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以固相反应法合成了Ｎａ＿２ＳＯ＿４－Ｌｎ＿２（ＳＯ＿４）＿３（Ｌｍ＝Ｌａ，Ｙ）和Ｎａ＿２ＳＯ＿４＿—Ｌａ＿２（ＳＯ＿４）＿３—Ｎａ２ＷＯ４体系固体电解质，以ＸＲＤ和热分析研究了物相与化学组成的关系，以交流阻抗谱研究了材料的电导率。发现Ｌａ摩尔含量大于６％或Ｙ含量大于１２％时，可使高电导的Ｎａ＿２ＳＯ＿４（Ⅰ）相稳定到室温。而１．ａ为４％或Ｙ为５％时，体系具有最高的电导率，比纯Ｎａ＿２ＳＯ＿４约高２个数量级。此时高、低温度段的电导活化能分别为０．３８ｅＶ和０．８２ｅＶ。在Ｎａ＿２ＳＯ＿４＋４％１Ｌａ＿２（ＳＯ＿４）＿３二元系中掺入ＷＯ＿４后，出现一具有四方ＣａＷＯ＿４结构的未知新相，其电导率不高，但它的存在改善了试样的烧结性和致密度，这可能与此固溶体中和的相互作用有关。
The solid electrolytes of Na_2SO_4-Ln_2 (SO_4) _3 (Lm = La, Y) and Na_2SO_4_-La_2 (SO_4) _3-Na2WO4 were synthesized by solid state reaction. The relationship between phase and chemical composition was studied by XRD and thermal analysis. The conductivity of the material was investigated by AC impedance spectroscopy. When La molar content is more than 6% or Y content is more than 12%, the highly conductive Na_2SO_4 phase can be stabilized to room temperature. And 1 When a is 4% or Y is 5%, the system has the highest conductivity, about two orders of magnitude higher than pure Na_2SO_4. At this time, the conductance activation energies of high and low temperature sections are 0.38eV and 0.82eV, respectively. After the incorporation of WO_4 into Na_2SO_4 + 4% 1La_2 (SO_4) __3 binary system, an unknown new phase with tetragonal CaWO_4 structure appears, its conductivity is not high but its existence improves the sinterability and density of the sample It may be related to the solid solution neutralization interaction.