Techniques for Characterizing Porous Electrodes

被引：32

作者：

Tilak, B. V. ^{[1
]}

Rader, C. G. ^{[1
]}

Rangarajan, S. K. ^{[2
]}

机构：

[1] Hooker Chem & Plast Corp, Res Ctr, Grand Isl, NY 14072 USA

[2] Indian Inst Sci, Dept Inorgan & Phys Chem, Bangalore 560012, Karnataka, India

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1977年 / 124卷 / 12期

关键词：

double layer capacity; porous electrodes; exponential relaxation technique; Ni plaque; Cl-2; evolution;

D O I：

10.1149/1.2133179

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Two relaxation techniques are examined for determining the double layer capacity of porous electrodes of finite length. In the presence of a faradaic reaction, under near equilibrium conditions, analytical expressions are derived for the transient potential response to current perturbations of the form i(t) = Delta i exp (-t/tau) and i(t) = Delta i(1 - t/tau). The ease with which the system parameters (R-T and C-T) can be deduced by employing these two techniques is analyzed. Experimental support for the exponential relaxation technique is provided by examining three electrochemical systems: sintered nickel plaque/NaOH; Teflon-bonded Pt on Pt screen/NaOH; and TiO2 + RuO2 coatings on Ti/NaCl aq.

引用

页码：1879 / 1886

页数：8