Structural and analytical characterization of an iridium oxide thin layer

Sputtered iridium oxide films as electrocatalysts for water splitting via PEM electrolysis

“…The procedure is appropriately called "activation" because during this process the amount of charge transferred through the electrode/electrolyte interface gradually increases to reach a maximal value for the system under study [8,9]. The anodically formed iridium oxide films in contact with the aqueous electrolytes are often considered as gellike material containing cross-linked chains of oxygen bridged hydroxyl-aqua iridium complexes [10,11]. The hydrous matrix can be easily permeated both with water and ionic species such as H + , OH − .…”

Secondary ion mass spectrometry characterization of IrO2-Ta2O5 thin films: effect of relative composition on electrode properties

“…5,6 Ta 2 O 5 is of particular interest, due to its property as a glass-former oxide. 9 In practice such a component seems to improve the stability of the noble metal oxide, possibly hindering its dissolution during the electrolysis. 5 The goal of this work is to investigate in detail the compositional and structural properties of IrO 2 -Ta 2 O 5 /Ti anodes with different nominal compositions by secondary ion mass spectrometry (SIMS).…”

“…5,6 Papers published in the last 25 years have shown that the physical and chemical properties of DSA 1 materials are strongly influenced by a number of parameters, such as the nature of the precursor salts and their solution, the oxidation temperature, the pyrolysis time, the kind of metal support and the nature of the stabilizer. [7][8][9] The last parameter in particular plays a very important role in the DSA 1 design, since it contributes to both the device stability and to its catalytic properties. 1 The most widely used stabilizer in DSA 1 synthesis is TiO 2 1-3 which, however, seems to be of more interest for the preparation of electrodes for chloro-alkali cells.…”

Periodic DFT Study of Rutile IrO2: Surface Reactivity and Catechol Adsorption

“…Indeed, although the structural [8][9][10] , electronic 7,[11][12][13][14] , conductivity 15,16 and optic [16][17][18][19] properties are well known for the bulk of iridium oxide, there is an evident lack of knowledge regarding the surface properties and the surface reactivity of this material. In particular, an atomic description of the surfaces is missing, limiting the knowledge and the interpretation of the physico-chemical phenomena taking place.…”