Ceramic breeder research and development: progress and focus

Laan, J.G. van der; Kawamura, Hiroshi; Roux, Nicole; Yamaki, Daiju

doi:10.1016/s0022-3115(00)00352-4

Cited by 109 publications

(70 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…35,36 Besides its potential use as an additive in lithium-ion batteries, 37,38 b-Li 2 TiO 3 is discussed to serve as a blanket material for tritium breeding in deuterium-tritium fusion reactors. [39][40][41][42][43] While the layer-structured b-form reversibly transforms into a cubic g-modification at temperatures higher than approximately 1425 K, 44 the third modification, viz an NaCl-type thermodynamically metastable a-phase with cubic symmetry, undergoes a phase transformation into the b-polymorph at T > 575 K.…”

Section: Introductionmentioning

confidence: 99%

Extremely slow Li ion dynamics in monoclinic Li2TiO3—probing macroscopic jump diffusion via7Li NMR stimulated echoes

Ruprecht

Wilkening

Uecker

et al. 2012

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

A thorough understanding of ion dynamics in solids, which is a vital topic in modern materials and energy research, requires the investigation of diffusion properties on a preferably large dynamic range by complementary techniques. Here, a polycrystalline sample of Li 2 TiO 3 was used as a model substance to study Li motion by both 7 Li spin-alignment echo (SAE) nuclear magnetic resonance (NMR) and ac-conductivity measurements. Although the two methods do probe Li dynamics in quite different ways, good agreement was found so that the Li diffusion parameters, such as jump rates and the activation energy, could be precisely determined over a dynamic range of approximately eleven decades.

show abstract

Section: Introductionmentioning

confidence: 99%

Extremely slow Li ion dynamics in monoclinic Li2TiO3—probing macroscopic jump diffusion via7Li NMR stimulated echoes

Ruprecht

Wilkening

Uecker

et al. 2012

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…However, neither Li 2 TiO 3 nor Li 4 SiO 4 stands out satisfying all the crucial criteria. For example, the lithium loss of Li 4 SiO 4 at 727°C was less than that of Li 2 TiO 3 [8,9]. The thermal conductivity of Li 2 TiO 3 was higher than that of Li 4 SiO 4 [4,10].…”

Section: Introductionmentioning

confidence: 95%

Fabrication and Characterization of Li2TiO3–Li4SiO4 Pebbles for Tritium Breeder

Xiang

Zhang

et al. 2015

J Fusion Energ

View full text Add to dashboard Cite

Lithium based ceramics have been regarded as the promising ceramic breeders of the test blanket modules. As lithium burn-up of ceramic pebbles in the fusion reactor will be limited to about 15 % due to Li transmutation. The phase and composition (Li ? transferring process) of Li 2 TiO 3 -Li 4 SiO 4 ceramic pebbles with a certain amount of Li loss (-xLi 2 TiO 3 and -xLi 4 SiO 4 , x = 0, 5, 10, 20 %, molar ratio) were simulated by thermogravimetry and differential scanning calorimetry and X-ray diffractometer for the first time. The results showed that the Li ? of Li 4 SiO 4 could move to Li 4 Ti 5 O 12 to form Li 2 SiO 3 and Li 2 TiO 3 as the octahedral (16c) sites of Li 4 Ti 5 O 12 are empty. In order to tailor the properties for optimization, 20 % Li 2 TiO 3 -80 % Li 4 SiO 4 pebbles were fabricated by a graphite bed process. In combining these materials, the pebbles obtained reasonable pores, small grains, and relative high crush load.

show abstract

“…Several groups have reported some methods to synthesize Li 2 SiO 3 nanomaterials including solid state reaction, precipitation, sol-gel method, extrusion-spherodisation process, rotating/melting procedures, combustion, electrochemical method, and via hydrothermal method. However, most of the time, a mixture of Li 2 SiO 3 , Li 2 Si 2 O 5 , Li 4 SiO 4 , and SiO 2 was obtained [10,12,[15][16][17][18][19][20][21]. Recently, we have reported the synthesis of highly pure and crystalline lithium metasilicate nanomaterials through a mild condition hydrothermal method using lithium nitrate and silicic acid as raw materials at 1:2 Li:Si molar ratio [22,25].…”

Section: Introductionmentioning

confidence: 99%

Part I: lithium metasilicate (Li2SiO3)—mild condition hydrothermal synthesis, characterization, and optical properties

Alemi

Khademinia

2014

Int Nano Lett

View full text Add to dashboard Cite

Using LiNO 3 and SiO 2 as raw materials, Li 2 SiO 3 nano-powders were synthesized via a nonstoichiometric 2:3 Li:Si molar ratio hydrothermal reaction at 180°C for 48, 72, and 96 h in a NaOH aqueous solution system. The synthesized materials were characterized by powder X-ray diffraction technique and Fourier transform infrared spectroscopy. To investigate the effect of the reaction time on the morphology of the obtained materials, the morphologies of the synthesized materials were studied by field emission scanning electron microscopy technique. The technique showed that on increasing the reaction time, the morphology of the as-prepared samples changed from belt structures to flower structures. Ultraviolet-Visible spectra analyses showed that the nanostructured lithium silicate powders had good light absorption properties in the ultraviolet light region. Also, photo luminescence spectra and cell parameter refinement of the obtained materials were studied.

show abstract

Ceramic breeder research and development: progress and focus

Cited by 109 publications

References 20 publications

Extremely slow Li ion dynamics in monoclinic Li2TiO3—probing macroscopic jump diffusion via7Li NMR stimulated echoes

Extremely slow Li ion dynamics in monoclinic Li2TiO3—probing macroscopic jump diffusion via7Li NMR stimulated echoes

Fabrication and Characterization of Li2TiO3–Li4SiO4 Pebbles for Tritium Breeder

Part I: lithium metasilicate (Li2SiO3)—mild condition hydrothermal synthesis, characterization, and optical properties

Contact Info

Product

Resources

About