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Microwaves as a syn...
Microwaves as a synthetic route for preparing electrochemically active TiO2 nanoparticles
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- Monti, Damien, 1986 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ponrouch, A. (författare)
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),Institute of Material Science of Barcelona (ICMAB)
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- Estruga, M. (författare)
- Universitat Autonoma de Barcelona (UAB)
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- Palacin, M. R. (författare)
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),Institute of Material Science of Barcelona (ICMAB)
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- Ayllon, J. A. (författare)
- Universitat Autonoma de Barcelona (UAB)
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- Roig, A. (författare)
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC),Institute of Material Science of Barcelona (ICMAB)
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(creator_code:org_t)
- 2012-09-24
- 2013
- Engelska.
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Ingår i: Journal of Materials Research. - : Springer Science and Business Media LLC. - 0884-2914 .- 2044-5326. ; 28:3, s. 340-347
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Abstract
Ämnesord
Stäng
- Nanocrystalline anatase was synthesized, using both domestic and laboratory microwave ovens, from different precursors. Nanoparticulate anatase was obtained after microwave irradiation of tetra-butyl orthotitanate solution in benzyl alcohol. As-synthesized samples have orange color due to the presence of organics that were eliminated after annealing at 500 degrees C, whereas the size of small anatase nanocrystals (around 8 nm) was preserved. Other nanocrystalline anatase samples were obtained from hexafluorotitanate-organic salt ionic liquid-like precursors. In this case, use of a domestic microwave oven and very short processing times (1-3 min irradiation time) were involved. Good specific capacity values and capacity retention at high C rates for insertion/deinsertion of Li+ were recorded when testing such nanoparticles as electrode material in lithium cells. The electrochemical performances were found be strongly dependent on the phase composition, which in turn could be tuned through the synthetic procedure.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- facile synthesis
- storage properties
- diffraction
- low-temperature
- titanium-dioxide
- powder
- versatile reaction system
- lithium-ion battery
- benzyl alcohol
- oxide nanoparticles
- assisted synthesis
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- art (ämneskategori)
- ref (ämneskategori)
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