Solvothermal synthesis of nano LiMn0.9Fe0.1PO4: Reaction mechanism and electrochemical properties

Improved electrochemical properties of LiFe0.5Mn0.5PO4/C composite materials via a surface coating process

“…1.09e1.15) of the bare and LTO-coated LFMP/C composite samples were similar because of the carbon sources being identical. The discharge capacities and rate capabilities of the LFMP/C samples were closely related to the intensity ratio of the D-band to the G-band [19,20]. It was found that the R 1 value (R 1 ¼ I D /I G ) of all LFMP/C composites ranged from around 1.09 to 1.12, and the R 2 value (R 2 ¼ (I D þ I G )/I PO43À ) was in the range 7.0e11.4.…”

“…6(c). The lithium chemical diffusion coefficient of an electrode was calculated from the following Equation (1) [19,20]:…”

“…6(d), D i represents the lithium diffusion coefficient, R represents the gas constant, T is the absolute temperature, F represents Faraday's constant, A represents the area of the electrode, and C represents the molar concentration of Li þ ions (C Liþ ¼ 1.0 Â 10 À3 mol cm À3 ) [20]. Table 2 shows a summary of the calculated R b , R ct , and D i for the bare LFMP/C composite sample and the LTO-coated LFMP/C composite samples.…”

Synthesis of hierarchical conductive C/LiFePO 4 /carbon nanotubes composite with less antisite defects for high power lithium-ion batteries

“…The absorption band in FTIR spectra around 1000 cm -1 is widely applied to represent the antisite defects concentrations in olivine-structured materials [25,33,34], which is identified as the symmetric stretching P-O vibration of the PO 4 tetrahedron.…”

Surfactant-assisted solid-state synthesis of 6LiMn0.8Fe0.2PO4·Li3V2(PO4)3/C nanocomposite for lithium-ion batteries

“…4 Recent reports have proven that the electrochemical kinetics of LiMnPO 4 can be remarkably improved by partially replacing Mn with Fe. Various LiMn 1Ày Fe y PO 4 (0 < y < 1) solid solutions, such as LiMn 0.9 Fe 0.1 PO 4 , 11,12 LiMn 0.8 Fe 0.2 PO 4 , [13][14][15][16] LiMn 0.6 Fe 0.4 PO 4 , [17][18][19] LiMn 0.5 Fe 0.5 PO 4 ,20 LiMn 0.4 Fe 0.6 PO 4 , [21][22][23] etc., exhibit much better electrochemical performance than the pristine LiMnPO 4 . Yang et al 24 synthesized a LiMn 0.8 Fe 0.2 PO 4 /C composite using a co-precipitation method, which provided a specic capacity of 160.6 mA h g À1 at 0.05C.…”