Low-temperature fabrication of Li2O porous ceramic pebbles by two-stage support decomposition. (26th July 2019)

• Record Type: Journal Article
• Authors: Chen, Ruichong; Yang, Mao; Shi, Yanli; Wang, Hailiang; Guo, Hao; Zeng, Yuanyuan; Qi, Jianqi; Shi, Qiwu; Liao, Zhijun; Lu, Tiecheng
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 36(2019)
• Page Start: 20249
• Page End: 20256
• Publication Date: 2019-07-26
• Subjects: Tritium breeder -- Li2O pebbles -- Two-stage support decomposition -- Porous structure; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.06.009
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this study, Li2 O porous ceramic pebbles were synthesized by decomposing the xLi2 CO3 -yLiNO3 precursor pebbles at low temperature. This efficient decomposition reaction was mainly attributed to the two-stage support decomposition of Li2 CO3 and LiNO3 . The results indicated that the molar ratio of Li2 CO3 and LiNO3 will directly affect the phase composition, pore structure and crush load of sintered pebbles. The high-purity Li2 O ceramic pebbles sintered from Li2 CO3 –LiNO3 precursor pebbles at 730 °C exhibits the open porosity of 24.8 ± 0.7%. The crush load of the ceramic reaches 21.18 ± 1.38 N although the structure was porous. The Li2 O porous ceramics fabricated in this study will have potential application in tritium breeder materials. Highlights: High-purity Li2 O porous ceramic pebbles can be achieved by a novel method. Two-stage support decomposition can realize the efficient synthesis of Li2 O. The effect of Li2 CO3 /LiNO3 molar ratio on the phase composition was clarified. Li2 O ceramic pebble shows high open porosity and satisfactory crush load.