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应用Na|Na+ β Al2 O3|NaxPb1-x固体电解质电池测定了 42个Na/NaxPb1-x(x =0 .0 43～ 0 .9878)电池在 5 0 8～ 6 48K的电动势。计算了钠 /高铅钠合金 (液 ,x =0 .0 43～ 0 .6 )电池电动势及其温度系数 ,钠在合金中的活度系数、偏摩尔熵 S(Na)、偏摩尔焓 H(Na)和x(Na)的关系。热力学函数对钠摩尔分数的线性关系 ,相应于在钠铅相图中的富铅相界、共晶体NaPb4 ,NaPb NaPb3 和化合物NaPb组分处产生的偏折 ,表征液态钠铅合金存在着类似于固相结构的化学络合物。根据电池电动势对组分和温度的关系 ,测量了合金的熔化温度及NaPb4 ,NaPb NaPb3,NaPb Na9Pb4 的共晶温度
The electromotive forces of 42 Na / NaxPb1-x (x = 0.043 ~ 0.9878) batteries at 580 ~ 648K were measured with Na | Na + |ÁBeta2O3 | NaxPb1-x solid electrolyte cells. The electromotive force and its temperature coefficient of sodium / lead-sodium alloy (liquid, x = 0.043 ~ 0.6), the activity coefficient of sodium in the alloy, partial molar entropy S (Na), partial molar enthalpy H (Na) and x (Na). The linear relationship of the thermodynamic function to the sodium mole fraction corresponds to the deflection generated at the lead-rich phase boundary in the sodium-lead phase diagram, the eutectic NaPb4, NaPb NaPb3 and the compound NaPb component, characterizing the presence of Solid phase chemical complexes. According to the relationship between the electromotive force of the battery and the temperature, the melting temperature of the alloy and the eutectic temperature of NaPb4, NaPb NaPb3 and NaPb Na9Pb4