Mineral-Templated 3D Graphene Architectures for Energy-Efficient Electrodes
Zhang, Mingchao1; Chen, Ke2; Wang, Chunya1; Jian, Muqiang1; Yin, Zhe1; Liu, Zhenglian3; Hong, Guo4; Liu, Zhongfan2; Zhang, Yingying1
Source PublicationSMALL

3D graphene networks have shown extraordinary promise for high-performance electrochemical devices. Herein, the chemical vapor deposition synthesis of a highly porous 3D graphene foam (3D-GF) using naturally abundant calcined Iceland crystal as the template is reported. Intriguingly, the Iceland crystal transforms to CaO monolith with evenly distributed micro/meso/macropores through the releasing of CO2 at high temperature. Meanwhile, the hierarchical structure of the calcined template could be easily tuned under different calcination conditions. By precisely inheriting fine structure from the templates, the as-prepared 3D-GF possesses a tunable hierarchical porosity and low density. Thus, the hierarchical pores offer space for guest hybridization and provide an efficient pathway for ion/charge transport in typical energy conversion/storage systems. The 3D-GF skeleton electrode hybridized with Ni(OH)(2)/Co(OH)(2) through an optimal electrodeposition condition exhibits a high specific capacitance of 2922.2 F g(-1) at a scan rate of 10 mV s(-1), and 2138.4 F g(-1) at a discharge current density of 3.1 A g(-1). The hybrid 3D-GF symmetry supercapacitor shows a high energy density of 83.0 Wh kg(-1) at a power density of 1011.3 W kg(-1) and 31.4 Wh kg(-1) at a high power density of 18 845.2 W kg(-1). The facile fabrication process enables the mass production of hierarchical porous 3D-GF for high-performance supercapacitors.

Keyword3d Graphene Foam Chemical Vapor Deposition Hierarchical Porosity Iceland Crystals Supercapacitors
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Indexed BySCI
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000434174300030
The Source to ArticleWOS
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Cited Times [WOS]:19   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
Corresponding AuthorZhang, Yingying
Affiliation1.Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of EducationDepartment of Chemistry and Center for Nano and Micro Mechanics (CNMM)Tsinghua UniversityBeijing 100084, P. R. China
2.Center for Nanochemistry (CNC)Beijing Science and Engineering Research Center for NanocarbonsBeijing National Laboratory for Molecular SciencesState Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871, P. R. China
3.Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Materials Science and TechnologyChina University of Geosciences (Beijing)Beijing 100083, P. R. China
4.Institute of Applied Physics and Materials EngineeringUniversity of Macau Taipa, Macau, P. R. China
Recommended Citation
GB/T 7714
Zhang, Mingchao,Chen, Ke,Wang, Chunya,et al. Mineral-Templated 3D Graphene Architectures for Energy-Efficient Electrodes[J]. SMALL,2018,14(22).
APA Zhang, Mingchao.,Chen, Ke.,Wang, Chunya.,Jian, Muqiang.,Yin, Zhe.,...&Zhang, Yingying.(2018).Mineral-Templated 3D Graphene Architectures for Energy-Efficient Electrodes.SMALL,14(22).
MLA Zhang, Mingchao,et al."Mineral-Templated 3D Graphene Architectures for Energy-Efficient Electrodes".SMALL 14.22(2018).
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