Influence of Lithium Mass Transfer on Tritium Behavior in Pebbles of Li2TiO3 with Excess Lithium

Katayama, Kazunari; Ipponsugi, Akito; Hoshino, Tsuyoshi

doi:10.1016/j.fusengdes.2020.112011

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…Researchers initially believed that the overall release process of tritium was mainly controlled by the diffusion process of tritium within the grains of solid breeder materials. However, many recent studies have proposed that in addition to grain diffusion, the reaction on the grain surface is significant for understanding tritium release behavior [90].…”

Section: Tritium Release Mechanismmentioning

confidence: 99%

Recent Progress in Research of Solid Tritium Breeder Materials Li2TiO3: A Review

Chen

Wang

2022

Coatings

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During the past decades, fusion reactor fuels such as deuterium and tritium have been extensively investigated due to increasing interest in nuclear fusion energy. Tritium, which is scarce in nature, needs to be fabricated by tritium breeder materials. Among the commonly investigated tritium breeder materials, lithium titanate (Li2TiO3) is recognized as one of the most promising solid tritium breeder materials because of its considerable lithium (Li) atomic density, low activation, excellent chemical stability, and low-temperature tritium release performance. This paper aims to provide a systematic review of the current progress in Li2TiO3 preparation methods as well as the high Li density, tritium release performance, irradiation behavior, and modification technologies of Li2TiO3 pebbles. Li2TiO3 can be synthesized by strategies such as solid-state, sol–gel, hydrothermal, solution combustion synthesis, and co-precipitation methods. Among them, the hydrothermal method is promising due to its simplicity and low cost. Many researchers have begun to focus on composite ceramic pebbles to further improve tritium breeder performance. This will provide a new direction for the future development of Li2TiO3 pebbles. The present review concludes with a summary of the preparation methods currently under development and offers an outlook of future opportunities, which will inspire more in-depth investigation and promote the practical application of Li2TiO3 in this field.

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Section: Tritium Release Mechanismmentioning

confidence: 99%

Recent Progress in Research of Solid Tritium Breeder Materials Li2TiO3: A Review

Chen

Wang

2022

Coatings

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“…Nevertheless, the shortage of relevant experimental platforms, long experimental periods and high costs have limited the development of tritium breeding materials to a certain extent. To more efficiently grasp the behavior of tritium in lithiumbased breeding ceramic, a method of injecting hydrogen isotopes (tritium or deuterium) out-of-pile is proposed [20][21][22][23]. Although this technology lacks the process of tritium generation from the crystal and migration to the surface, it still has practical significance for studying surface reactions such as tritium adsorption/desorption and isotope exchange.…”

Section: Introductionmentioning

confidence: 99%

The effect of long-term heating on the tritium adsorption and desorption behavior of advanced core–shell breeding materials

et al. 2022

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In order to efficiently grasp the tritium behavior in advanced core-shell breeding materials, this study adopts a route of injecting tritium out-of-pile to deal with the problems of fewer platforms, long periods, and high costs for traditional neutron irradiation-tritium release experiments. Here, tritium adsorption and desorption experiments were carried out with Li4TiO4-Li2TiO3 core-shell breeding materials before and after long-term heating up to 30 days. The purpose is to study whether the structural changes caused by long-term heating will affect the adsorption and desorption behavior of tritium on the sample surface. The results show that the lack of chemically adsorbed water caused by long-term heating will significantly weaken the tritium adsorption capacity of the sample, but will not affect the desorption behavior of Ar, 1%H2+Ar and water vapor on tritium, so all samples show a very low tritium retention.

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Effects of High Li Content on the Crystal Structure and Properties of Li2+xTiO3 Ceramic Pebbles by Sol-Gel Method

Tan

Cai

et al. 2022

J Fusion Energ

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Influence of Lithium Mass Transfer on Tritium Behavior in Pebbles of Li2TiO3 with Excess Lithium

Cited by 4 publications

References 21 publications

Recent Progress in Research of Solid Tritium Breeder Materials Li2TiO3: A Review

Recent Progress in Research of Solid Tritium Breeder Materials Li2TiO3: A Review

The effect of long-term heating on the tritium adsorption and desorption behavior of advanced core–shell breeding materials

Effects of High Li Content on the Crystal Structure and Properties of Li2+xTiO3 Ceramic Pebbles by Sol-Gel Method

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