[PDF] Top 20 Electrochemical Evaluation of a Ir-Ru Binary Oxide for Oxygen Evolution Reaction

... Safety, high energy density and low maintenance requirement are some advantages of water electrolyzers. However, despite the feasibility of using such systems, the slow kinetics of the OER in the anode is an issue [11] ... See full document

... the oxygen and hydrogen for the FC operation ...the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), since those electrocatalysts that performs well the ... See full document

... the oxide powder on the substrate, coating process was repeated 2-3 ...The oxide film was then converted into electrode by making the connection with copper wire, silver paste and Araldite ...of ... See full document

... sputtered Ir films, thinner films ensure that a larger amount of the spectroscopically probed material is in touch with the triple-phase boundary between elec- trolyte, electrode, and water and is therefore ... See full document

... the oxygen evolution reaction, which makes it at- tractive in the oxidation of organic ...tin oxide in the composition film enhances the catalytic properties of the ... See full document

... the oxygen evolution. It has been noted that the oxides of Ir and Ru, and their combination with other metals; produce materials that are more convenient for OER ...in electrochemical ... See full document

... practice, the efficiency of water electrolysis is limited by the large anodic overpotential of the oxygen evolution reaction (OER). Therefore, the development of catalysts having a low overpotential ... See full document

... to oxygen evolution reaction in 1M KOH solution at 25 0 ...an oxide-slurry painting ...base oxide greatly influences the electrocatalytic ... See full document

... CH iR test was performed in a potential region with no observable faradaic activity and a solution resistance value of ...However, electrochemical impedance spectroscopy performed at the same potential ... See full document

... hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) ...the reaction: Pt electrodes with a high reduction potential are widely used [4], and in recent years, ... See full document

... oxide systems in present commercial applications [16]. Sn was selected on the basis of its high chemical and mechanical stability as well as its lower cost than the expensive noble metals [17]. The Adams fusion ... See full document

... All experiments were conducted in a conventional three elec- trode cell. The working electrode was constructed from 1.0 mm thick polycrystalline iron foil (as supplied by Alfa Aesar-Johnson Matthey, purity 99.9945% ... See full document

... multicomponent Ru and Ir composite oxides to further improve the CER activity, such as RuTi [17-24], RuSn [25-26], RuNi [27], IrTa [28], IrTi [29], RuIrTi [30], RuIrSn [31] and RuTiCeNb [32] composite ... See full document

... , are shown in Fig. 3. The diffractogram exhibited X-ray lines corresponding to the spinel phase. The XRD patterns showed cubic lattice with a space group of Fd-3m for each oxide material. No additional peaks for ... See full document

... into thermodynamic aspects of Ca-Ti-O-C-Cl system to pro- pose predominance area diagrams for electrochemical reduc- tion of titanium dioxide in molten calcium chloride. Interest- ing results/suggestions reported ... See full document

... and does not account for the kinetics of the electrode at higher potentials, that is, at potentials where some important reactions occur, e.g. HER or OER. Typical Tafel curves are illustrated in fig. 1.2.5. As it can be ... See full document

... deposited Ru on Hexcel 12K CF tow materials. Kinetics of the hydrogen evolution reaction were studied at room temperature, over the cathodic overpotential range: -100 to -800 mV ...other ... See full document

... adjustable parameters per layer: SLD, thickness, and roughness of the interface to the adjacent layer in the model. Least-squares refinement is used to minimize the differences between the calculated and measured ... See full document

... the oxygen electrode reversible potential of ...active oxide surface Fe sites to the +3 oxidation state, from a higher valance ...the oxide surface (at high anodic potentials in concentrated alkaline ... See full document

... resolved – although with a measured phase angle of ~ 10 degrees, a reasonable estimate was possible. It must be remembered, that using FRA based EIS equipment, the time required for the acquisition of data of ... See full document