Charge–discharge properties of LiCoO2 electrodes modified by olivine-type compounds of LiMgPO4 for lithium secondary batteries

Lattice Modulation by Ca/P Dual-Doping for Fast and Stable Li+ Intercalation/Extraction in High-Voltage LiCoO2

“…is the slope of the linear region of the ln(I) vs t plot. 28 As shown in Figure 5d, it can be seen that the diffusion coefficient of D2-LCO is higher than that of D0-LCO, which is consistent with the improvement of the rate capability and cycle performance. 29 The discharge curves of the materials in the rate and cycle tests are shown in Figure 6.…”

“…The Li + diffusion coefficients of D0-LCO and D2-LCO were tested by the Potentiostatic intermittent titration technique (PITT). The diffusion coefficient D can be calculated by the formula , where L is the thickness of the active material on the electrode, I is the titration current, and is the slope of the linear region of the ln­( I ) vs t plot . As shown in Figure d, it can be seen that the diffusion coefficient of D2-LCO is higher than that of D0-LCO, which is consistent with the improvement of the rate capability and cycle performance …”

Polypyrrole-coated LiCoO 2 nanocomposite with enhanced electrochemical properties at high voltage for lithium-ion batteries

“…As an alternative, the surface modification of LiCoO 2 with inorganic materials such as LiFePO 4 [12], LiMgPO 4 [13], LiNi 0.5 Mn 1.5 O 2 [8], LiNbO 3 [14], LiMn 2 O 4 [15], Li 4 [17], Al 2 O 3 [18], ZnO [19], LiF [20], MgF 2 [21] and FePO 4 [22] has been extensively investigated and achieved good effect on inhibiting capacity fading. However, the inorganic materials are discontinuously deposited onto the surface of LiCoO 2 , tending to act as an inert layer regarding ionic conduction and also require complex coating process.…”

Characteristics of High-capacity SiO-C Anodes Containing Olivine-type LiMgPO₄ Compounds for Lithium Secondary Batteries

“…The carbon works as a conductive auxiliary agent and cannot act as an active material. As described in our previous paper, 14 LiMgPO 4 (LMP) powder as an additive was prepared by mechanical milling (MM) treatment of a mixture of Li 2 O, MgO, and P 2 O 5 as the starting materials. The particle size was less than l µm and some of the particles were observed to aggregate.…”