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We propose that the Li anode can be protected by a Cu coating via the technique of magnetron sputtering. Cu has high electrical conductivity, mechanical strength, and chemical stability. Li deposition on Cu coating with a porous structure disperses the local current density and produces a uniform Li-ion flux, greatly suppressing growth of Li dendrites and the layer prevents Li from directly contacting...
Conductive carbon films (CF1) were made of carbonized filter paper and modified with titanium(Ti) and aluminum(Al) thin films deposited on their surface by radiofrequency magnetron sputtering to prepare carbon films CF2 and CF3 as functional interlayers for lithium-sulfur (Li-S) batteries, with the cathode material (S-AC) synthesized with elemental sulfur (S) and activated carbon (AC). Material characterization...
Porous carbon has high specific area and total pore volume but weak interaction with dissolved polysulfides. Conductive polar metal compound has strong chemical adsorption of polysulfides but difficult to attain high porosity to encapsulate sulfur series. Instead of efforts on the cathode, we prepared a composite made up of titanium nitride and three-dimensional micro-/mesoporous carbon by a facile...
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...
In this work, dipicolinic acid and quinolinic acid are employed as additives to improve the thermal stability and electrochemical performance for the positive electrolyte of vanadium redox flow battery (VRFB). Both additives can restrain the precipitation of V2O5 from V(V) electrolyte. The concentration of remained V(V) ions in electrolyte with 1 mol% quinolinic acid is 1.58 M at 40 °C after 90 h,...
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...
Cation-substituted LiNi0.8Co0.1Mn0.1O2 sample is synthesized from purified laterite lixivium, without any extraction process. ICP analysis shows that partial Cr, Mg, and Al element incorporate in the compound. XRD and Rietveld refinement shows that proper Cr, Mg, and Al co-substitution could lead to a synergistic reaction to form a kind of highly ordered layered LiNi0.8Co0.1Mn0.1O2 with low Ni/Li...
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