E-r-pH and E-r-m(KOH) diagrams for nickel at 25 degrees C

被引：3

作者：

Balej, J ^{[1
]}

Divisek, J ^{[1
]}

机构：

[1] KFA JULICH,RES CTR,D-52425 JULICH,GERMANY

来源：

COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS | 1997年 / 62卷 / 05期

关键词：

nickel oxide electrodes; E-r-pH diagram; E-r-m(KOH) diagram;

D O I：

10.1135/cccc19970696

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Based on the conclusion that no Ni(III) oxo compounds can exist in oxidized nickel oxide electrodes with the total oxidation number 2.0 < z(Ni) < approx. 3.6 and that non-ideal solid solutions with a formal composition (1 -X-2) Ni(OH)(2) . X-2 NiO2 . x H2O Me are involved, E-r-pH and E-r-m(KOH) diagrams at 25 degrees C were calculated and graphically represented using the thermodynamic standard data determined for hypothetical NiO2 . x H2O. The calculations were performed assuming alpha H2O = 1 in the en tire pH range (E-r-pH diagram) and considering the true water activity in KOH sol;lions of various concentrations (E-r-m(KOH) diagram).

引用

页码：696 / 708

页数：13

共 46 条

[1]

Arvia A. J., 1975, ENCY ELECTROCHEMISTR, VIII, P211

[2] WATER-VAPOR PARTIAL PRESSURES AND WATER ACTIVITIES IN POTASSIUM AND SODIUM-HYDROXIDE SOLUTIONS OVER WIDE CONCENTRATION AND TEMPERATURE RANGES [J].