparation of a graphene/hierarchy structure MnO2 composite for a supercapacitor.PARTICUOLOGY,15(4),27-33. |
| MLA | Chen, Zhong,et al."Microwave-hydrothermal preparation of a graphene/hierarchy structure MnO2 composite for a supercapacitor".PARTICUOLOGY 15.4(2014):27-33. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Microwave-hydrotherm（2162KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment