Oxidedominant

Oxidedominant is a term used in materials science and chemistry to describe systems in which oxide components—oxide lattices, oxide ions, and oxygen vacancies—play the controlling role in determining key properties and behaviors. In oxidedominant materials, redox chemistry, ionic transport, and catalytic activity are governed predominantly by oxide species rather than other constituents, and oxygen content or deficiency strongly influences performance.

The concept encompasses a range of contexts. In solid-state chemistry and catalysis, oxide-dominated behavior can govern electronic structure, defect chemistry, and reaction pathways. In energy storage, oxide redox couples and anionic redox processes in metal-oxygen systems can drive capacity and voltage, making oxide chemistry a central determinant of performance. Oxide-dominant behavior is frequently discussed in relation to transition metal oxides, ceria-based materials, and oxide-supported catalysts, where surface and lattice oxygen control activity.

Characterization of oxidedominant systems typically relies on techniques that probe oxidation states and oxygen content, such as X-ray photoelectron spectroscopy (XPS), X-ray absorption near edge structure (XANES), electron energy loss spectroscopy (EELS), neutron diffraction, and thermogravimetric analysis (TGA). Complementary methods include X-ray diffraction and impedance spectroscopy to assess structure and transport properties.

The term is not widely standardized and may be used variably across literature. It highlights the central role of oxide chemistry in determining function, but should be applied with clear definition of the specific oxide-related phenomena being emphasized. See also oxide, oxygen vacancy, redox, and anionic redox.