Electrochemical and Magnetic Properties of Electrospun SrTi{sub 1−x}Fe{sub x}O{sub 3} (x = 0, 0.05 and 0.10) Nanofibers for Anodes of Li-Ion Batteries

Journal Article · Fri Jun 15 00:00:00 EDT 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4411-Z· OSTI ID:22771164

Karaphun, Attaphol ^[1]; Kaewmala, Songyoot; Meethong, Nonglak ^[2]; Hunpratub, Sitchai ^[3]; Swatsitang, Ekaphan ^[1]

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1. Khon Kaen University, Nanotec - KKU Center of Excellence on Advanced Nanomaterials for Energy Production and Storage, Department of Physics, Faculty of Science (Thailand)
2. Khon Kaen University, Materials Science and Nanotechnology Program, Department of Physics, Faculty of Science (Thailand)
3. Udon Thani Rajabhat University, Department of Physics, Faculty of Science (Thailand)

SrTi{sub 1−x}Fe{sub x}O{sub 3} (x = 0, 0.05 and 0.1) nanofibers (NFs) were fabricated by electrospinning technique. As prepared products were calcined at 800 {sup ∘} C in argon atmosphere for 3 h to obtain a perovskite phase. The crystal structure and morphology of samples were investigated using X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Electrochemical and magnetic properties of calcined NFs were studied using a potentiostat/galvanostat electrochemical cell system and vibrating sample magnetometer (VSM), respectively. XRD results showed the cubic perovskite structure of calcined samples with the diameter estimated by TEM in the range of 137.4–141.3 nm SEM micrographs revealed the linkage of crystalline grains in NFs of porous and rough surfaces. Electrochemical properties performed on coin-cell-type Li-ion batteries (LIBs) with calcined SrTi{sub 1−x}Fe{sub x}O{sub 3} (x = 0.05 and 0.10) NF-based anodes showed a significant increase of the specific capacity from 305 to 431 mAh/g for the first cycle with the reversible values of 100 and 130 mAh/g, respectively. VSM measurements at room temperature (RT) indicated that calcined SrTiO{sub 3} NFs exhibited paramagnetic (PM) behavior, while calcined SrTi{sub 1−x}Fe{sub x}O{sub 3} NFs displayed ferromagnetic (FM) behavior at RT with the increase of unsaturated magnetization at 10 kOe from 0.46 to 0.82 emu/g for samples with x = 0.05 and 0.10, respectively. The observed FM behavior in calcined SrTi{sub 1−x}Fe{sub x}O{sub 3} (x = 0.05 and 0.1) NFs was suggested to originate from the face center exchange (FCE) mechanism owing to Fe{sup 3+} –Vo–Fe{sup 3+} couplings.

• OSTI ID: 22771164
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 6; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANODES
ARGON
CONTROLLED ATMOSPHERES
CRYSTAL STRUCTURE
ELECTROCHEMISTRY
IRON IONS
IRON OXIDES
LITHIUM ION BATTERIES
MAGNETIZATION
MORPHOLOGY
NANOFIBERS
PEROVSKITE
POROUS MATERIALS
POTENTIOSTATS
SCANNING ELECTRON MICROSCOPY
STRONTIUM TITANATES
TEMPERATURE RANGE 0273-0400 K
TRANSMISSION ELECTRON MICROSCOPY
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION