REAL ELECTRODE SURFACE-AREA BY ZN2+ ADSORPTION AND ELECTROCATALYTICAL REACTIVITY FOR THE OXYGEN REDUCTION REACTION - COMPARISON OF THE ELECTROCATALYTICAL REACTIVITY OF PURE AND COMPOSITE SPINEL OXIDE CU1+XMN2-XO4(O-LESS-THAN-X-LESS-THAN-0.4) ELECTRODES

被引：10

作者：

RESTOVIC, A ^{[1
]}

POILLERAT, G ^{[1
]}

CHARTIER, P ^{[1
]}

GAUTIER, JL ^{[1
]}

机构：

[1] UNIV STRASBOURG 1,FAC CHIM,ELECTROCHIM & CHIM PHYS CORPS SOLIDE LAB,CNRS,U 405,F-67008 STRASBOURG,FRANCE

来源：

ELECTROCHIMICA ACTA | 1995年 / 40卷 / 16期

关键词：

REAL SURFACE AREA; OXIDE ELECTRODE; SPINEL; COPPER MANGANITES; THIN FILM; TEFLON-BONDED ELECTRODE; ZINC ADSORPTION; OXYGEN REDUCTION REACTION;

D O I：

10.1016/0013-4686(95)00240-F

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Zn2+ adsorption was used to determine the electrochemically active surface area (EASA) of spray pyrolized (SP) film electrodes and of powders prepared by decomposition of metal salts (DMS) in composite graphite and teflon bonded electrodes of spinel oxide Cu1+xMn2-xO4 (0 < x < 0.4) (DMSGT). It is shown that both SP and DMS materials are nanosized with particle diameters in the range 50-80 Angstrom and EASAs per unit loading mass M (EASAM) 1300-2200 cm(2) mg(-1). The lesser intrinsic reactivity in the case of DMSGT electrodes is attributed to modification of the surface reactivity of pure oxide particles in contact with graphite and teflon.

引用

页码：2669 / 2674

页数：6

共 18 条

[1] RING-DISK ELECTRODE STUDY OF REDUCTION OF OXYGEN ON ACTIVE-CARBON IN ALKALINE-SOLUTION [J].