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Hierarchically-structured Co3O4 nanowire arrays grown on carbon nanotube fibers as novel cathodes for high-performance wearable fiber-shaped asymmetric supercapacitors
Sun, Juan1,2,3,4; Man, Ping1; Zhang, Qichong1; He, Bing1; Zhou, Zhenyu1; Li, Chaowei1; Wang, Xiaona1; Guo, Jiabin1; Zhao, Jingxin1; Xie, Liyan1; Li, Qingwen1,2,4; Sun, Jing3,4; Hong, Guo5; Yao, Yagang1,2,4
2018-07-31
Source PublicationAPPLIED SURFACE SCIENCE
ISSN0169-4332
Volume447Pages:795-801
Abstract

Fiber-shaped supercapacitors (FSCs) are lightweight and flexible energy storage devices that have potential applications in portable and wearable electronics. However, FSCs have flawed energy density stemming from a small specific capacitance and low operating voltage, which limits their practical application. This study puts forth a simple and effective approach to grow well-aligned three-dimensional cobalt oxide nanowire arrays (Co3O4 NWAs) directly on carbon nanotube fibers (CNTFs). The hybrid fibers obtained an ultrahigh specific capacitance of 734.25 F cm(-3) (2210 mF cm(-2)) in a three-electrode system. Benefiting from their intriguing features, we successfully fabricated an all-solid-state fiber-shaped asymmetric supercapacitor (FASC) prototype with a stable potential window of 1.6 V. Where the vanadium nitride nanowires/carbon nanotube fibers (VN NWAs/CNTFs) acted as negative electrode and the KOH poly(vinyl alcohol) (PVA) worked as the gel electrolyte. The electrochemical results suggested that the device possessed a high energy density of 13.2 mWh cm(-3) at a current density of 1.0 A cm(-3). Besides, the FASC exhibited excellent mechanical flexibility and structural stability. Therefore, this device has great potential for next-generation wearable energy-storage devices. (C) 2018 Elsevier B.V. All rights reserved.

KeywordCo3o4 Carbon Nanotube Fibers Specific Capacitance Fiber-shaped Asymmetric Supercapacitor
DOI10.1016/j.apsusc.2018.03.244
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000432795500096
PublisherELSEVIER SCIENCE BV
The Source to ArticleWOS
Fulltext Access
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Cited Times [WOS]:11   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Applied Physics and Materials Engineering
Corresponding AuthorHong, Guo; Yao, Yagang
Affiliation1.Division of Advanced Nanomaterials, Key Laboratory of Nanodevices and Applications, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, PR China
2.School of Physical Science and Technology, ShanghaiTech University, Shanghai 200120, PR China
3.The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, University of Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China
4.University of Chinese Academy of Sciences, Beijing 100049, PR China
5.Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau
Corresponding Author AffilicationInstitute of Applied Physics and Materials Engineering
Recommended Citation
GB/T 7714
Sun, Juan,Man, Ping,Zhang, Qichong,et al. Hierarchically-structured Co3O4 nanowire arrays grown on carbon nanotube fibers as novel cathodes for high-performance wearable fiber-shaped asymmetric supercapacitors[J]. APPLIED SURFACE SCIENCE,2018,447:795-801.
APA Sun, Juan.,Man, Ping.,Zhang, Qichong.,He, Bing.,Zhou, Zhenyu.,...&Yao, Yagang.(2018).Hierarchically-structured Co3O4 nanowire arrays grown on carbon nanotube fibers as novel cathodes for high-performance wearable fiber-shaped asymmetric supercapacitors.APPLIED SURFACE SCIENCE,447,795-801.
MLA Sun, Juan,et al."Hierarchically-structured Co3O4 nanowire arrays grown on carbon nanotube fibers as novel cathodes for high-performance wearable fiber-shaped asymmetric supercapacitors".APPLIED SURFACE SCIENCE 447(2018):795-801.
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