Li2TiO3 pebbles reprocessing, recovery of 6Li as Li2CO3

Alvani, C.; Casadio, S.; Contini, V.; Bartolomeo, A. Di; Lulewicz, J.D; Roux, Nicole

doi:10.1016/s0022-3115(02)01119-4

Cited by 25 publications

(27 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It shows good chemical stability in air [1] and acceptable mechanical strength [2], and displays compatibility with other structural components [3], adequate irradiation behavior [4], and low activation and excellent tritium release characteristics at lower temperatures [5,6]. This tritium breeder is most commonly used as pebble or pellet.…”

Section: Introductionmentioning

confidence: 99%

Effect of Li+ ion mobility on the grain boundary conductivity of Li2TiO3 nanoceramics

et al. 2014

View full text Add to dashboard Cite

Lithium titanate (Li 2 TiO 3 ) is one of the most promising candidates among the tritium breeding materials because of its good tritium release capacity. Li concentration has much significance on the diffusivity of tritium in the material. The nanocrystalline single-phase Li 2 TiO 3 with monoclinic structure has been prepared by high energy ball milling followed by calcination at 700 ℃ for 2 h. The field emission scanning electron microscopy (FESEM) studies confirmed uniform distribution of nanocrystalline phase with particle size below 100 nm. The study of the Li + ion diffusion on the sintered sample was investigated by means of electrical conductivity measurements. Electrical properties of the samples were studied in wide temperature (50-500 ℃) and frequency (100 Hz-1 MHz) ranges. The complex impedance spectroscopy (CIS) studies showed the presence of both bulk and grain boundary effects in nanocrystalline Li 2 TiO 3 . The bulk resistance of the samples has been observed to decrease with rise in temperature showing a typical negative temperature coefficient of resistance (NTCR) behavior. The low activation energies of the samples suggested the presence of singly ionized oxygen vacancies in the conduction process. The hopping frequency shifted toward higher frequency with increase in temperature. Activation energy of 0.86 eV was calculated from AC conductivity.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Li+ ion mobility on the grain boundary conductivity of Li2TiO3 nanoceramics

et al. 2014

View full text Add to dashboard Cite

show abstract

“…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

“…Fabrication [14,15] and recycling [16,17] routes have been defined and demonstrated, specifications for DEMO (control of impurities) have been formulated and the production of both CB has reached a semi-industrial level with the maximum capacity of about 150-300 kg/year. The characterisation of these ceramics in out-of-pile conditions have been already concluded including chemical compatibility with EUROFER and purge gas, thermo-mechanical properties, high-temperature long term behaviour, and tritium release characteristic; the preparation of a database that will collect all the available information for the design is ongoing.…”

Section: Materials For the Hcpb Conceptmentioning

confidence: 99%