ChemInform Abstract: XPS Study and Electrochemical Behavior of the Nickel Hexacyanoferrate Film Electrode Upon Treatment in Alkaline Solutions.

ChemInform ◽  
2010 ◽  
Vol 28 (12) ◽  
pp. no-no
Author(s):  
T. R. I. CATALDI ◽  
R. GUASCITO ◽  
A. M. SALVI
Keyword(s):  
Electrochemical Behavior ◽  
Alkaline Solutions ◽  
Film Electrode ◽  
Nickel Hexacyanoferrate ◽  
Xps Study

INVESTIGATION OF THE ELECTROCHEMICAL BEHAVIOR OF HEAT-TREATED CARBON BLACKS AND Pt/C CATALYSTS

2002 ◽  
Vol 09 (03n04) ◽  
pp. 1443-1452 ◽  
Author(s):  
C. D. HUANG ◽  
Z. T. XIONG ◽  
J. Y. LIN ◽  
K. L. TAN
Keyword(s):  
Carbon Black ◽  
Electrochemical Behavior ◽  
Catalyst Support ◽  
Carbon Surface ◽  
Carbon Blacks ◽  
Heat Treated ◽  
Platinum Particles ◽  
Electro Oxidation ◽  
Treated Carbon ◽  
Xps Study

In this paper we report the electrochemical behavior of heat-treated carbon blacks and Pt/C catalysts. Cyclic voltammetry indicates that the heat-treated carbon black as catalyst support does not improve the Pt/C catalyst's activity for methanol oxidation. An XPS study of a Pt-loaded carbon black indicates that the amounts of oxidized platinum and oxygen-functional groups on catalysts are decreased when the platinum particles are deposited on the heat-treated carbon surface. These changes in the surface and crystalline structural properties of carbon materials lead to the catalytic activity change in methanol electro-oxidation.

Electrocatalytic oxidation of thiosulfate on a modified nickel hexacyanoferrate film electrode

1993 ◽  
Vol 345 (6) ◽  
pp. 424-427 ◽  
Author(s):  
Xingyao Zhou ◽  
Shengfu Wang ◽  
Zhengpin Wang ◽  
Mian Jiang
Keyword(s):  
Electrocatalytic Oxidation ◽  
Film Electrode ◽  
Nickel Hexacyanoferrate

Cyclic Voltammetry Studies on Electrochemical Behavior of the Composite Ni-P+TiO2 Electrocatalysts in Alkaline Solutions

2015 ◽  
Vol 228 ◽  
pp. 207-212
Author(s):  
B. Łosiewicz ◽  
Magdalena Popczyk ◽  
A. Budniok
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Behavior ◽  
Alkaline Solutions ◽  
Electrochemical Characteristics ◽  
Composite Component ◽  
Anode Polarization ◽  
Temperature Conditions ◽  
Naoh Solution

Electrochemical characteristics of the composite Ni-P+TiO2electrocoatings with a differentiated content of TiO2composite component from 14 to 20 at.%, dependent on temperature conditions of electrodeposition from 293 to 333 K, was carried out in an alkaline 2.5 M NaOH solution. Cyclic voltammetry studies of the Ni-P+TiO2coatings and comparable Ni-P electrocatalysts revealed that cyclic cathode-anode polarization activated TiO2as the embedded composite component for the Ni-P+TiO2coating obtained at 333 K only.

Microstructure and Corrosion Behavior of Electrodeposited NiCo, NiZn and NiCu Nanocrystalline Coatings in Alkaline Solution

2017 ◽  
Vol 231 (6) ◽  
Author(s):  
H. Nady ◽  
M. Negem
Keyword(s):  
Corrosion Behavior ◽  
Electrochemical Behavior ◽  
Electrochemical Impedance ◽  
Equivalent Circuit Model ◽  
Theoretical Data ◽  
Alkaline Solutions ◽  
Sulfate Electrolyte ◽  
Ultrasound Waves ◽  
The Matrix ◽  
The Stability

AbstractThe present paper deals with evaluation of corrosion behavior of electrodeposited nanocrystalline (Nc) NiCo, NiZn and NiCu alloys. Nc NiCo, NiZn and NiCu coating electrodes were electroplated from sulfate electrolyte on copper foil by the galvanostatic technique and ultrasound waves. The chemical composition, surface morphology and crystalline structure of the different alloys were studied using energy dispersive spectroscopy, scanning electron microscope and X-ray diffraction methods. The electrochemical behavior of the deposited material in 1.0 M KOH solutions was investigated. The electrochemical behavior of the coating electrodes in alkaline solutions was investigated by potentiodynamic polarization techniques and electrochemical impedance spectroscopy (EIS). Results showed that the alloying of nickel with Co causes an increase in the stability of Ni–alloy in alkaline solutions in comparison to Ni–Cu and Ni–Zn alloys. The corrosion resistance values of Ni–Zn coatings were lower compared to those of the other investigated alloy coatings due to preferential dissolution of Zn from the matrix. The experimental impedance data were fitted to theoretical data according to a proposed equivalent circuit model representing the electrode/electrolyte interface.

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