Enhanced electrochemical performance of LiF-modified LiNi1/3Co1/3Mn1/3O2 cathode materials for Li-ion batteries

Electrochemical Performances of the Fluorine-Substituted on the 0.3Li2MnO3·0.7LiMn0.60Ni0.25Co0.15O2Cathode Material

“…There were peaks of fluorine substitution in the diffraction pattern, which is consistent with previous reports [12,20,21,22,23]. In addition, it was reported that the small ionic radius of fluorine leads to a change in the lattice constant.…”

“…The reason that capacity stability improved was attributed to the fluorine substituted on the Li[Mn x Ni y Co z ]O 2 . And, the enhanced electrical conductivity of surface layer could decrease the impedance, resulting in improving cycle performance [20,22,23].…”

Synthesis and characterization of full concentration-gradient LiNi 0.7 Co 0.1 Mn 0.2 O 2 cathode material for lithium-ion batteries

“…from 149 mV at the first cycle to 113 mV at the second cycle. This may be due to activation of the initial charge and discharge process[32].The C-V curves of homogeneous LiNi 0.7 Co 0.1 Mn 0.2 O 2 during the initial and second cycles exhibit highly symmetrical and sharp anodic/cathodic peaks. However, the redox peaks of the C-V curve at 100th cycle become unsymmetrical and broad, the reduction peak nearly disappears.…”

High-energy cathode materials for Li-ion batteries: A review of recent developments

“…A variety of materials such as C [55], Al 2 O 3 [56], ZnO [57], ZrO 2 [58], CeO 2 [59], TiO 2 [60,61], Li 2 TiO 3 [62], MoO 3 [63] and fluorides [64,65] have been used for surface coating. The LiAlO 2 coating in the ultrathin LiAlO 2 -inlaid LiNi 0.5 Co 0.2 Mn 0.3 O 2 composite could effectively protect the bulk from directly contacting the electrolyte and enable a short diffusion route for both electron and Li + [66].…”