A novel surface-heterostructured Li_1.2Mn_0.54Ni_0.13Co_0.13O₂@Ce_0.8Sn_0.2O_2−σ cathode material for Li-ion batteries with improved initial irreversible capacity loss

Abstract

The modification of lithium-rich layered cathode materials has been widely studied by surface coating, doping and chemical treatment for lithium-ion batteries.

Structure and electrochemical performance modulation of a LiNi0.8Co0.1Mn0.1O2 cathode material by anion and cation co-doping for lithium ion batteries

“…3d) with a spacing about 0.2704 nm, matching to (101) plane of the layered structure. [32][33][34] The result of Fast Fourier Transform analysis is shown in Fig. 3e, which shows that the material of NCM/CB is wellpreserved as the R 3m phase.…”

LiVOPO4‐Modified Lithium‐Rich Layered Composite Cathodes for High‐Performance Lithium‐Ion Batteries

“…Clearly, the major diffraction peaks of all products can be indexed based on a hexagonal α‐NaFeO 2 structure with a space group of R‐3m [47–49] . Also, the weak superlattice peaks around 2θ=20–25° could be indexed based on a monoclinic Li 2 MnO 3 component with a C2/m space group, caused by the Li/Mn ordering in the transition metal layers [50–53] . The well‐developed layered structure of each sample is evidenced by the distinct peak separations of (018)/(110) and (006)/(012) [54,55] .…”

Multi-dimensional correlation of layered Li-rich Mn-based cathode materials

“…Coating materials are generally divided into oxides [150][151][152] , phosphates [153] , fluorides [154,155] and conductive polymers [156] , and the surface treatment object can be an electrode material or precursor. Inert oxides, such as Al 2 O 3 [157] and SnO 2 [158] , can only build an inactive isolation layer on the surface of the materials to avoid the side reactions caused by direct contact with the electrolyte, but they may reduce the electron/ion conductivity and affect the rate performance.…”