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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: 3D flexible O/N Co-doped graphene foams for supercapacitor electrodes with high volumetric and areal capacitances
作者: Qin, TF; Wan, ZY; Wang, ZL; Wen, YX; Liu, MT; Peng, SL; He, DY; Hou, J; Huang, F; Cao, GZ
收录类别: SCIE
出版日期: 2016-12-30
刊名: JOURNAL OF POWER SOURCES
卷号: 336, 页码:455-464
出版者: ELSEVIER
出版地: AMSTERDAM
英文摘要: 3D flexible O/N co-doped graphene foams (GF) have been designed and fabricated successfully via combining the compression/hot curing strategy with chemical reduction and hydrothermal treatment, in which melamine foams were used not only as the source of N/O functional groups for the introduction of pseudocapacitance but also as the sacrificial template to inhibit the agglomeration of graphene. Also, the mechanism for method of the compressing/hot curing has been investigated systematically. And the resultant GF demonstrates excellent mechanical strength and flexibility. When the compacting GF is used as free-standing electrodes for supercapacitor, it exhibits more excellent ability of charge storage than that of pristine graphene foams. And 10 MPa-GF electrodes delivers high areal capacitance of 375 mu F cm(-2) at a current density of 1 A g(-1), excellent rate capabilities and superior cycling stability of above 100%. According to the analysis of capacitance contribution for 10 MPa-GF electrode, the pseudocapacitance originated from N/O functional groups is up to-65% of the contribution of total capacitance. Moreover, the symmetric supercapacitor comprised of 10 MPa-GF electrodes presents a maximum energy density of 16 Wh kg(-1) (8 Wh L-1) and a maximum power density of 17 kW kg(-1) (8.6 kW L-1). Published by Elsevier B.V.
关键词: Graphene foams ; Volumetric capacitance ; Areal capacitance ; Flexible ; Supercapacitors
作者部门: [Qin, Tianfeng ; Wan, Zunyuan ; Wang, Zilei ; Wen, Yuxiang ; Liu, Mengting ; Peng, Shanglong ; He, Deyan] Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China ; [Hou, Juan ; Huang, Fei ; Cao, Guozhong] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA
通讯作者: Peng, SL (reprint author), Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China. ; Cao, GZ (reprint author), Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA.
学科分类: Chemistry; Electrochemistry; Energy & Fuels; Materials Science
文章类型: Article
所属项目编号: National Natural Science Foundation of China [61376011, 51362026]
所属项目名称: 国家自然科学基金项目
项目资助者: NSFC
语种: 英语
DOI: 10.1016/j.jpowsour.2016.11.003
ISSN号: 0378-7753
WOS记录号: WOS:000389086900052
IR记录号: WOS:000389086900052
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189270
Appears in Collections:物理科学与技术学院_期刊论文

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Recommended Citation:
Qin, TF,Wan, ZY,Wang, ZL,et al. 3D flexible O/N Co-doped graphene foams for supercapacitor electrodes with high volumetric and areal capacitances[J]. JOURNAL OF POWER SOURCES,2016,336:455-464.
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