采用以聚乙烯醇为聚合剂的湿化学法合成Li1.3Al0.3Ti1.7(PO4)3(LATP)锂离子导电材料,以Li4P2O7 (LP)为助烧剂制备LATP-xLP (x=0,0.01,0.03,0.05,摩尔分数)锂离子导电固体电解质材料.利用X射线衍射、扫描电子显微镜和交流阻抗技术分别对材料的相组成、微观组织和离子导电性进行表征.通过分析材料晶体结构和交流阻抗特性,对材料的导电机理进行研究.结果表明:LATP粉体和LATP-xLP陶瓷具有菱方晶系结构,空间群为R3-c,该晶体结构具有三维离子导电通道；添加LP助烧剂使陶瓷的烧结温度降低了150℃、电导率得到了提高.交流、直流导电特性测量得出LATP-0.03LP的离子导电性占总导电性的99.5％.
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