Surface nitridation of Li-rich layered Li(Li0.17Ni0.25Mn0.58)O2 oxide as cathode material for lithium-ion battery

Effect of cooling on the structure and electrochemical properties of 0.3Li2MnO3 · 0.7LiNi0.5Mn0.5O2 cathode material

“…Obviously, the peak of N 1s could be observed in the ANmaterial only in Fig. 4e and the binding energy of N 1s at 398.6 eV is well accord with the report by Zhang et al [39]. Figure 5 presents the charge and discharge profiles of the AF-material and AN-material at 0.1C rate in the voltage range of 2.0-4.8 V vs. Li + /Li for the first, second, third, and ninth cycles.…”

Li3V2(PO4)3-coated Li1.17Ni0.2Co0.05Mn0.58O2 as the cathode materials with high rate capability for Lithium ion batteries

“…The additional weak reflections between 20 and 25 are characteristic of a complex Li 2 MnO 3 -LiMO 2 phase (space group C2/m), which correspond to the ordering of Li, Ni, Co and Mn atoms in the transition metal layers [25][26][27][28]. Another observation in the XRD patterns is the clear splitting of the (006)/ (102) and (018)/(110) peaks, indicating that the material has a wellorganized layered structure [29,30]. For LVP-coated LNCMO (3 wt %-10 wt%), the peak intensity has obviously been decreased.…”

La2O3-coated Li1.2Mn0.54Ni0.13Co0.13O2 as cathode materials with enhanced specific capacity and cycling stability for lithium-ion batteries

“…(1) large irreversible capacity loss (ICL) in the 1st cycle, which is attributed to the removal of Li 2 O from the Li 2 MnO 3 component during the 1st charging process; this process accompanies with the removing of oxygen-ion vacancies, leading to the reduction in Li + ion insertion sites in the subsequent cycles [9,14,15]; (2) poor rate capability relating to the low electronic conductivity and poor lithium ion diffusion coefficient of Li 2 MnO 3 component [9,16,17]; (3) fast capacity fading arising from the structure evolution from layered to spinel during further cycling [15,18,19]. Many approaches have been taken to solve these disadvantages of Li-rich cathodes, including structure and morphology control [20,21], mild acidic treatment [22][23][24], cationic substitution [25][26][27][28] and the formation of composite cathode with lithium-free insertion host materials [29,30].…”