title: 3 D Network-Structured Crumpled Graphene/Carbon Nanotube/Polyaniline Composites for Supercapacitors.
abstract: Crumpled graphene (CGR) is considered a promising supercapacitor material to achieve high power and energy density because it could overcome the disadvantages of 2 D GR sheets such as aggregation during the electrode fabrication process, reduction of the available surface area, and limitation of the electron and ion transport. Even though CGR shows good results, carbon materials are limited in terms of their capacitance performance. Here, we report highly enhanced supercapacitor materials by fabricating a 3 D composite containing CGR, carbon nanotubes (CNTs), and polyaniline (PANI). The CNTs increased the basal spacing and bridged the defects for electron transfer between the GR sheets in CGR. PANI can enhance the rate of conduction of electrons and offer high pseudocapacitance originating from its redox reactions. The synergistic effect of the CNTs and PANI may also result in a higher electrochemical capacitance and better stability than each individual component as electrode materials for supercapacitors in a two-electrode system. More importantly, the performance of the supercapacitors can be further enhanced by employing 2 D GR as the binder for the composite electrodes, resulting in specific capacitance of 456 F g-1, rate capability of 89 %, and cyclic stability of 97 % after 1000 cycles.
authors.affiliation: Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Deajeon, 34132, Republic of Korea.|Department of Nanomaterials Science and Engineerin, University of Science & Technology, Yuseong-gu, Deajeon, 34113, Republic of Korea.
authors.forename: Eun H
authors.initials: EH
authors.lastname: Jo
authors.affiliation: Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Deajeon, 34132, Republic of Korea.|Department of Nanomaterials Science and Engineerin, University of Science & Technology, Yuseong-gu, Deajeon, 34113, Republic of Korea.
authors.forename: Hee D
authors.initials: HD
authors.lastname: Jang
authors.affiliation: Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Deajeon, 34132, Republic of Korea.|Department of Nanomaterials Science and Engineerin, University of Science & Technology, Yuseong-gu, Deajeon, 34113, Republic of Korea.
authors.forename: Hankwon
authors.initials: H
authors.lastname: Chang
authors.affiliation: Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Deajeon, 34132, Republic of Korea.
authors.forename: Sun K
authors.initials: SK
authors.lastname: Kim
authors.affiliation: Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Deajeon, 34132, Republic of Korea.
authors.forename: Ji-Hyuk
authors.initials: JH
authors.lastname: Choi
authors.affiliation: Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Deajeon, 34132, Republic of Korea.|Department of Nanomaterials Science and Engineerin, University of Science & Technology, Yuseong-gu, Deajeon, 34113, Republic of Korea.
authors.forename: Chong M
authors.initials: CM
authors.lastname: Lee
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D015394:Molecular Structure; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
chemical_list: D000814:Aniline Compounds; D037742:Nanotubes, Carbon; C416807:polyaniline; D006108:Graphite
keywords: carbon nanotubes; crumpled graphene; electrochemical performance; polyaniline; supercapacitors