Lithium cobalt oxide

Lithium cobalt oxide[1]
IUPAC name	lithium cobalt(III) oxide
Other names	lithium cobaltite
Identifiers
CAS number	12190-79-3 Y
PubChem	24867970
Properties
Molecular formula	LiCoO2
Molar mass	97.87 g mol−1
Hazards
Main hazards	harmful
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Lithium cobalt oxide (LiCoO₂) is a chemical compound commonly used in the positive electrodes of lithium-ion batteries. The structure of LiCoO₂ is known theoretically and has been confirmed with techniques like x-ray diffraction, electron microscopy and neutron powder diffraction: it consists of layers of lithium that lie between slabs of octahedra formed by cobalt and oxygen atoms.^[2] The crystal structure is denoted Rm ^[3] in Hermann-Mauguin notation, signifying a rhombus-like unit cell with threefold improper rotational symmetry and a mirror plane. More simply, however, both lithium and cobalt are octahedrally coordinated by oxygen. Each cobalt atom is aligned on a common axis with lithium atoms and separated from each lithium atom by a triangle of oxygen atoms as can be seen in the figures. The threefold rotational axis is termed improper because the oxygen triangles are anti-aligned.

Lithium cobalt oxide is toxic to humans; adequate safety precautions should be taken when handling it.^{[citation needed]}

The compound's usefulness as an intercalation electrode was discovered in 1980 ^[4] by John B. Goodenough's research group at Oxford.

External links

• Imaging Lithium Atoms

References

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