Effects of Al2O3 and LiAlO2 Co-coating on electrochemical properties of LiNi0.8Co0.1Mn0.1O2 cathode materials

LiNbO3 Coating and F– Doping Stabilize the Crystal Structure and Ameliorate the Interface of LiNi0.88Co0.06Mn0.03Al0.03O2 to Improve the Electrochemical Properties and Safety Capability

“…While the residual lithium belongs to a barrier for electrons and ions transporting, the less residual lithium surrounded on the cathode surface contributes to enhancing the rate charging− discharging capability. 31 It is mainly because N 2 O 5 has reacted with the lithium compounds and then forms the LiNbO 3 new phase adhered on the Ni-rich cathode surface. XRD patterns of four cathodes were investigated to characterize the phase structures, which are obtained through the analysis of material refinement via the Rietveld method of GSAS/EXPGUI software, as shown in Figure 1a and Table 2.…”

“…The bare cathode and F – -doped sample express the summation of residual lithium for 6201 and 6119 ppm, and the LNO-coated and LNO-F – -modified cathode show less amounts of 4386 and 4286 ppm. While the residual lithium belongs to a barrier for electrons and ions transporting, the less residual lithium surrounded on the cathode surface contributes to enhancing the rate charging–discharging capability . It is mainly because N 2 O 5 has reacted with the lithium compounds and then forms the LiNbO 3 new phase adhered on the Ni-rich cathode surface.…”

One-step uniform rotation solvothermal synthesis of a Li3VO4@rGO anode material with superior cycling and rate performance

“…1,2 Given their high energy density, ideal cycling durability without memory effect, and environmental friendliness, 3 lithium-ion batteries (LIBs) have become essential in various fields, such as pluggable electronic devices, 4 electric vehicles, 5 and aerospace. 6 Nevertheless, the slow kinetics and relatively low theoretical capacity (372 mA h g −1 ) of the most common insertion anode material, graphite, are no longer able to meet the growing demand for energy density. 7,8 In addition, the working potential of graphite (<0.1 V vs. Li + /Li) is close to the growth potential of lithium dendrite, which poses serious safety issues.…”

Regulating Grind‐Induced Lattice Distortion for Nickel‐Rich Cathodes by Annealing

“…Presently, layered nickel-rich cathodes DOI: 10.1002/smtd.202301400 (LiNi x Co y Mn z O 2 , x≥0.8) have emerged as promising cathode materials for highenergy-density LIBs due to their advantages in specific capacity and work voltage. [5][6][7][8][9][10][11] Nevertheless, such a high nickel content inherently leads to structural instability and undesirable catalysis during high de-lithiation conditions. Structural instability has been well understood as the H2-H3 phase transition, accompanied by large volume change during the cycle, leading to crack formation.…”