Ślubowska Wioleta, Montagne Lionel, Lafon Olivier, Méar François, Kwatek Konrad
Faculty of Physics, Warsaw University of Technology, 00-662 Warsaw, Poland.
UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, University Lille, CNRS, Centrale Lille, University Artois, F-59000 Lille, France.
Nanomaterials (Basel). 2021 Feb 3;11(2):390. doi: 10.3390/nano11020390.
Two families of glasses in the LiO-AlO-BO-TiO-PO system were prepared via two different synthesis routes: melt-quenching and ball-milling. Subsequently, they were submitted to crystallization and yielded the LiA.Ti(PO) (LATP)-based glass-ceramics. Glasses and corresponding glass-ceramics were studied by complementary X-ray diffraction (XRD) and Al, P, Li, B magic-angle spinning nuclear magnetic resonance (MAS NMR) methods in order to compare their structure and phase composition and elucidate the impact of boron additive on their glass-forming properties and crystallization process. XRD studies show that the addition of BO improves the glass-forming properties of glasses prepared by either method and inhibits the precipitation of unwanted phases during heat treatment. MAS NMR studies allowed us to distinguish two LATP phases of slightly different chemical composition suggesting that LATP grains might not be homogeneous. In conclusion, the crystallization of boron-incorporated LATP glasses can is an effective way of obtaining LATP-based solid state electrolytes for the next generation of lithium-ion batteries provided the proper heat-treatment conditions are chosen.
通过两种不同的合成路线制备了LiO-AlO-BO-TiO-PO体系中的两类玻璃：熔融淬火法和球磨法。随后，对它们进行晶化处理，得到了基于LiA.Ti(PO)（LATP）的微晶玻璃。通过互补的X射线衍射（XRD）以及Al、P、Li、B魔角旋转核磁共振（MAS NMR）方法对玻璃及其相应的微晶玻璃进行了研究，以便比较它们的结构和相组成，并阐明硼添加剂对其玻璃形成性能和晶化过程的影响。XRD研究表明，添加BO可改善通过任一方法制备的玻璃的玻璃形成性能，并抑制热处理过程中不需要的相的析出。MAS NMR研究使我们能够区分化学组成略有不同的两个LATP相，这表明LATP晶粒可能不是均匀的。总之，如果选择合适的热处理条件，掺入硼的LATP玻璃的晶化是获得用于下一代锂离子电池的基于LATP的固态电解质的有效方法。
