Journal article
Freestanding functionalized carbon nanotube-based electrode for solid-state asymmetric supercapacitors
Nano energy, v 6, pp 1-9
May 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Recently, many attempts have been made to increase the specific capacitance of carbon nanotubes (CNTs). Chemical enhancement by adding redox active functional groups on CNTs increases the specific capacitance, while excessive oxidation decreases conductivity and leads to poor cycle life. Here we report the electrochemical enhancement methods followed by annealing at different temperatures in air to add and adjust the redox active functional groups on freestanding CNT films. Functionalized freestanding CNT films were used as positive electrodes, assembled with freestanding CNT/MoO3−x negative electrodes to fabricate carbon nanotube-based solid-state asymmetric supercapacitors (ASCs). The whole device showed a high volumetric capacitance of 3.0Fcm−3, energy and power density of 1.5mWhcm−3 and 4.2Wcm−3, respectively. We also fabricated a SCs pack to drive a homemade wireless transport system successfully, demonstrating the potential applications of this solid-state system for portable/wearable electronics.
Electrochemical methods followed by annealing to adjust the functional groups were used on freestanding CNT films. Solid-state asymmetric supercapacitors were fabricated by assembling functionalized CNT films with CNT/MoO3−x electrodes. The device showed a volumetric capacitance of 3.0Fcm−3, energy and power density of 1.5mWhcm−3 and 4.2Wcm−3. We also fabricated a SCs pack to drive a homemade wireless transport system, demonstrating the potential for portable electronics. [Display omitted]
•Electrochemical methods followed by annealing to adjust functional groups on CNT.•Solid-state ASCs were fabricated with functionalized CNT and CNT/MoO3−x electrodes.•The device showed high energy and power density of 1.5mWhcm−3 and 4.2Wcm−3.•A SCs pack was applied to drive a home-made wireless transport system.
Metrics
Details
- Title
- Freestanding functionalized carbon nanotube-based electrode for solid-state asymmetric supercapacitors
- Creators
- Xu Xiao - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaTianqi Li - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaZehua Peng - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaHuanyu Jin - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaQize Zhong - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaQiyi Hu - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaBin Yao - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaQiuping Luo - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR ChinaChuanfang Zhang - Department of Materials Science and Engineering, A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USALi Gong - Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou 510275, PR ChinaJian Chen - Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou 510275, PR ChinaYury Gogotsi - Department of Materials Science and Engineering, A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAJun Zhou - Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR China
- Publication Details
- Nano energy, v 6, pp 1-9
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000337932400001
- Scopus ID
- 2-s2.0-84897860466
- Other Identifier
- 991014969875104721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied