底物对通过电泳沉积获得的LiLaZrO薄膜物理化学性质的影响。
Effect of Substrates on the Physicochemical Properties of LiLaZrO Films Obtained by Electrophoretic Deposition.
作者信息
Lyalin Efim, Il'ina Evgeniya, Pankratov Alexander, Kuznetsova Tamara, Kalinina Elena
机构信息
Laboratory of Electrochemical Power Sources, Institute of High Temperature Electrochemistry, Ural Branch of the Russian Academy of Sciences, 620990 Yekaterinburg, Russia.
Laboratory of Complex Electrophysic Investigations, Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, 620016 Yekaterinburg, Russia.
出版信息
Micromachines (Basel). 2023 Nov 25;14(12):2153. doi: 10.3390/mi14122153.
Thin film technology of lithium-ion solid electrolytes should be developed for the creation of all-solid-state power sources. Solid electrolytes of the LiLaZrO (LLZ) family are one of the promising membranes for all-solid-state batteries. LLZ films were obtained by electrophoretic deposition on Ti, Ni and steel substrates. The influence of different metal substrates on microstructure, phase composition and conductivity of the LLZ films after their heat treatment was studied. It was shown that the annealing of dried LLZ films in an Ar atmosphere leads to the transition from tetragonal modification to a low-temperature cubic structure. It was established that an impurity phase (LiCO) was not observed for LLZ films deposited on Ti foil after heat treatment, in contrast to films deposited on Ni and steel substrates. The highest lithium-ion conductivity values were achieved for the LLZ films annealed at 300 °C, 1.1 × 10 S cm (at 100 °C) and 1.0 × 10 S cm (at 200 °C).
为了制造全固态电源，应开发锂离子固体电解质的薄膜技术。LiLaZrO（LLZ）系列的固体电解质是全固态电池中很有前景的隔膜材料之一。通过电泳沉积在钛、镍和钢基底上获得了LLZ薄膜。研究了不同金属基底对热处理后LLZ薄膜的微观结构、相组成和电导率的影响。结果表明，干燥后的LLZ薄膜在氩气气氛中退火会导致从四方晶型转变为低温立方结构。已确定，与沉积在镍和钢基底上的薄膜相比，热处理后沉积在钛箔上的LLZ薄膜未观察到杂质相（LiCO）。对于在300°C退火的LLZ薄膜，在100°C时锂离子电导率达到最高值1.1×10 S/cm，在200°C时为1.0×10 S/cm。
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