材料科学
快离子导体
拉曼光谱
离子电导率
电解质
分析化学(期刊)
扫描电子显微镜
相(物质)
杂质
电导率
傅里叶变换红外光谱
介电谱
固溶体
离子键合
化学计量学
电阻率和电导率
离子
化学工程
物理化学
化学
电化学
色谱法
电极
复合材料
有机化学
光学
物理
工程类
电气工程
冶金
作者
Ademola J. Adetona,Ge Wang,Brant Walkley,Derek C. Sinclair,Ian M. Reaney
标识
DOI:10.1016/j.jeurceramsoc.2023.12.071
摘要
Na3Zr2Si2P2O12 (NZSP) has potential use as a solid electrolyte in Na-ion solid-state batteries due to its high ionic conductivity (10-3–10-4 Scm-1) at room temperature. It is established that all previous preparations involving the solid-state method for NZSP compositions contain m-ZrO2 as a secondary phase. Here, the solid-state method is used to prepare single-phase NZSP by modifying the mole fractions of the ZrO2 reactant. Reducing ZrO2 concentration may also create Zr and O vacancies and potentially increase the hopping sites for Na-ion conduction. X-ray diffraction, scanning electron microscopy, Raman and Fourier Transform Infrared spectroscopy, dilatometry and impedance spectroscopy were used to characterise the structure, morphology and electrical properties of single-phase NZSP, and the results were compared with samples that have m-ZrO2 secondary phase (Na3Zr2Si2PO12). The role of m-ZrO2 impurities on the conductivity of NZSP is investigated and compared with available literature.
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