Synthesis and characterization of nano-Li1.95FeSiO4/C composite as cathode material for lithium-ion batteries

Advances in high-capacity Li2MSiO4 (M = Mn, Fe, Co, Ni, …) cathode materials for lithium-ion batteries

This review highlights the high-capacity Li₂MSiO₄ (M = Mn, Fe, Co, Ni, …) cathode materials for lithium-ion batteries.

Structure and electrochemical performance of hollow microspheres of LiFexNi1/3−xCo1/3Mn1/3O2(0.000 ≤ x ≤ 0.267) as cathodes for lithium-ion batteries

For the LiFe_xNi_1/3−xCo_1/3Mn_1/3O₂(0.000 ≤x≤ 0.267) cathodes, the behavior of the lattice parameters is consistent with their specific capacities at a 0.1 C rate with the addition of iron, especially when they reach maxima atx= 0.133.

Systematic investigation on Cadmium-incorporation in Li₂FeSiO₄/C cathode material for lithium-ion batteries

Cadmium-incorporated Li₂FeSiO₄/C composites have been successfully synthesized by a solid-state reaction assisted with refluxing. The effect and mechanism of Cd-modification on the electrochemical performance of Li₂FeSiO₄/C were investigated in detail by X-ray powder diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, Raman spectra, transmission electron microscopy, positron annihilation lifetime spectroscopy and Doppler broadening spectrum, and electrochemical measurements. The results show that Cd not only exists in an amorphous state of CdO on the surface of LFS particles, but also enters into the crystal lattice of LFS. Positron annihilation lifetime spectroscopy and Doppler broadening spectrum analyses verify that Cd-incorporation increases the defect concentration and the electronic conductivity of LFS, thus improve the Li⁺-ion diffusion process. Furthermore, our electrochemical measurements verify that an appropriate amount of Cd-incorporation can achieve a satisfied electrochemical performance for LFS/C cathode material.