Redox reactions in condensed oxide systems XIII: Li insertion reaction of MgTiO3 and the spinels Mg2TiO4, MgNiMnO4 and MMn2O4 (M  Mn, Mg, Ni)

Simple synthetic route to manganese-containing nanowires with the spinel crystal structure

“…Spinels such as Fe 3 O 4 [1,2] Mn 3 O 4 [3,4] and LiMn 2 O 4 [5,6] for example, are known to perform well as electrodes for lithium ion batteries; of particular interest are the tests performed by Thackeray et al [7] and Feltz et al [8] who tested the lithiation kinetics for manganese-containing spinels MMn 2 O 4 (M ¼ Mn, Mg, Li), and found that the reducibility of the manganese cations was a crucial factor for lithiation. Besides their use as battery electrodes, manganese based spinels are also good catalysts for oxidation and reduction reactions: [9] CdMn 2 O 4 can be used as an electrode material for NO gas sensors; [10] NiMn 2 O 4 [11], mesoporous MnCo 2 O 4 [12], and high surface area CuMn 2 O 4 [13] have been shown to catalyze CO oxidation at ambient temperatures, exhibiting robust stabilities.…”