Correlation of oxygen non-stoichiometry to the instabilities and electrochemical performance of LiNi 0.8 Co 0.1 Mn 0.1 O 2 utilized in lithium ion battery

First-principles investigation of the structural characteristics of LiMO2 cathode materials for lithium secondary batteries

“…In actual synthesis, LiNiO 2 , which is a mix of ⑧, ⑨, ⑬, and ⑭ phases, would be synthesized due to the partial inhomogeneity of the composition, remaining V O , V Li , Ni Li , and NieLi exchange point defects in the crystal. This result is in accordance with previous reports by H. Chen et al [28] and Y. Bi et al [29], who reported that the V O , extra Ni, and LieNi antisites are the main form of defects in LiNiO 2 and caused structural instability. In this study, the formation of the point defects was found to be inevitable thermodynamic features for the synthesis of LiNiO 2 .…”

Surface/Interface Structure Degradation of Ni‐Rich Layered Oxide Cathodes toward Lithium‐Ion Batteries: Fundamental Mechanisms and Remedying Strategies

“…As discussed above, the content of Li residues and the level of cation disorder depend highly on the synthetic conditions, particularly for the contributions from the particle size, Li‐excess content, calcination temperature, calcination atmosphere, and heating/cooling rate. In particular, Wang et al investigate the kinetic and thermodynamic aspects of cationic ordering during synthesis of Ni‐rich cathodes by adjusting the sintering temperature and time .…”

“…Among these dopants above mentioned, the Mg, Al, and Zr are generally considered as the most appealing elements due to their low cost. The Mg 2+ ions can occupy the Li layer as pillar ions, thus enhancing the structural reversibility and reducing the anisotropic lattice distortion upon cycling . The Mg‐doped Ni‐rich cathode Li 0.98 Mg 0.02 Ni 0.94 Co 0.06 O 2 , as presented by Manthiram and co‐workers, is endowed with a large capacity of 214 mAh g −1 and stable cycling stability .…”

Improving the cycling performance of LiNi0.8Co0.1Mn0.1O2 by surface coating with Li2TiO3

“…To meet the requirement for ever-increasing energy and power density of the battery, many fields have been widely studied, such as Li-rich cathode materials, Ni-rich cathode materials, high-voltage electrolyte [1][2][3][4][5]. Recently, LiNi x Co y Mn 1-x-y O 2 cathode materials (Ni content≤60%) have been successfully adopted in commercial lithium ion batteries [6].…”