【摘要】 以Na₃PO₄、ZrP₂O₇、SiO₂、ZrO₂、TiO₂为反应原料,在1173K—1473K的高温下进行固相反应,制备了钠快离子导体Na_1+xZr_2-yTi_ySi_xP_3-xO₁₂系统中x=1、y=0—2.0的一系列合成物。研究了它们的相变关系;测定了两个单纯相—211相和202相的电导率和电导激活能。 室温时,211相的电导率σ_RT=1.52×10^-4（Ω·cm）^-1,202相的σ_TR=0.53×10^-4（Ω·cm）^-1;623K时,211相的电导率σ₆₂₃=1.21×10^-1（Ω·cm）^-1,202相的σ₆₂₃=0.88×10^-2（Ω·cm）^-1。 在523K～673K温区里,211相的电导激活能E_a为31.87kJ/mole,202相的E_a为33.16kJ/mole。更多还原

【Abstract】 NASICON type fast ion conductors of Na1+xZr2-yTiySixP3-xO12 were synthesized and formed mixtures of Na3PO4-ZrP2O7-SiO2-ZrO2-TiO2 in platinum vessel at temperature of 1173K - 1473K for several hours to 20 hours(40 hours for a few of samples). A single pure phase (labelled phase 211) was found in the x=1.0, y=1.0. A second pure phase (labelled phase 202) was found with x= 1.0, y = 2?. The conductivities and activation energies of both phase 211 and phase 202 were measured.At room temperature, the conductivities of phase 211 and phase 202 are 1.52×10-4(Ω cm)-1 and 0.53 × 10-4(Ω cm)-1. At 623K, the conductivities of both phase 211 and phase 202 are 1.21 × 10-1 (Ω cm)-1 and 0.88 × 10-2(Ω cm)-1. The activation energies of both phase 211 and phase 202 are 31.87kJ/mole and 33.16kJ/mole at temperature range 523K-773K.更多还原