Authors
Yi Liang, Qian Zhao, Jiali Zhang, Xuchang Tang, Jiaxi Bai, Min Zhong, Wenzhuo Shen, Shouwu Guo
Published in
ACS applied materials & interfaces. Jun 25, 2026. Epub Jun 25, 2026.
Abstract
Li1.3Al0.3Ti1.7(PO4)3, as one of the superionic conductors, has been frequently used as a solid electrolyte alone or as a functional additivity in the organic/inorganic composite solid-state electrolytes. However, the surface Ti4+ ions of Li1.3Al0.3Ti1.7(PO4)3 can be electrochemically reduced by lithium foil, which largely hinders the practical application of Li1.3Al0.3Ti1.7(PO4)3. In the work, Li1.3Al0.3Ti1.7(PO4)3 nanoparticles are first coated with reduced graphene oxide sheets, and then blended in poly(ethylene oxide) together with lithium bis((trifluoromethyl)sulfonyl)azanide in the presence of acetonitrile. The suspension is cast within the electrospun polyacrylonitrile nanofiber film by solution casting getting a series of organic/inorganic composite solid electrolytes. The as-coated reduced graphene oxide sheets can serve as a protective barrier to prevent the adverse interface reaction of Li1.3Al0.3Ti1.7(PO4)3 with lithium, suppressing mainly the Ti4+ reduction by lithium, and boosting interface stability. The composite solid electrolytes exhibit a satisfactory ionic conductivity of 6.02 × 10-5 S cm-1 at 25 °C, and a stable lithium stripping/plating over 1000 h. All solid-state batteries assembled with the as-prepared electrolytes show remarkable rate performance and cycling stability at 25 °C without external pressure.
PMID:
42348271
Bibliographic data and abstract were imported from PubMed on 25 Jun 2026.
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