OXYGEN REDUCTION ON Cu1 ,Mn16O4 SPINEL PARTICLES COMPOSITE ELECTRODES EFFECT OF PARTICLES SIZE

• DOI: 10.4067/s0717-97072014000200023
• Publication Date: 2014-09-02T15:11:09Z
• Authors: ANDRES ESPEJO; JUAN ORTIZ; EDMUNDO RIOS; FRANCISCO HERRERA; DANIELA ALBURQUENQUE; JUANLUIS GAUTIER
• Keywords: Polypyrrole

The oxygen reduction reaction (orr) was studied on CG/PPy/PPy(Ox)/PPy and CG/paint/CC(Ox)PPy composite electrodes, CG representing conducting glass, PPy polypyrrole, CC carbon cloth Ox mixed valence spinel oxide particles of transition metals Cu 1.4 Mn 1.6 O 4 in 0.2 M KCl pH = 9.2, at room temperature.PPy is electrochemically polymerized serves as a protective layer to dispersed the cloth.Oxide size varied from 7.6 11.2 µm.The orr takes place with formation hydrogen peroxide which diffuses electrolyte solution.The amount ions produced detected using rotating ring-disk electrode technique determined indirectly by iodine spectroscopy.The production depends strongly particle size.