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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13960
Title: Improved energy storage, magnetic and electrical properties of aligned, mesoporous and high aspect ratio nanofibers of spinel-NiMn 2 O 4
Authors: Bhagwan J.
Rani S.
Sivasankaran V.
Yadav, Kamlesh Kumar
Sharma, Yogesh Kumar
Published in: Applied Surface Science
Abstract: Spinel-NiMn 2 O 4 (NMO) nanofibers of high aspect ratio, high surface area (50 m 2  g −1 ) and homogeneous pore size distribution are fabricated by electrospinning process and characterized by XRD, FTIR, XPS, BET, FESEM, TEM techniques. Further, multifunctional properties (energy storage properties, magnetic and electrical properties) of NMO nanofibers are also examined. High specific capacitance (C s ) of 410 (±5) F g −1 at 1 A g −1 , good rate capability and high cycling stability (up to 5000 cycles) are demonstrated by NMO nanofibers. Furthermore, NMO-based solid-state symmetric supercapacitor (SSSC) shows a high C s of 170 (±5) F g −1 at 0.5 A g −1 in potential range of 0.0V–2.0 V and exhibits excellent energy density of ∼95 W h kg −1 and power density of 1030 W Kg −1 . The above storage properties i.e. high energy density and output voltage of 2.0 V are further supplemented by lighting up a red colored LED (1.8 V @ current 20 mA) at least for 5 min. The ionic diffusion coefficient of NMO based electrode is found to be ∼4.84 × 10 −11  cm 2  s −1 . Magnetic and dielectric properties of NMO nanofibers are also examined and results are discussed. © 2017 Elsevier B.V.
Citation: Applied Surface Science (2017), 426(): 913-923
URI: https://doi.org/10.1016/j.apsusc.2017.07.253
http://repository.iitr.ac.in/handle/123456789/13960
Issue Date: 2017
Publisher: Elsevier B.V.
Keywords: Electrical and magnetic properties
Electrospinning
NiMn 2 O 4
Supercapacitor
ISSN: 1694332
Author Scopus IDs: 57147807200
56226803300
37068061800
7005825645
7103066055
Author Affiliations: Bhagwan, J., Centre of Nanotechnology, IIT Roorkee, Roorkee, 247667, India
Rani, S., Centre of Nanotechnology, IIT Roorkee, Roorkee, 247667, India
Sivasankaran, V., Centre of Nanotechnology, IIT Roorkee, Roorkee, 247667, India
Yadav, K.L., Centre of Nanotechnology, IIT Roorkee, Roorkee, 247667, India, Department of Physics, IIT Roorkee, Roorkee, 247667, India
Sharma, Y., Centre of Nanotechnology, IIT Roorkee, Roorkee, 247667, India, Department of Physics, IIT Roorkee, Roorkee, 247667, India
Corresponding Author: Sharma, Y.; Centre of Nanotechnology, IIT RoorkeeIndia; email: yogeshfph@iitr.ac.in
Appears in Collections:Journal Publications [PH]

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