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Lithium-ion batteries with the FeF3·0.33H2O cathode material enable a high energy density and safety. However, a major challenge of FeF3·0.33H2O is its low conductivity. In this work, Fe1-2x/3MnxF3·0.33H2O (x = 0, 0.01, 0.03, 0.05, and 0.07) are prepared via the solvent thermal method. Systematic investigations have studied the effect of Mn-doping on the physical and electrochemical properties. The...
A carbon-coated LVP composite with a mixed morphology of particles and needles (M-LVP/C) has been successfully synthesized by a novel solvothermal assisted sol–gel process. Compared to S-LVP/C with single particle morphology, M-LVP/C has a much larger first discharge capacity of 125.2 mAh g−1 and higher capacity retention of 96.4% after 1000 cycles at 1 C between 3.0 and 4.3 V. Even at a high rate...
N-doped graphene/SnS composite as high-performance anode materials has been synthesized by a simultaneous solvothermal method using ethylene glycol as solvent. The morphology, structure, and electrochemical performance of N-doped graphene/SnS composite were investigated by transmission electron microscope (TEM), X-ray diffraction (XRD), Raman spectra, Fourier transform infrared (FTIR) spectra, X-ray...
Reduced graphene oxide/porous Si composite was fabricated through magnesiothermic reduction of mesoporous silica and subsequent dispersing porous Si in the suspension of graphene oxide followed by reduced process. The electrochemical performance of the obtained reduced graphene oxide/porous Si composite was investigated as anode for lithium ion batteries, and it delivers a reversible capacity...
Double-walled core-shell structured Si@SiO2@C nanocomposite has been prepared by calcination of silicon nanoparticles in air and subsequent carbon coating. The obtained Si@SiO2@C nanocomposite demonstrates a reversible specific capacity of about 786 mAh g−1 after 100 cycles at a current density of 100 mA g−1 with a capacity fading of 0.13 % per cycle. The enhanced electrochemical performance can be...
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