Chemical and Magnetic Characterization of Spinel Materials in the LiMn2O4–Li2Mn4O9–Li4Mn5O12System

Electric and Magnetic Properties of LiMn2O4- and Li2MnO3-Type Oxides

“…The spinel The behavior of the static magnetic susceptibility in the paramagnetic region is also consistent with the Mn> and high spin Mn> ions concentration deduced from the sample composition, according to the results of a recent study (7).…”

“…The spinel LiMn O and related phases possess peculiar applications in the fields of electrochemistry (1)(2)(3)(4) and catalysis (5)(6)(7).…”

X-ray Absorption Studies in Spinel-Type LiMn2O4

“…However, the creation of lithium and manganese vacancies or the substitution of lithium for manganese LiMn O is naturally accompanied by a change of the average oxidation state of manganese. It has been shown that the effective magnetic moment and the electrochemical properties for lithium manganospinels is corrected with the average valence of Mn (7). Therefore, the determination of the Mn valence in the as-prepared cathode material LiMn O becomes important which may give rise to understand the behavior of deintercalation/intercalation of Li ions.…”

NMR and FT-IR Investigation of Spinel LiMn2O4 Cathode Prepared by the Tartaric Acid Gel Process

“…When lithium manganese oxide was synthesized at low temperatures the cation-de"cient structure was usually observed. The presence of vacancies in the cation sublattice tends to make the lattice smaller (13,22). In addition, the spinel calcined at lower temperatures favors the formation of an oxidized manganese cation because manganese ions are stable preferentially as Mn> at lower temperatures (23,24).…”