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<p>Recently, all solid-state lithium batteries (ASSLBs) are a promising approach to avoid safety issues of conventional liquid electrolytes. Among them, the NASICON-type Li<sub>1+x</sub>Al<sub>x</sub>Ti<sub>2−x</sub>(PO<sub>4</sub>)<sub>3</sub> solid electrolyte is one of the most attractive alternatives due to its high ionic conductivity at room temperature and chemical and environmental stability compared to other solid electrolytes. However, the ionic conductivity of Li<sub>1+x</sub>Al<sub>x</sub>Ti<sub>2−x</sub>(PO<sub>4</sub>)<sub>3</sub> solid electrolyte still needs to enhance for the commercialization of oxide based ASSLBs. In this work, we incorporate MoO<sub>3</sub> in Li<sub>1.5</sub>Al<sub>0.5</sub>Ti<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> (LATP) matrix, and the composite structure gives higher ionic conductivity than pristine LATP. Especially, when 1.5&#xa0;wt% of MoO<sub>3</sub> is integrated, it shows a high ionic conductivity of 3.62 × 10<sup>–4</sup>&#xa0;S&#xa0;cm<sup>−1</sup>, which is about 13 times higher value than pristine LATP. The formation of Li<sub>2</sub>MoO<sub>4</sub> secondary phases at the grain boundary, when MoO<sub>3</sub> incorporated, could help the Li ionic transport. This result shows that the MoO<sub>3</sub> incorporation in LATP could be an effective approach for commercializing ASSLBs. </p>

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Preparation and ionic transport properties of MoO3 incorporated LATP solid electrolytes for high performance solid-state lithium batteries

  • 期刊论文

  • 发表日期：

    2025年6月30日

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  • So Yeon Park,
  • Zahid Husain Momin,
  • Sung Hyun Kang,
  • Seulgi Shin,
  • Jong Ho Won,
  • Tirtha Raj Acharya,
  • Eun Ha Choi,
  • Nguyen Van Du,
  • Jae-Geun Ha,
  • Weon Ho Shin

摘要

Recently, all solid-state lithium batteries (ASSLBs) are a promising approach to avoid safety issues of conventional liquid electrolytes. Among them, the NASICON-type Li1+xAlxTi2−x(PO4)3 solid electrolyte is one of the most attractive alternatives due to its high ionic conductivity at room temperature and chemical and environmental stability compared to other solid electrolytes. However, the ionic conductivity of Li1+xAlxTi2−x(PO4)3 solid electrolyte still needs to enhance for the commercialization of oxide based ASSLBs. In this work, we incorporate MoO3 in Li1.5Al0.5Ti1.5(PO4)3 (LATP) matrix, and the composite structure gives higher ionic conductivity than pristine LATP. Especially, when 1.5 wt% of MoO3 is integrated, it shows a high ionic conductivity of 3.62 × 10–4 S cm−1, which is about 13 times higher value than pristine LATP. The formation of Li2MoO4 secondary phases at the grain boundary, when MoO3 incorporated, could help the Li ionic transport. This result shows that the MoO3 incorporation in LATP could be an effective approach for commercializing ASSLBs.