Microwave-hydrothermal preparation of a graphene/hierarchy structure MnO2 composite for a supercapacitor
文献类型：期刊论文
| 作者 | Chen, Zhong1; Li, Jianling1; Chen, Yu1; Zhang, Yakun1; Xu, Guofeng1; Yang, Jun2; Feng, Ye2 |
| 刊名 | PARTICUOLOGY
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 15期号:4页码:27-33 |
| 关键词 | Graphene MnO2 Hierarchy structure Supercapacitor |
| ISSN号 | 1674-2001 |
| 其他题名 | Particuology |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Engineering ; Materials Science |
| 关键词[WOS] | ELECTROCHEMICAL CAPACITORS ; GRAPHENE OXIDE ; ELECTRODE ; DEPOSITION ; FILMS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000340329500005 |
| 公开日期 | 2014-09-30 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/11355]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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