Lithium titanate is one of the most promising candidates among advanced tritium breeders for fusion reactors. However, the tritium breeding ratio (TBR) of Li₂TiO₃ is smaller than that of Li₂O or Li₈TiO_6, etc., due to its lower Li density. Therefore, new Li-containing ceramics with both high stability and high Li density need to be further explored. In this work, the Li_2+xTiO₃ powder with high Li content was prepared by the sol-gel method, and the pebbles were fabricated by a wet forming process. The effect of excess lithium on the crystal structure and performance of Li_2+xTiO₃ were systematically investigated. The synthesis temperature of Li_2+xTiO₃ powder with a well-developed crystal structure prepared by this method was 500 °C, and all the diffraction patterns of sintered Li_2+xTiO₃(x = 0–0.4) powder were the same as those of β-Li₂TiO₃ phase and no second phase peaks are observed. These results demonstrated that Li_2+xTiO₃ powder was a solid solution with high Li content. The particle size distribution of Li_2+xTiO₃ powder was about 40–90 nm. As x = 0.3, the Li content is stable both in Li_2+xTiO₃ powder and pebbles, and the Li_2.3TiO₃ pebbles presented a very high relative density of 87%, a small grain size of 1.8 μm, and good sphericity of 0.98, respectively. Especially, the crushing load reached 50 N. Thus, the Li_2.3TiO₃ solid solution pebble is an important candidate breeder material for advanced tritium breeders.Kindly check and confirm street information is correctly identified for Affiliation 1.The street information is correctly identified for Affiliation 1.We are very grateful for your additions.

钛酸锂是用于聚变反应堆的先进氚增殖剂中最有希望的候选者之一。_{然而，Li 2} TiO ₃的氚增殖率(TBR)由于其较低的Li密度而小于Li ₂ O或Li ₈ TiO _6等。因此，需要进一步探索兼具高稳定性和高锂密度的新型含锂陶瓷。本工作采用溶胶-凝胶法制备高Li含量的Li _{2+ x} TiO ₃粉末，采用湿法成型工艺制备卵石。锂过量对Li _{2+ x} TiO _{3晶体结构和性能的影响}进行了系统的调查。_{该方法制备的晶体结构发达的Li 2+ x} TiO ₃粉末的合成温度为500 ℃，烧结后的Li _{2+ x} TiO ₃ ( x  = 0-0.4)粉末的衍射图谱均为与β-Li ₂ TiO ₃相相同，没有观察到第二相峰。这些结果表明，Li _{2+ x} TiO ₃粉末是具有高Li含量的固溶体。_{Li 2+ x} TiO ₃粉末的粒径分布约为40-90 nm。作为x = 0.3，Li _{2+ x} TiO ₃粉末和卵石中的Li含量稳定，Li _2.3 TiO ₃卵石的相对密度高达87%，晶粒尺寸小1.8 μm，球形度0.98 ， 分别。特别是破碎载荷达到了50N。因此，Li _2.3 TiO ₃固溶卵石是先进氚增殖者的重要候选增殖材料。请检查并确认街道信息正确识别为隶属关系1。街道信息正确识别为隶属关系 1.我们非常感谢您的补充。