Gel-combustion synthesis and electrochemical performance of LiNi_1/3Mn_1/3Co_1/3O₂as cathode material for lithium-ion batteries

High Efficient and Environment Friendly Plasma-Enhanced Synthesis of Al2O3-Coated LiNi1/3Co1/3Mn1/3O2 With Excellent Electrochemical Performance

“…To further investigate the effect of the Al 2 O 3 -coating on the electrochemical performance, the AC impedance curves of all the cycled samples were performed as shown in Figure 6A. The EIS plot consists of a depressed semi-circle in the highmedium frequency region that is attributed to the lithium-ion migration, through the SEI film and charge transfer reaction, and a straight line in the low frequency region attributed to the lithium-ion diffusion in the bulk electrode (Wang et al, 2014). A more detailed analysis of the impedance spectra was studied on the basis of the proposed equivalent circuit, where Rs represents the solution resistance and R ct represents charge transfer resistance during the electrochemical reactions.…”

Physical and electrochemical performance of LiNi 1/3 Co 1/3 Mn 1/3 O 2 cathodes coated by Sb 2 O 3 using a sol–gel process

“…5 compares the EIS plots of the bare, 1 wt%, and 2 wt% Sb 2 O 3 -coated LiNi 1/3 Co 1/3 Mn 1/3 O 2 before cycling. EIS plot consists of depressed semi-circle in the high to medium frequency region and straight line in the low frequency region ascribed the solid electrolyte interface and Warburg impedance [28]. The impedance values intercepted on axis of the real impedance at lower frequency region for the bare, 1 wt%, and 2 wt% Sb 2 O 3 -coated LiNi 1/3 Co 1/3 Mn 1/ 3 O 2 are around 112, 80, and 114 U, respectively.…”

Enhanced electrochemical performance of Li2NiTiO4 with micro-structural rearrangement via urea treatment

“…The appearance of satellite peaks could be ascribed to the multiple splitting which corresponds to the excited state in the energy bands. 16 For the sample LNT, the peak at the binding energy (BE) values of 855.7 eV can be assigned to Ni 2+ and the peak at 859.6 eV indicates the presence of Ni 3+ . [17][18][19][20] Aer the LNT was mixed with urea and treated in N 2 , for the sample of U-LNT-500, only one peak corresponding to Ni 2+ 2p at 855.6 eV was discovered, and no matched Ni 3+ 2p 3/2 peak was detected.…”