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采用微波技术合成了固体氧化物燃料电池阴极材料La1-xSrxMnO3样品,分别选择x=0.1,0.2,0.3,0.4和0.5合成了La0.9 Sr0.1 MnO3,La0.8 Sr0.2 MnO3,La0.7 Sr0.3 MnO3,La0.6 Sr0.4MnO3和La0.5Sr0.5MnO3.用X射线衍射分析检测了样品的结构与组成,用电子扫描电镜考查了样品的形貌和粒度.电导率测量结果表明,样品的组成和烧结温度影响电导率.在系列样品中,组成为La0.7Sr0.3MnO3电导率最高;烧结温度1200℃和1300℃相比较,1300℃烧结后样品的电导率大幅度提高.

参考文献

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