稳定的δ-Bi2O3中增强的氧离子导电性。
Enhanced oxide ion conductivity in stabilized delta-Bi2O3.
作者信息
Punn Rita, Feteira Antonio M, Sinclair Derek C, Greaves Colin
机构信息
School of Chemistry, The University of Birmingham, Edgbaston, Birmingham, UK.
出版信息
J Am Chem Soc. 2006 Dec 6;128(48):15386-7. doi: 10.1021/ja065961d.
The substitution of Re into Bi2O3 allows stabilization of the delta-Bi2O3 structure by additional substitution of any lanthanide ion to give, for example, phases of composition Bi12.5La1.5ReO24.5. Some of these phases have been found to show exceptionally high oxide ion conductivity at low temperatures, ca 10-3 S cm-1 at 300 degrees C. The phases show a significant structural difference from other delta-Bi2O3 phases previously reported, with interstitial anion sites displaced further from the ideal fluorite position, (1/4,1/4,1/4).
将铼（Re）引入Bi₂O₃中，通过额外引入任何镧系离子可使δ-Bi₂O₃结构得以稳定，从而得到例如组成为Bi₁₂.₅La₁.₅ReO₂₄.₅的相。已发现其中一些相在低温下表现出异常高的氧化物离子电导率，在300℃时约为10⁻³ S cm⁻¹。这些相与先前报道的其他δ-Bi₂O₃相相比，结构上存在显著差异，间隙阴离子位点偏离理想萤石位置（1/4,1/4,1/4）更远。
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