TY - JOUR
T1 - Nickel and cobalt bimetallic hydroxide catalysts for urea electro-oxidation
AU - Yan, Wei
AU - Wang, Dan
AU - Botte, Gerardine G.
N1 - Funding Information:
The authors would like to thank the financial support of the Center for Electrochemical Engineering Research at Ohio University , and the Department of Defense through the U.S. Army Construction Engineering Research Laboratory ( W9132T-09-1-0001 ). The content of the information does not reflect the position or the policy of the U.S. government.
PY - 2012/2/1
Y1 - 2012/2/1
N2 - Nickel-Cobalt bimetallic hydroxide electrocatalysts, synthesized through a one-step electrodeposition method, were evaluated for the oxidation of urea in alkaline conditions with the intention of reducing the oxidation overpotential for this reaction. The Nickel-Cobalt bimetallic hydroxide catalysts were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS), Raman spectroscopy, cyclic voltammetry (CV), and polarization techniques. A significant reduction in the overpotential (150 mV) of the reaction was observed with the Nickel-Cobalt bimetallic hydroxide electrode (ca. 43% Co content) when compared to a nickel hydroxide electrode. The decrease of the urea oxidation potential on the Nickel-Cobalt bimetallic hydroxide electrodes reveals great potential for future applications of urea electro-oxidation, including wastewater remediation, hydrogen production, sensors, and fuel cells.
AB - Nickel-Cobalt bimetallic hydroxide electrocatalysts, synthesized through a one-step electrodeposition method, were evaluated for the oxidation of urea in alkaline conditions with the intention of reducing the oxidation overpotential for this reaction. The Nickel-Cobalt bimetallic hydroxide catalysts were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS), Raman spectroscopy, cyclic voltammetry (CV), and polarization techniques. A significant reduction in the overpotential (150 mV) of the reaction was observed with the Nickel-Cobalt bimetallic hydroxide electrode (ca. 43% Co content) when compared to a nickel hydroxide electrode. The decrease of the urea oxidation potential on the Nickel-Cobalt bimetallic hydroxide electrodes reveals great potential for future applications of urea electro-oxidation, including wastewater remediation, hydrogen production, sensors, and fuel cells.
KW - Alkaline electrolysis
KW - Hydrogen production
KW - Nickel-Cobalt bimetallic hydroxide catalyst
KW - Urea electro-oxidation
UR - http://www.scopus.com/inward/record.url?scp=84855305028&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2011.11.044
DO - 10.1016/j.electacta.2011.11.044
M3 - Article
AN - SCOPUS:84855305028
SN - 0013-4686
VL - 61
SP - 25
EP - 30
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -