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应用钠β氧化铝管作固体电解质隔膜,测定了钠/钠汞齐电池:Na|Na~+-β-Al_2O_3|Na_xHg_(1-x)(x:0.035～0.25,固+液,两相区)的电动势与温度的依从关系。研究表明,液、固两相共存的钠汞齐电池有大的负温度系数。在(-30～320)℃之间,其温度系数变化为(0.8～2.5)mV/K。温度恒定时,电池电动势有很好的稳定性。因此,该电池可作为微差温度传感器,测量微小的温度变化,灵敏度达(0.1～0.04)mK。
The sodium / beta-alumina tube was used as the separator for the solid electrolyte. The sodium / sodium amalgam batteries were tested for Na ~ Na ~ + ~ β-Al_2O_3 | Na_xHg_ (1-x) ) The emf and temperature compliance. Studies have shown that liquid-solid two-phase coexistence of sodium amalgam batteries have a large negative temperature coefficient. (-30 ~ 320) ℃, the temperature coefficient changes (0.8 ~ 2.5) mV / K. When the temperature is constant, the battery electromotive force has good stability. Therefore, the battery can be used as a differential temperature sensor, measuring small temperature changes, the sensitivity of (0.1 ~ 0.04) mK.