Rocking Chair Lithium Battery Based on Nanocrystalline TiO2 (Anatase)

This work describes the production of nanocrystalline TiO2 and SnO2 oxides, as well as their nanocomposites (containing 26.9, 58.7 and 79.0wt.% of SnO2) with two-stage sol-gel method combined with high temperature treatment. The phase composition and medium size crystallites were determined using X-ray diffraction analysis (XRD) and revealed that the nanocomposites crystallize in tetragonal structures of TiO2 - anatase and SnO2 - cassiterite. Specific surface area of the nanopowders, measured using sorption method (BET), changed from 42.1 to 160.8m2/g. The morphology of the nanopowders was observed using transmission electron microscope (TEM). As indicated by TEM images, the manufactured nanopowders were well crystallized and consisted of small, spherical grains. The obtained nanopowders were also tested for NH3 gas detection application. The presented method of nanopowders synthesis enables to obtain nanocrystalline TiO2 and SnO2 oxides, as well as composites from TiO2-SnO2 of known and controlled chemical and phase composition. It also enables to obtain composites used for gas sensors. The sensor made of composite containing 58.7wt.% of SnO2 exhibited the best NH3 sensing features.

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Reactivity of Nanocrystalline TiO2(Anatase and Rutile) Synthesized under Hydrothermal Conditions

Doklady Chemistry ◽

10.1023/b:doch.0000017273.23059.5b ◽

2004 ◽

Vol 394 (4-6) ◽

pp. 36-38 ◽

Cited By ~ 3

Author(s):

D. S. Torkhov ◽

P. E. Meskin ◽

Yu. V. Kolen'ko ◽

V. A. Ketsko ◽

A. A. Burukhin ◽

...

Keyword(s):

Hydrothermal Conditions ◽

Nanocrystalline Tio2 ◽

Tio2 Anatase

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Room Temperature Synthesis and Thermal Evolution of Porous Nanocrystalline TiO2 Anatase

Chemistry of Materials ◽

10.1021/cm201602a ◽

2012 ◽

Vol 24 (2) ◽

pp. 245-254 ◽

Cited By ~ 40

Author(s):

Aiat Hegazy ◽

Eric Prouzet

Keyword(s):

Room Temperature ◽

Thermal Evolution ◽

Temperature Synthesis ◽

Nanocrystalline Tio2 ◽

Room Temperature Synthesis ◽

Tio2 Anatase

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Nanocrystalline TiO2 for Solar Cells and Lithium Batteries

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.51.20 ◽

2006 ◽

Vol 51 ◽

pp. 20-29 ◽

Cited By ~ 6

Author(s):

Ladislav Kavan

Keyword(s):

Solar Cells ◽

Lithium Batteries ◽

Tio2 Surface ◽

Li Ion Batteries ◽

Nanocrystalline Tio2 ◽

Tio2 Anatase ◽

Storage Mechanism ◽

Photoelectrochemical Solar Cells ◽

Li Ion ◽

Li Storage

Nanocrystalline TiO2 (anatase) has attracted considerable interest for applications in photoelectrochemical solar cells. This device is based on charge injection from photoexcited organometallic dye which is adsorbed on the TiO2 surface. Titanium dioxide can electrochemically accommodate Li+ which is useful for a design of new Li-ion batteries. Whereas the charge storage in anatase or rutile is based on the Li-insertion into the bulk crystal, the monoclinic TiO2(B) exhibits an unusual pseudocapacitive Li-storage mechanism. The photoelectrochemical and Liinsertion activity of mesoscopic TiO2 depend significantly on the electrode morphology.

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Synchrotron Radiation Investigation of Thermal Stability and Grain-Growth in Pure and Metal-Doped Nanocrystalline TiO2

Materials Science Forum ◽

10.4028/www.scientific.net/msf.467-470.1307 ◽

2004 ◽

Vol 467-470 ◽

pp. 1307-1312 ◽

Cited By ~ 4

Author(s):

R. Nicula ◽

M. Stir ◽

E. Burkel

Keyword(s):

Thermal Stability ◽

Synchrotron Radiation ◽

Secondary Phases ◽

Nanocrystalline Tio2 ◽

Tio2 Anatase ◽

Average Grain Size ◽

Synchrotron Radiation Diffraction ◽

Metal Doped ◽

And Control ◽

Grain Boundary Motion

The crystallization and coarsening of pure and metal-doped (M: Ag, Fe, Co) TiO2 amorphous specimens were studied during in-situ synchrotron radiation diffraction experiments. The temperature and time dependence of the average grain-size of TiO2 anatase and rutile constituent phases was determined. Excess vacancies, secondary phases or solute elements cause the pinning of the grain-boundary motion, control the onset of the anataserutile transition and control the thermal stability of ultrafine microstructures in nanocrystalline TiO2 ceramics.

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