KINETICS OF AQUEOUS POLYSULFIDE SOLUTIONS .2. ELECTROCHEMICAL MEASUREMENT OF THE RATES OF COUPLED ELECTROCHEMICAL AND CHEMICAL-REACTIONS BY THE POTENTIAL STEP METHOD

被引：35

作者：

LESSNER, P ^{[1
]}

WINNICK, J ^{[1
]}

MCLARNON, FR ^{[1
]}

CAIRNS, EJ ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,DEPT CHEM ENGN,BERKELEY,CA 94720

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1986年 / 133卷 / 12期

关键词：

CHEMICAL REACTIONS - Reaction Kinetics - ELECTRIC BATTERIES - Components - ELECTROCHEMISTRY - Measurements - ELECTRODES - Platinum - ELECTROLYTES - Composition Effects;

D O I：

10.1149/1.2108463

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The kinetics of the aqueous polysulfide redox couple were investigated using a potential step technique in a solution 1M in S**0 and 1. 3M in total S**2** minus , at pH 12. The low overpotential region ( minus 20 to plus 20 mV) on cobalt and platinum electrodes was investigated from 25 degree to 80 degree C. The active species concentration was found to be several orders of magnitude lower than those of any of the major (poly)sulfide ions, and its temperature dependence corresponded to an E//a of about 10 kcal/mol. These results are consistent, with the active species being S//2** minus . This work is pertinent to electric batteries.

引用

页码：2517 / 2522

页数：6

共 36 条

[1] ELECTROCHEMISTRY OF SULPHUR .1. OVERPOTENTIAL IN THE DISCHARGE OF THE SULPHIDE ION [J].