Studies of cycleability of LiMn2O4 and LiLa0.01Mn1.99O4 as cathode materials for Li-ion battery

Electrochemical performance of rare-earth doped LiMn2O4 spinel cathode materials for Li-ion rechargeable battery

“…Similar results were also observed in La-doping [25], Ce-doping [26], Nd-doping [27] and Sm-doping [22] LiMn 2 O 4 . Figure 2 shows the first charge-discharge curves and cycle performance of LiMn 2−x RE x O 4 measured at 0.5C rate, and the results are summarized in Table 2.…”

Enhanced Electrochemical Properties of Surface Modified LiMn2O4by Li-Fe Composites for Rechargeable Lithium Ion Batteries

“…The changes of R sei are 9.95, 8.39, and 6.89 Ω for pristine, LMO-LF5, and LMO-LF10 samples, respectively. The resistance of SEI film (Rsei) is strongly related to the thickness and species of the SEI layer, 27 and the dissolution of manganese would lead to the deposition of MnO2, MnF2 and LiF on the surface, 28 resulting in an increase in the resistance. However, due to the protection by the solid solution phase on the surface of the particle, the modified samples show a lower Rsei, which is in accordance with the dissolution test.…”

Lithium-ion batteries (LIBs) for medium- and large-scale energy storage

“…Finally, new cathode chemistries should include abundant, stable, environmentally friendly, and biocompatible elements and compounds to allow low-cost batteries for future large-scale applications (Whittingham, 2004 Given the good performance of LiMn 2 O 4 in terms of high rate capability, cycling stability, and safety as well as cost and environmental impact, attempts for improving its performance have resulted in the partial substitution of manganese by other metal ions (Gummow et al, 1994;Guohua et al, 1996;Hernán et al, 1999;Kim et al, 2004a,b,c;Lee et al, 2001aLee et al, ,b, 2007Molenda et al, 2004;Ohzuku et al, 1999;Singhal et al, 2007;Tu et al, 2006;Yang et al, 2003). If high operating voltage and capacities are needed for an increase in energy density, cycling stability is also a must.…”