Synthesis and electrochemical characterization of nano-CeO2-coated nanostructure LiMn2O4 cathode materials for rechargeable lithium batteries

Insight into Lithium-rich Layered Cathode Materials Li[Li0.1Ni0.45Mn0.45]O2 in situ Coated with Graphene-like Carbon

“…Fig. 6(b) reveals only one semicircle, which is indicative of the combination of two semicircles, in both the pristine and LPAN-coated cathode materials [36]. Compared to the pristine Li [ is attributed to the decreased amount of manganese dissolved in the electrolyte and the smaller charge transfer resistance generated by the graphene-like membrane coating.…”

Effects of protecting layer [Li,La]TiO3 on electrochemical properties of LiMn2O4 for lithium batteries

“…In order to solve this problem, surface modification of the cathode material is an effective method to reduce the side reactions [2,9,10]. Researchers have focused on the surface modification of LiMn 2 O 4 by means of ZrO 2 [9], CeO 2 [10], MgO [18], Al 2 O 3 [19], and LiNi 1/2 Mn 1/2 O 2 [20]. The modification effects correlate highly with the modifying material.…”

“…To overcome these problems, many efforts have been devoted to modify the problems originating from the intrinsic characteristics of LiMn 2 O 4 . Cation doping is considered to be an effective strategy to improve the problems of LiMn 2 O 4 by means of a series of transition metalsubstituted spinel lithium manganese oxides [10,[14][15][16]. However, Mn dissolution resulted from some side reactions that occurred at the interface between the electrode and the electrolyte during the charge/discharge process [2], and the interfacial reaction between the active material and the electrolyte plays a significant role in lithium secondary batteries [17].…”

“…However, Mn dissolution resulted from some side reactions that occurred at the interface between the electrode and the electrolyte during the charge/discharge process [2], and the interfacial reaction between the active material and the electrolyte plays a significant role in lithium secondary batteries [17]. In order to solve this problem, surface modification of the cathode material is an effective method to reduce the side reactions [2,9,10]. Researchers have focused on the surface modification of LiMn 2 O 4 by means of ZrO 2 [9], CeO 2 [10], MgO [18], Al 2 O 3 [19], and LiNi 1/2 Mn 1/2 O 2 [20].…”

“…However, the large capacity loss of LiMn 2 O 4 during the cycling phase discourages any commercial use of the material. The capacity fading during cycling is attributed to various factors, such as manganese dissolution in the electrolyte [8][9][10], Jahn-Teller distortion [11,12], and the formation of an oxygen deficiency [13]. To overcome these problems, many efforts have been devoted to modify the problems originating from the intrinsic characteristics of LiMn 2 O 4 .…”