TY - GEN
T1 - Electrochemical nucleation of zinc onto glassy carbon
AU - Plata-Torres, M.
AU - Olvera-Vázquez, S. L.
AU - Ramírez-Rodríguez, C.
AU - Dorantes-Rosales, H. J.
AU - Arce-Estrada, E. M.
PY - 2006
Y1 - 2006
N2 - Metal electrodeposition onto diverse substrates continues to be a subject of significant interest more specifically for improved corrosion properties (coatings) and the production of integrated circuits. Among the metallic coatings used to protect steel surfaces, electrodeposited zinc and zinc alloys are important in both, decorative and industrial applications. Unfortunately, in the common electrolytic baths (sulfates, acetates, chlorides); Zn electrodeposition is accompanied by the hydrogen evolution reaction (HER), which causes a competition between both processes. Therefore, in such circumstances, a quantitative evaluation of the kinetic parameters of the zinc electrocrystallization process is almost impossible. In this work, Zn electrodeposition was analyzed using a non-conventional support electrolyte as alternative method to separate the involved processes. Zn electrodeposition onto glassy carbon (GC) was investigated using cyclic voltammetry (CV) and potential step techniques in an aqueous solution 10-2 M ZnCl2, in 1M NH4Cl. The experimental current density transients showed that the mechanism of zinc electrodeposition in IM NH4Cl occurs by multiple, progressive three-dimensional nucleation with controlled by mass transfer. copyright The Electrochemical Society.
AB - Metal electrodeposition onto diverse substrates continues to be a subject of significant interest more specifically for improved corrosion properties (coatings) and the production of integrated circuits. Among the metallic coatings used to protect steel surfaces, electrodeposited zinc and zinc alloys are important in both, decorative and industrial applications. Unfortunately, in the common electrolytic baths (sulfates, acetates, chlorides); Zn electrodeposition is accompanied by the hydrogen evolution reaction (HER), which causes a competition between both processes. Therefore, in such circumstances, a quantitative evaluation of the kinetic parameters of the zinc electrocrystallization process is almost impossible. In this work, Zn electrodeposition was analyzed using a non-conventional support electrolyte as alternative method to separate the involved processes. Zn electrodeposition onto glassy carbon (GC) was investigated using cyclic voltammetry (CV) and potential step techniques in an aqueous solution 10-2 M ZnCl2, in 1M NH4Cl. The experimental current density transients showed that the mechanism of zinc electrodeposition in IM NH4Cl occurs by multiple, progressive three-dimensional nucleation with controlled by mass transfer. copyright The Electrochemical Society.
UR - http://www.scopus.com/inward/record.url?scp=45749088140&partnerID=8YFLogxK
U2 - 10.1149/1.2721514
DO - 10.1149/1.2721514
M3 - Contribución a la conferencia
AN - SCOPUS:45749088140
SN - 9781604233742
T3 - ECS Transactions
SP - 25
EP - 33
BT - ECS Transactions - Electrochemical Deposition on Non-Metallic Surfaces, Patterned Substrates, and Templates
PB - Electrochemical Society Inc.
T2 - Electrochemical Deposition on Non-Metallic Surfaces, Patterned Substrates, and Templates - 210th ECS Meeting
Y2 - 29 October 2006 through 3 November 2006
ER -