Lamellar Oxygen-Enriched Graphene Hydrogel with Linking-up Network Porous Structure for High-Performance Supercapacitors

doi:10.1021/acs.jpcc.7b12644

	Lamellar Oxygen-Enriched Graphene Hydrogel with Linking-up Network Porous Structure for High-Performance Supercapacitors
	Wang, Xiaotong; Yang, Yuying; Zhang, Quancai; Yang, Xia; Hu, Zhongai
	2018-03-29
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	122 期号:12 页码:6526-6538
摘要	Here, we report a lamellar holey oxygen-enriched graphene hydrogel (LGH) consisting of graphene sheets with a large amount of oxygen functional groups and in-plane pores and confirm its excellent supercapacitive performances. LGH is quite different from the traditional graphene hydrogel in terms of both the morphology and porous structure. Importantly, the in-plane pores on the graphene sheets link up the out-of-plane interval between the graphene sheets to form a linking-up network porous structure. The in-plane pores result in more micropores and the additional oxygen functional groups on graphene sheets. The LGH single electrode exhibits an ultrahigh capacitance (337.8 F g-1 at 1 A g-1) and excellent rate capability (the specific capacitance at 100 A g-1 retains 77% relative to 1 A g-1). The asymmetric supercapacitor is assembled by using the LGH as positive electrode material and the graphene hydrogel that has adsorbed anthraquinone as negative electrode material, respectively. The device exhibits a high energy storage (energy density of 31.5 Wh kg-1 along with power density of 0.9 kW kg-1). © 2018 American Chemical Society.
关键词	Capacitance Electrochemical electrodes Hydrogels Ketones Oxygen Porosity Supercapacitor Asymmetric supercapacitor Graphene hydrogels Negative electrode material Oxygen functional groups Porous structures Positive electrode materials Single electrodes Specific capacitance
DOI	10.1021/acs.jpcc.7b12644
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000429080000004
出版者	American Chemical Society
EI入藏号	20181404984378
EI主题词	Graphene
EI分类号	701.1 Electricity: Basic Concepts and Phenomena ; 804 Chemical Products Generally ; 804.1 Organic Compounds ; 931.2 Physical Properties of Gases, Liquids and Solids
原始文献类型	Journal article (JA)
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.nwnu.edu.cn/handle/39RV6HYL/32190
专题	实体学院_化学化工学院科研机构_生态环境相关高分子材料教育部重点实验室
通讯作者	Yang, Yuying; Hu, Zhongai
作者单位	Northwest Normal Univ, Key Lab Ecoenvironm Related Polymer Mat, Minist Educ, Key Lab Polymer Mat Gansu Prov,Coll Chem & Chem E, Lanzhou 730070, Gansu, Peoples R China
第一作者单位	生态环境相关高分子材料教育部重点实验室
通讯作者单位	生态环境相关高分子材料教育部重点实验室
第一作者的第一单位	生态环境相关高分子材料教育部重点实验室
推荐引用方式 GB/T 7714	Wang, Xiaotong,Yang, Yuying,Zhang, Quancai,et al. Lamellar Oxygen-Enriched Graphene Hydrogel with Linking-up Network Porous Structure for High-Performance Supercapacitors[J]. Journal of Physical Chemistry C,2018,122(12):6526-6538.
APA	Wang, Xiaotong,Yang, Yuying,Zhang, Quancai,Yang, Xia,&Hu, Zhongai.(2018).Lamellar Oxygen-Enriched Graphene Hydrogel with Linking-up Network Porous Structure for High-Performance Supercapacitors.Journal of Physical Chemistry C,122(12),6526-6538.
MLA	Wang, Xiaotong,et al."Lamellar Oxygen-Enriched Graphene Hydrogel with Linking-up Network Porous Structure for High-Performance Supercapacitors".Journal of Physical Chemistry C 122.12(2018):6526-6538.

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