Improvement of Ambient Stability and Conductivity of Amorphous Li–La–Zr–O–F Solid Electrolyte through Diversified Utilization of LiF
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Le résumé fourni par la source
High Resolution Image Download MS PowerPoint Slide The primary challenge in the development of solid-state electrolytes (SSEs) lies in achieving competitive ionic conductivity with liquid-based electrolytes, while retaining their inherent advantages. Among various SSEs, garnet-type oxide Li 7 La 3 Zr 2 O 12 (LLZO) stands out due to its high ionic conductivity (∼10 –4 S/cm) and chemical/electrochemical stability against Li metal, making it a promising candidate. However, polycrystalline cubic-LLZO, possessing a large grain-boundary volume, easily suffers from the fatal flaws of Li-dendrite penetration and battery short circuits. Furthermore, conventional high-temperature sintering conditions (>1000 °C) lead to lithium loss, which often requires a material-wasting approach, such as using a sacrificial mother powder batch, to compensate. Importantly, LLZO is sensitive to H 2 O and CO 2 in ambient conditions, which leads to the thickening of Li 2 CO 3, increasing interfacial resistance between the electrode and LLZO. Here, we propose an amorphous Li–La–Zr–O–F thin film to tackle these two issues of Li loss and Li 2 CO 3 formation. Significantly, LiF serves multiple roles: it provides supplemental Li, acts as an F dopant after post-annealing, and functions as a protective layer against Li 2 CO 3 submersion inside LLZO. Our perspective offers an innovative strategy to address the issues of Li 2 CO 3 formation and Li loss while simultaneously achieving a significant improvement in ionic conductivity, which can be extended to other oxide-based SSEs.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Improvement of Ambient Stability and Conductivity of Amorphous Li–La–Zr–O–F Solid Electrolyte through Diversified Utilization of LiF
- Date Crossref
- 22/07/2025
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Maryland pays non établi dans la noticeUniversité ou école supérieure
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National Cheng Kung University Department of Materials Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
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Department of Materials Science & Engineering pays non établi dans la noticeInstitution
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Department of Materials Science and Engineering pays non établi dans la noticeInstitution
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Maryland Energy Innovation Institute pays non établi dans la noticeStructure de recherche
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Department of Chemical and Biomolecular & Engineering pays non établi dans la noticeInstitution
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Hierarchical Green-Energy Materials (Hi-GEM) Research Center pays non établi dans la noticeStructure de recherche
University of Maryland, Department of Materials Science and Engineering — National Cheng Kung University et Department of Materials Science & Engineering, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.