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兰州大学机构库  > 物理科学与技术学院  > 期刊论文
题名: Embedded Ag quantum dots into interconnected Co3O4 nanosheets grown on 3D graphene networks for high stable and flexible supercapacitors
作者: Wang, JY; Dou, W; Zhang, XT; Han, WH(韩卫华); Mu, XM; Zhang, Y; Zhao, XH; Chen, YX; Yang, ZW; Su, Q(苏庆); Xie, EQ(谢二庆); Lan, W(兰伟); Wang, XR
收录类别: SCIE
出版日期: 2017-01-10
刊名: ELECTROCHIMICA ACTA
卷号: 224, 页码:260-268
出版者: ELSEVIER
出版地: OXFORD
英文摘要: High stable, flexible and interconnected Co3O4 nanosheets with embedded Ag quantum dots (AgQDs) were uniformly grown on three dimensional graphene (3DG) networks and served as supercapacitor electrode to enhance the pseudocapacitance performance. The AgQDs were used to facilitate the growth of the Co3O4 nanosheets and improve the electrical conductivity of the hybrid electrode by forming a good ohmic contact and provide direct and stable pathways for rapid electron transport. The AgQDs contribute to produce an improved areal capacitance of 421 mF cm(-2) (1052.5 Fg(-1)) and 53.3 mF cm(-2) for the Ag/Co3O4/3DG hybrid, for both the three- and the two-electrode configuration, respectively. These values are about three times higher compared to a pristine Co3O4/3DG electrode. The capacitance retention of similar to 120% after 10(4) cycles shows that a Ag/Co3O4/3DG hybrid can provide a long and stable cycle performance with a high specific capacitance. This study provides an effective strategy to improve the performance of electrode materials for supercapacitors with a high efficiency and long life, which makes them promising candidates for future energy-storage applications. (C) 2016 Elsevier Ltd. All rights reserved.
关键词: Co3O4 nanosheet ; Ag quantum dot ; Graphene networks ; Supercapacitor
作者部门: [Wang, Junya ; Zhang, Xuetao ; Han, Weihua ; Mu, Xuemei ; Zhang, Yue ; Zhao, Xiaohua ; Chen, Youxin ; Yang, Zhiwei ; Su, Qing ; Xie, Erqing ; Lan, Wei] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China ; [Dou, Wei] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China ; [Lan, Wei] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China ; [Wang, Xinran] Nanjing Univ, Natl Lab Solid State Microstruct, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China ; [Wang, Xinran] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
通讯作者: Lan, W (reprint author), Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China. ; Wang, XR (reprint author), Nanjing Univ, Natl Lab Solid State Microstruct, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China. ; Wang, XR (reprint author), Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China.
学科分类: Electrochemistry
文章类型: Article
所属项目编号: State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology [SKLAB02014003] ; Fundamental Research Funds for the Central Universities [lzujbky-2015-116] ; SRF for ROCS, SEM
所属项目名称: 教育部留学回国人员科研启动基金 ; 中央高校基本科研业务费专项资金
项目资助者: MOE ; LZU
语种: 英语
DOI: 10.1016/j.electacta.2016.12.073
ISSN号: 0013-4686
WOS记录号: WOS:000392165800032
IR记录号: WOS:000392165800032
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189291
Appears in Collections:物理科学与技术学院_期刊论文

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Recommended Citation:
Wang, JY,Dou, W,Zhang, XT,et al. Embedded Ag quantum dots into interconnected Co3O4 nanosheets grown on 3D graphene networks for high stable and flexible supercapacitors[J]. ELECTROCHIMICA ACTA,2017,224:260-268.
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