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Metal Oxides

Metal oxides are compounds formed between metals and oxygen, and they display a wide range of chemical and physical properties. Metal oxides are known for their high melting points, stability, and are often insulating or semiconducting in nature. These properties make metal oxides very versatile and useful in various applications. They are crucial in catalysis, both as catalysts and as supports for other catalysts, in environmental applications (like filters and sensors), in electronics (as semiconductors, insulators, and conductors in the form of thin films), and in energy storage (such as lithium-ion battery electrodes).

Semiconducting metal oxides are a group of materials characterized by their unique electrical properties, which lie between those of conductors and insulators. These oxides are typically metal compounds with oxygen, such as zinc oxide (ZnO) and titanium dioxide (TiO2). They are called semiconductors because they have a bandgap that allows them to conduct electricity under certain conditions, such as the presence of light or heat, which makes them very useful in various applications.

Metal oxides play a crucial role in battery technology, primarily in the electrodes of various types of batteries. In lithium-ion batteries, metal oxides are commonly used as cathode materials. The ability to release and take up lithium ions during the charging and discharging cycles is vital. Examples include lithium manganese oxide (LiMn2O4) and lithium nickel cobalt aluminum oxide (NCA).

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Related categories: low dimensional materials, 2D materials

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