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Constructing hierarchical dandelion-like molybdenum-nickel-cobalt ternary oxide nanowire arrays on carbon nanotube fiber for high-performance wearable fiber-shaped asymmetric supercapacitors
Sun, Juan1,2,3; Zhang, Qichong1; Wang, Xiaona1; Zhao, Jingxin1; Guo, Jiabin1; Zhou, Zhenyu1; Zhang, Jun1; Man, Ping1; Sun, Jing3; Li, Qingwen1,2; Yao, Yagang1
2017
Source PublicationJournal of Materials Chemistry A
ISSN20507488
Volume5Issue:40Pages:21153-21160
AbstractEmerging fiber-shaped supercapacitors have been considered as promising new-state energy storage devices for next-generation wearable electronics. However, the limited energy densities arising from the small specific capacitance and low operating voltage severely restrict their practical application. Here, we develop a facile and effective method to directly grow dandelion-like molybdenum-nickel-cobalt ternary oxide (MNCO) nanowire arrays (NWAs) on carbon nanotube fiber (CNTF) with a high specific capacitance of 490.7 F cm-3(1840 mF cm-2) at a current density of 1 mA cm-2. Benefiting from the three-dimensional nanostructure, high conductivity and excellent pseudocapacitance properties, we successfully fabricate a fiber-shaped asymmetric supercapacitor (FASC) with a maximum operating voltage of 1.6 V, which is assembled by twisting a MNCO/CNTF positive electrode and thin carbon-coated VN NWAs on CNTF negative electrode together with KOH/poly(vinyl alcohol) (PVA) as the gel electrolyte. The optimized FASC delivers a remarkable specific capacitance of 62.3 F cm-3(233.7 mF cm-2) and an exceeding energy density of 22.2 mW h cm-3(83.1 μW h cm-2). Additionally, it exhibits outstanding flexibility with capacitance retention maintained at 90.2% after bending 3500 times. Thus, the high performance MNCO/CNTF electrode opens a new avenue to fabricate high-performance FASCs for next-generation wearable energy storage devices. © 2017 The Royal Society of Chemistry.
DOI10.1039/c7ta06353a
EI Accession Number20174304288017
EI KeywordsCapacitance
EI Classification Number525.7 Energy Storage - 701.1 Electricity: Basic Concepts and Phenomena - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804.2 Inorganic Compounds - 819.4 Fiber Products - 933 Solid State Physics
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25691
Collection中国科学院上海硅酸盐研究所
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, China;
2.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 200120, China;
3.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, China
Recommended Citation
GB/T 7714
Sun, Juan,Zhang, Qichong,Wang, Xiaona,et al. Constructing hierarchical dandelion-like molybdenum-nickel-cobalt ternary oxide nanowire arrays on carbon nanotube fiber for high-performance wearable fiber-shaped asymmetric supercapacitors[J]. Journal of Materials Chemistry A,2017,5(40):21153-21160.
APA Sun, Juan.,Zhang, Qichong.,Wang, Xiaona.,Zhao, Jingxin.,Guo, Jiabin.,...&Yao, Yagang.(2017).Constructing hierarchical dandelion-like molybdenum-nickel-cobalt ternary oxide nanowire arrays on carbon nanotube fiber for high-performance wearable fiber-shaped asymmetric supercapacitors.Journal of Materials Chemistry A,5(40),21153-21160.
MLA Sun, Juan,et al."Constructing hierarchical dandelion-like molybdenum-nickel-cobalt ternary oxide nanowire arrays on carbon nanotube fiber for high-performance wearable fiber-shaped asymmetric supercapacitors".Journal of Materials Chemistry A 5.40(2017):21153-21160.
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