Lithium Ion Extraction from Orthorhombic LiMnO2in Ammonium Peroxodisulfate Solutions

Synthesis of Layered-Type Hydrous Manganese Oxides from Monoclinic-Type LiMnO2

“…Similar structural transformation has been reported after orthorhombic-type LiMnO was treated with aqueous ammonium peroxodisulphate solution (18).…”

“…The interlayer distance was increased from 4.8 A > in LiMnO to 7.3 A > in the birnessite phase. Under similar conditions, a di!erent structural transformation of the orthorhombic-type LiMnO with a rock salt structure to a spinel like material was reported (18). The chemical analysis of LiMnO after treating with (NH ) S O solution is given in Table 1.…”

“…5, bottom). This showed that the extraction proceeded by the redox-type reaction, which can be described similar to that for the orthorhombic-type LiMnO (18). The redox-type reaction can be written as follows:…”

Synthesis and Characterization of Tin Niobates

“…Tin niobates (Sn >V Nb O >V , x"0.0, 0.5, and 1.0) have been prepared by both mixing of the oxide precursors and by the so-called #ux method (8). In the former, stoichiometric amounts of SnO (Aldrich, 99%) and Nb O (Aldrich, 99.9%) have been ground and carefully mixed in an agate mortar.…”

Synthesis of LiMn1/3Ni1/3Co1/3O2 in molten KCl for rechargeable lithium-ion batteries

“…Because of the short diffusion distances among different reactants, and the relatively high mobility of reactant species (10 −5 to 10 −8 cm 2 s −1 ) in the molten salt media (compared to as low as 10 −18 cm 2 s −1 in the solid state), a full reaction can be accomplished in a relatively short time [22]. Recently, MSS has been used as a soft chemistry route to synthesize positive electrode materials for rechargeable Li ion batteries: Tang et al [23] and Ni 2 O 3 were used as reagents. Such MSS process contributes to obtaining a final product with accurate lithium content.…”