Improving ionic conductivity of von-Alpen-type NASICON ceramic electrolytes via magnesium doping
نویسندگان
چکیده
NASICON (sodium (Na) superionic conductor) compounds have attracted considerable attention as promising solid electrolyte materials for advanced Na-based batteries. In this study, we investigated the improvement in ionic conductivities of von-Alpen-type (vA-NASICON) ceramic electrolytes by introducing a magnesium ion (Mg2+) heterogeneous element. The optimal Mg-doped vA-NASICON exhibited high conductivity 3.64×10−3 S·cm−1, which was almost 80% higher than that un-doped vA-NASICON. changes physicochemical properties vA-NASICONs through Mg introduction were systematically analyzed, and their effects on studied detail. When ratio Mg2+ used synthetic process, relative density (96.6%) grain boundary (σgb) maximized, improved total (σt) However, when introduced excess, decreased because formation an undesired sodium phosphate (NaxMgyPO4) secondary phase. results study are expected to be effectively applied development sodium-based with conductivities.
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ژورنال
عنوان ژورنال: Journal of Advanced Ceramics
سال: 2023
ISSN: ['2227-8508', '2226-4108']
DOI: https://doi.org/10.26599/jac.2023.9220738