C´iric´-Marjanovic´, G. Mentus, S.
Published in
Journal of Applied Electrochemistry
Polythiophene films were electrochemically deposited on glassy carbon substrates under potentiostatic control and used as cathode active material together with a Zn anode in a rechargeable battery with propylene carbonate, Zn(ClO4)2, LiClO4 electrolyte. Charge–discharge characteristics were studied. The average discharge voltage of the polythiophen...
Delime, F. Le´Ger, J. M. Lamy, C.
Published in
Journal of Applied Electrochemistry
Nafion® can be used as a solid polymer electrolyte in a PEM fuel cell. Direct platinization of the membrane was realized by chemical reduction of a platinum compound. The platinization procedure was modified to enhance the roughness factor and thus to improve the electrocatalytic activity towards ethanol electrooxidation. The Pt–PEM electrodes were...
Go´mez, E. Ramirez, J. Valle´s, E.
Published in
Journal of Applied Electrochemistry
Cobalt–nickel alloys were electrodeposited in an acid bath containing various ratios of metallic cations. The effect of the plating variables on the composition and morphology of the deposits obtained on vitreous carbon electrodes was investigated. Different proportions of the two metals can be obtained by using different deposition parameters, but...
Zwart, I. Portegies Janssen, L. J. J.
Published in
Journal of Applied Electrochemistry
To reduce metal ions in dilute solutions a new type of electrochemical reactor has been developed: the GBC-reactor. This reactor consists of a gas diffusion electrode coupled with a packed bed electrode. The working principle of the reactor is based upon two main reactions: the catalytic oxidation of hydrogen gas in the gas diffusion electrode and ...
Levason, W. Pletcher, D. Smith, A. M. Berzins, A. R.
Published in
Journal of Applied Electrochemistry
When Pt(NO2)42− is dissolved in methanesulphonic acid, it is shown that nitrite ions are displaced by water ligands and the extent of ligand substitution depends on temperature, length of the thermal treatment and the concentration of acid. Although the final nitrite ligand is difficult to displace, a solution containing Pt(NO2)(H2O)3+ as the domin...
Cepria´, G. Castillo, J. R.
Published in
Journal of Applied Electrochemistry
Four cobalt complexes (cobalt(II) acetylacetonate and 8-hydroxyquinolinate and cobalt(III) 8-hydroxyquinolinate and diethyldithiocarbamate) were tested as mediators to modify carbon paste electrodes with a view to obtaining a catalytic effect for the hydrazine. Cobalt(II) acetylacetonate was found to exert no catalytic effect as the likely result o...
Enea, O. Zaytouni, B. Moser, J.
Published in
Journal of Applied Electrochemistry
Porous semiconducting ceramics deposited on a porous metallic film acting both as catalyst and electronic collector gave large photocurrents and considerably enhanced electrooxidation currents when irradiated in the presence of small amounts of alcohol vapours. The morphological properties of these layered materials, was studied by electron (SEM, E...
Malyszko, J. Michalkiewicz, S. Goral, D. Scendo, M.
Published in
Journal of Applied Electrochemistry
The electrochemical oxidation of Mn(ii) and Co(ii) and reduction of Mn(iii) and Co(iii) at Pt in glacial acetic acid has been investigated by the rotating disc electrode technique. The diffusion coefficients of Mn(iii), Mn(ii), Co(iii) and Co(ii) ions, formal potentials and kinetic parameters of the Mn(iii)/Mn(ii) and Co(iii)/Co(ii) electrode react...
Bing, L. Wei-Kang, H.
Published in
Journal of Applied Electrochemistry
Riegel, H. Mitrovic, J. Stephan, K.
Published in
Journal of Applied Electrochemistry
The process of hydrogen evolution during alkaline electrolysis of aqueous solutions is governed by mass transfer, growth of hydrogen bubbles and removal of hydrogen from the cathode. Two mechanisms are decisive for hydrogen removal: (i) hydrogen dissolved in the solution is carried off from the cathode surface by diffusion and convection, and (ii) ...
