Inequality of quenched and high temperature structure of lithium deficient LiMn2O4

High-Pressure Energy Dispersive X-Ray Diffraction Investigation of Lithium-Manganese Spinel

“…During the last 10 years several experimental studies on its high and low temperature phase transitions and also theoretical calculations have been carried out. The tetragonal structure of Li x Mn 3-x O 4 with c/a > 1 has been observed by Tarascon at al. [2].…”

Hooked on switch: strain-managed cooperative Jahn–Teller effect in Li0.95Mn2.05O4 spinel

“…28,29 Samples with a Li/Mn ratio smaller than 0.5 are multiphased if they are not quenched aer the sintering step. 30 For the lithium-manganese oxide of the chosen stoichiometry, the quenching does not preserve the high-temperature crystal structure, but enables the synthesis of a new material of intriguing structure and unusual, hitherto-unknown properties. Mn 3+ ions exist in the spinel structure of Li 0.95 Mn 2.05 O 4 in both tetrahedral and octahedral coordination geometries.…”

Effects of protecting layer [Li,La]TiO3 on electrochemical properties of LiMn2O4 for lithium batteries

“…The low cost and low toxicity of LiMn 2 O 4 have created intense research interest in its use as a replacement of LiCoO 2 [1][2][3][4][5][6][7]. However, the large capacity loss of LiMn 2 O 4 during the cycling phase discourages any commercial use of the material.…”