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Deptula, A.; Olczak, Teresa; Łada, W.; Sartowska, B.; Chmielewski, A.G.; Alvani, C.; Carconi, P.; Bartolomeo, A. Di; Pierdominici, F.; Casadio, S.

doi:10.1023/a:1015408110989

Cited by 10 publications

(15 citation statements)

References 2 publications

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“…The weight loss peak appears at 423°C and it may be due to the structural changes in the prepared sample. Depula et al [50] reported that all the unstable matters in lithium titanate powder were completely decomposed at 630°C. They also found that the lithium titanate is very stable while heating from 630 to 1300°C.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Synthesis and characterization of nanostructured lithium titanate by simple peroxo route

Selvamurugan

Hirankumar²,

Karuppuchamy

2016

J Mater Sci: Mater Electron

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Li 4 Ti 5 O 12 nanopowder was successfully synthesized by simple peroxo-solution growth technique. The physicochemical properties of synthesized powders were studied by powder X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy and Scanning electron microscopy. The effect of calcination on structure, morphology and the electrochemical performances of Li 4 Ti 5 O 12 have also been investigated. The electrochemical property of the Li 4 Ti 5 O 12 was analyzed by galvanostatic charge/discharge test. The storage capacity of 90.27 mAh g -1 was achieved for Li 4 Ti 5 O 12 nanopowder.

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Section: Thermogravimetric Analysismentioning

confidence: 99%

Synthesis and characterization of nanostructured lithium titanate by simple peroxo route

Selvamurugan

Hirankumar²,

Karuppuchamy

2016

J Mater Sci: Mater Electron

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“…LiOH monohydrate and LiCl (both Alfa Aesar, 99%) were examined for use as Li precursor compounds following similar methods for solution processing of metal oxides [23,27]. Prior to use, LiCl and LiOH·H 2 O were vacuum dried at 180°C yielding anhydrous products as confirmed by mass balance.…”

Section: Methodsmentioning

confidence: 99%

“…Precipitated and dried compounds exhibit rapid decomposition and consequent phase segregation leading to deviation in stoichiometry. In similarity to other work involving chloride precursor compounds (TiCl) [27], the issue of chloride removal further discourages the use of this method for pebble fabrication.…”

Section: Xrdmentioning

confidence: 99%

“…Such methods readily allow the fabrication of pebbles with well controlled geometry, density and consistency and reprocessing by melting and by wet chemical methods has further been the subject of various research efforts [21,22]. In parallel, multiple solution based syntheses for lithium metatitanate and orthosilicate have been reported to date [23][24][25][26][27][28]. Such processes generally utilise organometallic compounds and/or salts as Si, Ti and Li precursors for the synthesis of oxides of various stoichiometry.…”

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confidence: 99%

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Solution based synthesis of mixed-phase materials in the Li2TiO3–Li4SiO4 system

Hanaor

Kolb

Gan

et al. 2015

Journal of Nuclear Materials

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Abstract:As candidate tritium breeder materials for use in the ITER helium cooled pebble bed, ceramic multiphasic compounds lying in the region of the quasi-binary lithium metatitanate-lithium orthosilicate system may exhibit mechanical and physical advantages relative to single phase materials. Here we present an organometallic solution-based synthesis procedure for the low-temperature fabrication of compounds in the Li 2 TiO 3 -Li 4 SiO 4 region and investigate phase stability and transformations through temperature varied X-ray diffraction and scanning calorimetry. Results demonstrate that the metatitanate and metasilicate phases Li 2 TiO 3 and Li 2 SiO 3 readily crystallise in nanocrystalline form at temperatures below 180°C. Lithium deficiency in the region of 5% results from Li sublimation from Li 4 SiO 4 and/or from excess Li incorporation in the metatitanate phase and brings about a stoichiometry shift and product compounds with mixed lithium orthosilicate/ metasilicate content towards the Si rich region and predominantly Li 2 TiO 3 content towards the Ti rich region. Above 1150°C the transformation of monoclinic to cubic γ-Li 2 TiO 3 disordered solid-solution occurs while the melting of silicate phases indicates a likely monotectic type system with a solidus line in the region 1050°-1100°C. Synthesis procedures involving a lithium chloride precursor are not likely to be a viable option for breeder pebble synthesis as this route was found to yield materials with a more significant Li-deficiency exhibiting the crystallisation of the Li 2 TiSiO 5 phase at intermediate compositions.

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“…There are several major methods to prepare the lithium ceramic pebbles: sol-gel [4], extrusion-spheronization-sintering [5], agglomeration-sintering [6], melting-spraying [7] and wet processes [8,9]. The basic properties of the lithium ceramic pebbles used in ITER blanket should satisfy the needs of China Test Blanket Module (CH TBM) design: small diameter (0.5-1.0 mm), high density (>80% TD), small grain size, micro-porous structure, high crush load and material purity [10].…”

Section: Introductionmentioning

confidence: 99%