Abstract Na3Zr2(SiO4)2(PO4), a typical solid-state electrolyte material, was fabricated at 700°C within seconds by flash-sintering. Under a direct-current electric field, the sodium oxides deposited on the cathode side due to the electrochemical reactions and thereby resulting in impurities (Na2ZrSi2O7 and m-ZrO2) within the bulks. The pure Na3Zr2(SiO4)2(PO4) bulks without the impurities could be sintered under alternative- current electric field, which exhibited comparable ion conductivity and activation energy to the reported data. This study demonstrated that flash-sintering can be used to synthesize and densify ceramics containing volatile composites. It may provide a new route to fabricate solid-state electrolytes in an efficient way.

中文翻译：

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Na3Zr2(SiO4)2(PO4)固态电解质在700°C炉温下的快速烧结

摘要 Na3Zr2(SiO4)2(PO4) 是一种典型的固态电解质材料，是在 700°C 下通过快速烧结在几秒钟内制成的。在直流电场下，氧化钠由于电化学反应而沉积在阴极侧，从而在块体内产生杂质（Na2ZrSi2O7 和 m-ZrO2）。不含杂质的纯 Na3Zr2(SiO4)2(PO4) 块体可以在交流电场下烧结，其表现出与报道数据相当的离子电导率和活化能。该研究表明，快速烧结可用于合成和致密化含有挥发性复合材料的陶瓷。它可能提供一种以有效方式制造固态电解质的新途径。