KINETICS OF OXYGEN-ELECTRODE REACTION IN MOLTEN CHLORIDE

被引：3

作者：

NUMATA, H ^{[1
]}

MOMMA, A ^{[1
]}

ASAKO, K ^{[1
]}

HARUYAMA, S ^{[1
]}

机构：

[1] SRI INT, MENLO PK, CA 94025 USA

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS | 1988年 / 52卷 / 03期

关键词：

GOLD AND ALLOYS - Electrochemistry - PALLADIUM AND ALLOYS - Electrochemistry - PLATINUM AND ALLOYS - Electrochemistry;

D O I：

10.2320/jinstmet1952.52.3_295

中图分类号：

学科分类号：

摘要：

The kinetics of the O**2** minus /1/2O//2 on Pt, Au and Pd electrodes in a NaCl-KCl melt at 1023 K have been studied with the galvanostatic double pulse and a. c. impedance methods. The cathodic polarization curves on these electrodes under different partial pressures of oxygen exhibited a diffusion limited current. The cathodic reduction of oxygen proceeds via a two-step mechanism. The rate of the rapid charge transfer step measured with the galvanostatic double pulse method was on the order of 10**4 A multiplied by (times) m** minus **2. A. Cole-Cole plot of the impedance of the oxygen electrode exhibited a semicircle at high frequencies and a Warburg behavior at low frequencies. The exchange current obtained from the diameter of the semicircle was two orders of magnitude less than that obtained from the galvanostatic double pulse method and probably corresponds to that of the slower reaction step.

引用

页码：295 / 302

页数：8

共 15 条

[1] MECHANISM OF ELECTROCHEMICAL EXCHANGE OF NI-NI(II) SYSTEMS IN FUSED LICL-KCL EUTECTIC [J].