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固体金属镉电极和饱和镉汞齐电极的标准电极势,Harned等已有过综合性的评述.两年前我们从饱和硫酸镉标准电池在298K的电动势测定值出发,用热力学方法计算得饱和镉汞齐电极和固体金属镉电极的标准电极势值分别为-0.35215绝对伏和-0.40264绝对伏.这数值同Treumann的测算值(E_(Cd~(2+)/Cd-Hg)~0(两相)=-0.3521绝对伏和E_(Cd~(2+)/Cd)~0(固)=-0.4026绝对伏)是一致的.
Standard Electrode Potential for Solid Metal Cadmium Electrodes and Saturable Cadmium Amalgam Electrodes, Harned et al., Reviewed two years ago, starting from the measured electromotive force of a saturated cadmium sulfate cadmium battery at 298 K, calculated thermodynamically using saturated cadmium The standard electrode potentials of the amalgam electrode and the solid metal cadmium electrode are respectively -0.35215 volt and -0.40264 volt absolute, which is the same as that of Treumann (E_ (Cd_ (2 +) / Cd_Hg) ~ 0 = 0.3521 absolute volts and E_ (Cd ~ (2 +) / Cd) ~ 0 (solid) = -0.4026 absolute volts) is consistent.