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3D hierarchical porous graphene aerogel with tunable meso-pores on graphene nanosheets for high-performance energy storage
Long Ren1,4; K. N. Hui2; K. S. Hui3; Yundan Liu1; Xiang Qi1; Jianxin Zhong1; Yi Du4; Jianping Yang4,5
2015-09
Source PublicationScientific Reports
ISSN2045-2322
Volume5
Abstract

New and novel 3D hierarchical porous graphene aerogels (HPGA) with uniform and tunable meso-pores (e.g., 21 and 53 nm) on graphene nanosheets (GNS) were prepared by a hydrothermal self-assembly process and an in-situ carbothermal reaction. The size and distribution of the meso-pores on the individual GNS were uniform and could be tuned by controlling the sizes of the Co3O4 NPs used in the hydrothermal reaction. This unique architecture of HPGA prevents the stacking of GNS and promises more electrochemically active sites that enhance the electrochemical storage level significantly. HPGA, as a lithium-ion battery anode, exhibited superior electrochemical performance, including a high reversible specific capacity of 1100 mAh/g at a current density of 0.1 A/g, outstanding cycling stability and excellent rate performance. Even at a large current density of 20 A/g, the reversible capacity was retained at 300 mAh/g, which is larger than that of most porous carbon-based anodes reported, suggesting it to be a promising candidate for energy storage. The proposed 3D HPGA is expected to provide an important platform that can promote the development of 3D topological porous systems in a range of energy storage and generation fields.

DOI10.1038/srep14229
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000361370100002
PublisherNATURE PUBLISHING GROUP, MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
The Source to ArticleScopus
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Cited Times [WOS]:102   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorLong Ren; K. N. Hui; K. S. Hui
Affiliation1.Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, and School of Physics and Optoelectronics, Xiangtan University, Hunan 411105, People’s Republic of China
2.Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau.
3.Department of Mechanical Convergence Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea
4.Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus, North Wollongong, New South Wales 2500, Australia
5.College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
Recommended Citation
GB/T 7714
Long Ren,K. N. Hui,K. S. Hui,et al. 3D hierarchical porous graphene aerogel with tunable meso-pores on graphene nanosheets for high-performance energy storage[J]. Scientific Reports,2015,5.
APA Long Ren,K. N. Hui,K. S. Hui,Yundan Liu,Xiang Qi,Jianxin Zhong,Yi Du,&Jianping Yang.(2015).3D hierarchical porous graphene aerogel with tunable meso-pores on graphene nanosheets for high-performance energy storage.Scientific Reports,5.
MLA Long Ren,et al."3D hierarchical porous graphene aerogel with tunable meso-pores on graphene nanosheets for high-performance energy storage".Scientific Reports 5(2015).
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