Review of the structure and the electrochemistry of nickel hydroxides and oxy-hydroxides

This paper presents a review of the redox and electrocatalytic properties of transition metal oxide electrodes, paying particular attention to the oxygen evolution reaction. Metal oxide materials may be prepared using a variety of methods, resulting in a diverse range of redox and electrocatalytic properties. Here we describe the most common synthetic routes and the important factors relevant to their preparation. The redox and electrocatalytic properties of the resulting oxide layers are ascribed to the presence of extended networks of hydrated surface bound oxymetal complexes termed surfaquo groups. This interpretation presents a possible unifying concept in water oxidation catalysis – bridging the fields of heterogeneous electrocatalysis and homogeneous molecular catalysis.

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Redox and electrochemical water splitting catalytic properties of hydrated metal oxide modified electrodes

A comparative study of the oxygen evolution reaction on oxidised nickel, cobalt and iron electrodes in base

Electrocatalytic oxidation of methanol at a nickel hydroxide/glassy carbon modified electrode in alkaline medium

Metals, in addition to ceramics and polymers, are important class of materials considered for replacement of non-functional parts in the body. Stainless steel 316, titanium and titanium alloys, Co-Cr, and nitinol shape memory alloys are the most frequently used metallic materials. These alloys are prone to corrosion in various extents. This review briefly discusses the important biomaterials, their properties, and the physiological environment to which these materials are exposed. Corrosion performance of currently used metallic materials has been assessed and threat to the biocompatibility from corrosion products/metal ions is discussed. The possible preventive measures to improve corrosion resistance by surface modification and to increase the bioactivity of the metallic surfaces have also been discussed. Importance of the formation of oxide layers on the metal surface, another aspect of corrosion process, has been correlated with the host response. The gap areas and future direction of research are also outlined in the paper.

Corrosion degradation and prevention by surface modification of biometallic materials

http://sedici.unlp.edu.ar/bitstream/handle/10915/81450/Documento_completo.pdf?sequence=1

The electrochemical behaviour of cobalt in alkaline solutions Part I. The potentiodynamic response in the potential region of the Co/CoO couple

The electrochemical behaviour of cobalt in alkaline solutions part II. The potentiodynamic response of Co(OH)2 electrodes

The splitting of the anodic and cathodic potentiodynamic E/I display of the nickel hydroxide electrode in 1 N KOH between 0 and 75° C is reported. The formal first order rate constants for the chemical reactions which occur simultaneously with the electrochemical steps, and the corresponding activation energies are evaluated. The results are discussed on the basis of the reaction model recently proposed for the nickel hydroxide electrode.

H. Gomez Meier

Papers

The electrochemical behaviour of cobalt in alkaline solutions Part I. The potentiodynamic response in the potential region of the Co/CoO couple

The electrochemical behaviour of cobalt in alkaline solutions part II. The potentiodynamic response of Co(OH)2 electrodes

The influence of temperature on the current peak multiplicity related to the nickel hydroxide electrode

Effect of temperature on the potentiodynamic response of Co/Co(II) 1 M NaOH electrode

The electrochemical behavior of cobalt in alkaline solutions. part ii. the potentiodynamic response of cobaltous hydroxide electrodes