TY - JOUR
T1 - Oxygen reduction kinetics of ball-milling synthesis Pd electrocatalysts in acid medium
AU - Solorza-Feria, O.
AU - Collins-Martinez, V.
AU - Gonzalez-Huerta, R. G.
AU - Lopez-Ortiz, A.
AU - Delgado-Vigil, D.
PY - 2009/4
Y1 - 2009/4
N2 - Pd, PdSe and PdNi electrocatalyst were synthesized through the ball-milling technique and their catalytic activity evaluated for the oxygen reduction reaction (ORR) in acid medium. These compounds were characterized by mean of transmission electron microscopy (TEM) and X ray diffraction (XRD). TEM images showed highly uniform agglomerates of nanometric size particles. Electrochemical studies, for these compounds supported on carbon Vulcan and dispersed in a Nafion film, were achieved through rotating disc electrode (RDE) technique. Kinetics results in all compounds were a first order reaction with four electrons transfer mechanism to water formation. The incorporation of selenium to palladium catalyst produced a decreased in the catalytic activity, while the addition of Ni favored the cathodic reaction, generating the lowest overpotential (0.36V) of all studied materials at 1 mAcm -2.
AB - Pd, PdSe and PdNi electrocatalyst were synthesized through the ball-milling technique and their catalytic activity evaluated for the oxygen reduction reaction (ORR) in acid medium. These compounds were characterized by mean of transmission electron microscopy (TEM) and X ray diffraction (XRD). TEM images showed highly uniform agglomerates of nanometric size particles. Electrochemical studies, for these compounds supported on carbon Vulcan and dispersed in a Nafion film, were achieved through rotating disc electrode (RDE) technique. Kinetics results in all compounds were a first order reaction with four electrons transfer mechanism to water formation. The incorporation of selenium to palladium catalyst produced a decreased in the catalytic activity, while the addition of Ni favored the cathodic reaction, generating the lowest overpotential (0.36V) of all studied materials at 1 mAcm -2.
KW - Mechanical milling
KW - Oxygen reduction electrocatalysis
KW - Pd base nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=70449378005&partnerID=8YFLogxK
M3 - Artículo
SN - 1480-2422
VL - 12
SP - 63
EP - 67
JO - Journal of New Materials for Electrochemical Systems
JF - Journal of New Materials for Electrochemical Systems
IS - 2-3
ER -