Preparation and characterization of LiMn1.5Me0.5O4
(Me = Ti, Fe, Ni, Zn) for lithium-ion battery cathode materials①
(Me = Ti, Fe, Ni, Zn) for lithium-ion battery cathode materials①
(School of Science, Xi′an Jiaotong University, Xi′an 710049, China)
Abstract: Based on synthesizing pure spinel type lithium manganese oxides, the derivations such as LiMn1.5Ti0.5-O4,LiMn1.5Fe0.5O4, LiMn1.5Ni0.5O4 and LiMn1.5Zn0.5O4were prepared using solid -step- sintering method. The structures were characterized by using XRD, SEM and laser granulometer. The electrochemical measurement results show that the element of iron or nickel can raise the discharging plateau voltage of LiMn2O4, and element titanium improves the electro-
chemistry property of LiMn2O4little, while element zinc destroys the electrochemistry property of LiMn2O4. The influence of elements of titanium, iron, nickel, or zinc on the structure of LiMn2O4pure phase was discussed from the view point of structural chemistry.
chemistry property of LiMn2O4little, while element zinc destroys the electrochemistry property of LiMn2O4. The influence of elements of titanium, iron, nickel, or zinc on the structure of LiMn2O4pure phase was discussed from the view point of structural chemistry.
Key words: lithium-ion battery; cathode material; lithium manganese oxide; derivations; characterization