Oxidation number of oxygen atoms in oxygen difluoride
When required in tonnage quantities, oxygen is prepared by the fractionaldistillationof liquid air. Of the main components of air, oxygen has the highest boiling point and therefore is lessvolatilethannitrogenandargon. The process takes advantage of the fact that when a compressed gas is allowed ...
The Tafel equation is an approximate fitting formula of the Butler-Volmer equation under high activation loss. When the fuel cell outputs current, the external output current indicates the forward reaction is dominant, and the activation loss is large. In this case, the Tafel equation also has ...
Perovskite materials having a general formula of ABO3-d and good oxygen conductivity are used as oxygen-permeable membranes. In these materials, the A site is occupied by alkaline metals or rare earth metals, whereas the B site is occupied by transition metals. The combination of these ...
The oxygen speciation and its local structure in γ-Al2O3remain largely unknown. The emerging high magnetic field up to 35.2 T (1.5 GHz) with dramatically improved sensitivity and resolution opens new stage for the application of17O NMR spectrosopy41,42,43. In this contribution, we pr...
the periodic table, and it is represented by the chemical symbol O[1, 2, 3]. A highly reactive non-metal, it can easily form oxides with most of the other elements and their compounds[3]. At room temperature, it is an odorless, tasteless diatomic gas characterized by the formula O2[3...
Proton-exchange membrane water electrolysis is a promising technology for green hydrogen production, but its widespread commercialization is hindered by the high cost and scarcity of precious-metal-based catalysts for the oxygen evolution reaction (OER). Recent progress has been made in developing low-...
UsesThe most obvious use of oxygen is to support life. The process of aerobic respiration uses O2 in an oxidation reaction that produces H2O and energy required for metabolic reactions. Uses of commercially produced O2 gas are mainly industrial and medical. O2 is a highly reactive element that ...
During gas sensing process, the Sn species with higher valence can catalyze the oxidation of H2, thus improving the response speed of SGO29,30. The morphology and elemental distribution of SGO are characterized by scanning electron microscope (SEM) (Supplementary Fig. 8), transmission electron ...
We use ab initio methods to develop a quantitative elementary reaction model of oxygen exchange in a representative cathode material, La0.5Sr0.5CoO3−δ, and predict that under operating conditions the rate-limiting step for oxygen incorporation from O2 gas on the stable, (001)-SrO surface...