Scholarlink

<p><b>Abstract</b>—The development and production of thin-film lithium-conducting solid electrolytes is one of the challenging problems for creating all-solid-state power sources. Tape casting enables the production of ceramic materials in the form of thin films thicker than 10 μm. Compounds with a garnet-like structure are considered promising solid electrolytes for such power sources. In this work, Li<sub>6.6</sub>Al<sub>0.05</sub>La<sub>3</sub>Zr<sub>1.75</sub>Nb<sub>0.25</sub>O<sub>12</sub> (LLZAN) films are fabricated by tape casting on a Ti substrate, and the physicochemical properties of the synthesized thin-film solid electrolyte are investigated. A titanium metallic substrate is chosen to provide mechanical strength to the thin ceramic film. After sintering at 600°C, the density of the thin-film electrolyte is 4.1 g cm<sup>–3</sup>, and its electrical conductivity at 215°C is 3.86 × 10<sup>–8</sup> S cm<sup>–1</sup>. X-ray diffraction and Raman spectroscopy revealed the presence of impurity phases (TiO<sub>2</sub>, La<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub>, Li<sub>2</sub>CO<sub>3</sub>) between the Ti substrate and the solid-electrolyte film after heat treatment in an Ar atmosphere. The presence of an intermediate layer of reaction products results in a high resistance at the solid electrolyte/Ti interface.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Physicochemical Properties of Li6.6Al0.05La3Zr1.75Nb0.25O12 Films Fabricated by Tape Casting on Metal Substrates

  • 期刊论文

  • 发表日期：

    2025年2月1日

查看全文
  • E. D. Lyalin,
  • L. S. Pershina,
  • E. A. Il’ina,
  • R. K. Abdurakhimova

摘要

Abstract—The development and production of thin-film lithium-conducting solid electrolytes is one of the challenging problems for creating all-solid-state power sources. Tape casting enables the production of ceramic materials in the form of thin films thicker than 10 μm. Compounds with a garnet-like structure are considered promising solid electrolytes for such power sources. In this work, Li6.6Al0.05La3Zr1.75Nb0.25O12 (LLZAN) films are fabricated by tape casting on a Ti substrate, and the physicochemical properties of the synthesized thin-film solid electrolyte are investigated. A titanium metallic substrate is chosen to provide mechanical strength to the thin ceramic film. After sintering at 600°C, the density of the thin-film electrolyte is 4.1 g cm–3, and its electrical conductivity at 215°C is 3.86 × 10–8 S cm–1. X-ray diffraction and Raman spectroscopy revealed the presence of impurity phases (TiO2, La2Zr2O7, Li2CO3) between the Ti substrate and the solid-electrolyte film after heat treatment in an Ar atmosphere. The presence of an intermediate layer of reaction products results in a high resistance at the solid electrolyte/Ti interface.