Improvement of the electrochemical performance of LiMn2O4 cathode active material by lithium borosilicate (LBS) surface coating for lithium-ion batteries

Synergetic action of doping and coating on electrochemical performance of lithium manganese spinel as an electrode material for lithium-ion batteries

“…The good cyclability is probably due to the substitution of some Therefore the contact of the cathode with electrolyte would result in the dissolution of the cathode and do great harm to its performance. As we obtained in our previous study, 39 the LBS coating prevented direct contact between the spinel and the electrolyte and therefore reduced the dissolution of manganese and the oxidation of electrolyte. These results indicate that Jahn-Teller distortion and the reaction of Mn dissolution in the cathode material were suppressed via the synergetic effect of multication doping and LBS coating.…”

“…In a previous study 39 we successfully coated lithium borosilicate (LBS) on the surface of LiMn 2 O 4 and obtained satisfactory improvement in capacity retention. In the present study, to improve the capacity fade of the cathode, we used two different modification methods.…”

Effect of temperature of Li2O–Al2O3–TiO2–P2O5 solid-state electrolyte coating process on the performance of LiNi0.5Mn1.5O4 cathode materials

“…Thus, we expect lithium ionic conductor instead of inert oxides as coatings would realize more significant improvement. Many researchers included our group [20e22] have demonstrated spinel LiMn 2 O 4 surface-modified by lithium-ion solid-state electrolytes such as LLTO [23] and LBSO [24] exhibits better performance. We also noticed that many researches focused on the effect of coating material types or amounts, neglected effect of coating process conditions such as heat-treated temperature on the electrochemical performance of cathode materials.…”

Electrochemical performance of layer–spinel composite cathode materials at elevated temperature and high rate

“…To restraint the manganese dissolution of LiMn 2 O 4 caused by the side reaction, many researchers have attempted to improve the high temperature cyclic performance by controlling surface feature of electrode materials. Up to now, the majority of the coating materials have been carbon [5], inert oxides (such as Al 2 O 3 [6], TiO 2 [7], SiO 2 [8] and CeO 2 [9]), lithium-ion solid electrolytes (such as LLTO [10,11], LATP [12], LLZO [13], LBSO [14] and LASO [15]) and electrode materials (such as Li 4 Ti 5 O 12 [16], LiFePO 4 [17], ZnMn 2 O 4 [18], LiCoO 2 [19] and LiNi 1/2 Mn 1/2 O 2 [20]). In the meantime, spinel LiMn 2 O 4 mixed with different types of insertion compounds [e.g., layered LiMO 2 (M = Ni, Co, and Mn)] exhibits better cycling performance and safety characteristics at high temperatures.…”