ELECTROCHEMICAL CHARACTERIZATION AND MORPHOLOGICAL-STUDIES OF PALLADIUM-MODIFIED CARBON CERAMIC ELECTRODES

被引：32

作者：

GUN, J

TSIONSKY, M

RABINOVICH, L

GOLAN, Y

RUBINSTEIN, I

LEV, O

机构：

[1] HEBREW UNIV JERUSALEM,FREDY NADINE HERRMANN SCH APPL SCI,DIV EXPTL SCI,IL-91904 JERUSALEM,ISRAEL

[2] WEIZMANN INST SCI,DEPT MAT & INTERFACES,IL-76100 REHOVOT,ISRAEL

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1995年 / 395卷 / 1-2期

关键词：

MODIFIED ELECTRODES; CARBON CERAMIC COMPOSITES; MORPHOLOGY SURFACE STRUCTURE; ELECTROCHEMICALLY ACTIVE LAYER;

D O I：

10.1016/0022-0728(95)03984-O

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Palladium-modified carbon ceramic composite gas electrodes (Pd/CCE) are presented and characterized. The electrodes are comprised of graphite powder percolating through hydrophobically modified silica xerogels. The electrodes were prepared by mixing Pd salt and carbon powder with the sol-gel precursors and reduction of palladium ions after xerogel formation. The morphology and surface characteristics of the composite materials were examined by electron microscopy, X-ray microanalysis, nitrogen adsorption and water wetting angle measurements. Oxygen reduction was used as a model reaction to probe the characteristics of the wetted section of the Pd/CCEs. Voltammetric studies and polarization curves were employed to elucidate the size and structure of the active layer as a function of palladium content.

引用

页码：57 / 66

页数：10

共 33 条

[1] OXYGEN REDUCTION AND CORROSION KINETICS ON PHASE-OXIDE-FREE PALLADIUM AND SILVER ELECTRODES AS A FUNCTION OF TEMPERATURE IN 85 PERCENT ORTHOPHOSPHORIC ACID [J].