Large discharge capacities at high current rates for carbon-coated LiMnPO4 nanocrystalline cathodes

High rate capability and cycle performance of Ce-doped LiMnPO 4 /C via an efficient solvothermal synthesis in water/diethylene glycol system

“…The lattice parameters and unit cell volumes of cycled LCe0 are a = 6.11502 Å, b = 10.44360 Å, c = 4.74611 Å and V = 303.10 Å 3 , while those of cycled LCe3 are a = 6.10576 Å, b = 10.44324 Å, c = 4.74998 Å and V = 302.88 Å 3 . The variations of lattice parameters before and after cycling may be caused by the Jahn-Teller distortion which creates mechanical stress and causes lattice distortions [36]. Comparing the lattice parameters in Table 2, cycled LCe3 shows less variation in the lattice parameters than cycled LCe0, and the variation in cell-unit volume for LCe0 is about 3 times larger than that of LCe3 after cycling.…”

Ionothermal synthesis and electrochemical analysis of Fe doped LiMnPO4/C composites as cathode materials for lithium-ion batteries

“…In the circuit, the solution resistance of the electrolyte is represented by R e ; R ct represents the charge transfer resistance of electrochemical reaction; R f represents the film resistance of Li + diffusion in the film of the electrode surface; CPE 1 and CPE 2 designate the capacity of surface layer and double layer capacitance for lithium-ion intercalation, respectively; W represents the diffusion controlled Warburg impedance. The lithium diffusion coefficient D Li in the electrode can be calculated according to the following equation[36][37][38]:…”

Enhanced electrochemical properties of LiMnPO4/C composites by tailoring polydopamine-derived carbon coating

“…The rate capability of both samples is competitive among the previous reports (Fig. S2) [9][10][11]34]. Fig.…”