采用固相反应法制备了氧离子导体La2MO2-yAlyO9-δ(y=0、0.1、0.2、0.3)陶瓷样品.用XRD表征了其晶体结构,并用交流阻抗谱方法研究了样品在还原气氛中(5%Hz/Ar)的化学稳定性.结果表明,La2Mo1.9Al0.1-O9-δ样品在还原气氛中的化学稳定性最好,当Al的掺杂量达到10%(y=0.2)时,样品就会被分解,同时化学稳定性能降低.
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