Improving the high-voltage performance of LiNi0.6Co0.2Mn0.2O2 by co-doping of zirconium and erbium

Enhancing the Structure and Interface Stability of LiNi0.83Co0.12Mn0.05O2 Cathode Material for Li-Ion Batteries via Facile CeP2O7 Coating

“…Figure g,h,i shows the detailed spectra of the C 1s orbitals in the three samples. The spectral peak between 288 and 292 eV reflects the carbon content in the form of Li 2 CO 3 on the surface . The Li 2 CO 3 content on the surface of W-LNCM83 and Aq-LNCM83@CPPO after certain modification treatments has a very obvious decrease compared to P-LNCM83.…”

“…The spectral peak between 288 and 292 eV reflects the carbon content in the form of Li 2 CO 3 on the surface. 44 The Li 2 CO 3 content on the surface of W-LNCM83 and Aq-LNCM83@CPPO after certain modification treatments has a very obvious decrease compared to P-LNCM83. For O 1s detailed spectra, the spectra peaks located between 530 and 534 eV correspond to the oxygen present in the form of amorphous compounds on the surface (surface residual content), and the spectral peaks between 528 and 530 eV correspond to the oxygen elements present in the crystal lattice phase.…”

Boosting the Electrochemical Performance of Lithium‐Rich Cathodes by Oxygen Vacancy Engineering

“…[23][24][25][26] The apparent splitting of the (018)/ (110) peaks and (006)/(012) peaks indicate a well-ordered layered structure. [27,28] Rietveld refinement results of all samples are briefly listed in…”

“…The ex situ XRD results reveal that the LLO-500 sample still exhibits a clear splitting between the (006)/(012) and (108)/(110) diffraction peaks; these findings indicate that the sintering temperature is beneficial to the formation of layered structures. [27,28] It is reasonable to expect that after charging to 4.7 V, the electrostatic repulsion between oxygen layers would be activated, shielded by Li atoms before charging. It can also be seen that the peak corresponding to the superlattice ordering of Li 2 MnO 3 disap- pears, confirming the activation process of Li 2 MnO 3 [23][24][25][26] as can be seen in Figure 5(c).…”

“…The XRD patterns of the cathodes show that all peaks can be indexed to the space group R‐3m with a layered hexagonal structure of α‐NaFeO 2 except for the weak diffraction peaks between 20° and 25°, which are attributed to the superlattice monoclinic C/2 m structure of Li 2 MnO 3 [23–26] . The apparent splitting of the (018)/(110) peaks and (006)/(012) peaks indicate a well‐ordered layered structure [27,28] . Rietveld refinement results of all samples are briefly listed in Table 1.…”