| Preparation and ionic transport properties of MoO3 incorporated LATP solid electrolytes for high performance solid-state lithium batteries |
So Yeon Park1, Zahid Husain Momin1, Sung Hyun Kang1, Seulgi Shin1, Jong Ho Won2, Tirtha Raj Acharya3, Eun Ha Choi3, Nguyen Van Du4, Jae-Geun Ha1, Weon Ho Shin1
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1Department of Electronic Materials Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
2Department of Energy Engineering, Dankook University, 119 Dandae-Ro, Dongnam-Gu, Cheonan-Si, Chungnam, 31116, Republic of Korea
3Department of Electrical and Biological Physics, Kwangwoon University, 20 Kwangwoon-Ro, Nowon-Gu, Seoul, 01897, Republic of Korea
4Faculty of Fundamental Science, Phenikaa University, Yen Nghia, Ha-Dong District, Hanoi, 10000, Vietnam |
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Received: March 4, 2025; Revised: April 29, 2025 Accepted: May 25, 2025. Published online: June 30, 2025. |
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| ABSTRACT |
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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. |
| Key words:
Solid electrolyte · LATP · NASICON structure · MoO3 |
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