Garnet-type lithium sensors for the monitoring and control of Pb-Li alloys in tritium breeding modules

Marc Nel-lo, Enric Lujan, Antonio Hinojo, Sergi Colominas, Jordi Abella

Producció científica: Article en revista indexadaArticleAvaluat per experts


During the EU-DEMO conceptualization, eutectic Pb-Li was considered as the prime candidate liquid breeding material. Nonetheless, the conversion of lithium into tritium through the breeding reaction will result in a decrease in the lithium concentration within the alloy. Then, the monitoring of the lithium concentration in Pb-Li alloys is critical for the optimal Tritium Breeding Blanket (TBB) performance, as lithium affects dissolution of structural materials, tritium inventory and extraction rates. Garnet-like ceramics possess desirable properties for their use in lithium sensors, like high lithium-ion conductivity, good chemical stability, low thermal expansion coefficient, and great mechanical strength. For these reasons, electrochemical sensors based on garnet-type ceramics offer advantages for measuring lithium in molten Pb-Li alloys, such as high selectivity and fast response. This work presents the development of lithium sensors based on the garnet-type ceramic Li6BaLa2Ta2O12. The material was characterized by XRD and SEM, exhibiting good crystallinity and a homogeneous microstructure. The sensors were evaluated in a potentiometric configuration in molten Pb-Li alloys with lithium concentrations ranging from 3 to 35 at% Li. Potentiometric measurements were used to obtain correlations that allow the determination of the lithium activity in the lead–lithium alloys studied.

Idioma originalAnglès
Número d’article101588
RevistaNuclear Materials and Energy
Estat de la publicacióPublicada - de març 2024


Navegar pels temes de recerca de 'Garnet-type lithium sensors for the monitoring and control of Pb-Li alloys in tritium breeding modules'. Junts formen un fingerprint únic.

Com citar-ho