Microwave-assisted hydrothermal synthesis of NH4V3O8 microcrystals with controllable morphology
Water-free NH4V3O8 microcrystals have been successfully synthesized by a microwave-assisted hydrothermal synthesis method. The products were characterized by means of X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis, cyclic voltam...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
7 June 2016
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| In: |
Materials research bulletin
Year: 2016, Volume: 83, Pages: 225-229 |
| ISSN: | 1873-4227 |
| DOI: | 10.1016/j.materresbull.2016.06.010 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.materresbull.2016.06.010 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0025540816302549 
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| Author Notes: | G.S. Zakharova, A. Ottmann, B. Ehrstein, R. Klingeler |
| Summary: | Water-free NH4V3O8 microcrystals have been successfully synthesized by a microwave-assisted hydrothermal synthesis method. The products were characterized by means of X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis, cyclic voltammetry, and galvanostatic cycling. The results show phase-pure products whose particle size and morphology can be tailored by varying the reaction conditions temperature, time, and initial pH value. For instance, at low pH (2.5⿿3) flower-like agglomerates with primary particles of 20⿿30μm length are found, while at pH 5.5 single microplates with hexagonal outline (30⿿40μm) prevail. The electrochemical studies show reversible lithium de-/intercalation into the layered NH4V3O8 host structures with a maximum initial discharge capacity of 378mAhg⿿1 at 10mAg⿿1. However, there is no clear effect of the materials⿿ morphology on their electrochemical performance. |
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| Item Description: | Gesehen am 01.10.2021 Im Titel sind die Zahlen 4, 3 und 8 tiefgestellt |
| Physical Description: | Online Resource |
| ISSN: | 1873-4227 |
| DOI: | 10.1016/j.materresbull.2016.06.010 |