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A micro-structured Si@Cu3Si@C ternary composite is designed to ease volume expansion of Si as well as to enhance the conductivity of the whole electrode. Structurally, Si particles with carbon shells are agglomerated to form a hierarchical micro-structured ternary component sphere. A benign initial coulombic efficiency (ICE) 70.5% with high reversible capacity after 200 cycles (1477 mAh g−1, 400 mA g...
LiBF4 has attracted much attention due to its better thermal stability, lower sensitivity to environmental humidity, and lower charge transfer resistance provided by its solution, especially at high voltage. Herein, the effects of the concentration of LiBF4 salt on the stability and electrochemical properties of LiNi0.5Mn1.5O4 (LNMO) cathode material have been investigated by using the mixed solvents...
This paper reports a simple-assembling synthesis of CuxO/C composite as the anode for lithium-ion batteries. The CuxO/C composite can be easily attained through using cotton as the template. Used as the anode material, the CuxO/C electrode has shown a relatively stable electrochemistry performance compared with the pristine CuO electrode. The cycling test results showed that the CuxO/C electrode achieved...
H + and Co 2+ ions co-doped polyaniline were synthesized by cyclic voltammetry onto the stainless steel mesh with various concentrations of cobalt chloride (CoCl 2 · 6H 2 O) in electrolyte. The structure and morphology of polyaniline (PANI) and PANI/Co 2+ films were characterized by Fourier transform infrared (FT-IR), X-ray diffraction...
Polyaniline/NiCo2O4 nanocomposites (PANI/NiCo2O4) with different amounts of NiCo2O4 (5, 8, 10, 15, and 20 wt%) were prepared via in situ chemical oxidation polymerization in the presence of the NiCo2O4 particles, while the NiCo2O4 nanoparticles were synthesized by a modified sol–gel method. The structure and morphology of PANI/NiCo2O4 nanocomposites were characterized by Fourier transform infrared...
With sodium hexametaphosphate ((NaPO 3 ) 6 ) as the inorganic structure-directing agent, the precursor of Co 3 O 4 was obtained by the method of simple liquid precipitation. Then Co 3 O 4 μm particles with octahedral crystal shape were gotten by calcinating the precursor. The physicochemical features of the octahedral...
The amorphous Co3O4 nanostructure, which adopted sodium hexametaphosphate as structure-directing agent, has been successfully synthesized in large scale via two steps: preparation of the precursor and the calcination process. The results of X-ray diffraction indicate that the prepared materials are mainly composed of Co3O4; the formless Co3O4 nanoplate with loose structures is observed by scanning...
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