Facile Synthesis of Porous Mn3O4 Nanocrystal-Graphene Nanocomposites for Electrochemical Supercapacitors | |
Department | 先进润滑与防护材料研究发展中心 |
Wang DW(汪德伟)1,2; Li YQ(李裕琪)1,2; Wang QH(王齐华)1; Wang TM(王廷梅)1; Wang QH(王齐华) | |
The second department | 固体润滑国家重点实验室 |
2012 | |
Source Publication | European Journal of Inorganic Chemistry |
ISSN | 1434-1948 |
Issue | 4Pages:628-635 |
Abstract | In this work, we describe our efforts to produce Mn3O4–graphene nanocomposites based on a convenient andfeasible solution based synthetic route under mild conditions. According to transmission electron microscopy (TEM) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) results porous Mn3O4 nanocrystals (NCs), 20–40 nm in size, are uniformly deposited on both sides of the graphene nanosheet (GNS) matrix. Significantly, the as-prepared Mn3O4–graphene nanocomposites exhibit remarkable pseudocapacitive activity including high specific capacitance (236.7 F g–1 at 1 A g–1), good rate capability (133 F g–1 at 8 A g–1), and excellent cyclability (the specific capacitance only decreases by 6.32 % of the initial capacitance after 1000 cycles). The excellent pseudocapacitive performance of the Mn3O4–graphene nanocomposites electrode is probably due to the positive synergistic effects between the Mn3O4 and GNS. Namely, the intimate combination of the conductive graphene network with uniformly dispersed porous Mn3O4 NCs not only greatly improves the electrochemical utilization of Mn3O4, but also increases the double-layer capacitance of the graphene sheets. These characteristics make this nanocomposite a very promising electrode material for high performance supercapacitors. |
Keyword | Manganese Nanoparticles Graphene Energy Conversion Electrochemistry Supercapacitors |
Subject Area | 材料科学与物理化学 |
DOI | 10.1002/ejic.201100983 |
Funding Organization | the National Science Foundation for Distinguished Young Scholarsof China (grant number 51025517);the National 973 project of China (2007CB607606);National Defense Basic Scientific Research Project (A1320110011) |
Indexed By | SCI |
If | 3.120 |
Language | 英语 |
Funding Project | 聚合物自润滑复合材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/3336 |
Collection | 固体润滑国家重点实验室(LSL) 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 |
Corresponding Author | Wang QH(王齐华) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 10039, Peoples R China |
Recommended Citation GB/T 7714 | Wang DW,Li YQ,Wang QH,et al. Facile Synthesis of Porous Mn3O4 Nanocrystal-Graphene Nanocomposites for Electrochemical Supercapacitors[J]. European Journal of Inorganic Chemistry,2012(4):628-635. |
APA | Wang DW,Li YQ,Wang QH,Wang TM,&王齐华.(2012).Facile Synthesis of Porous Mn3O4 Nanocrystal-Graphene Nanocomposites for Electrochemical Supercapacitors.European Journal of Inorganic Chemistry(4),628-635. |
MLA | Wang DW,et al."Facile Synthesis of Porous Mn3O4 Nanocrystal-Graphene Nanocomposites for Electrochemical Supercapacitors".European Journal of Inorganic Chemistry .4(2012):628-635. |
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628-635.PDF(768KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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