Flexible fluorinated graphite foils with high contents of the (CF) phase for slow neutron reflectors.

In order to prepare self-standing and flexible slow neutron reflectors made of graphite fluoride (GF) with high contents of (CF) structural phase, graphite foils of different thicknesses were used as starting materials for gas (F)/solid fluorination. The maximal interlayer distance of GF was obtained with this phase thanks to the stacking sequence FCCF/FCCF; this is mandatory for the efficient reflection of slow neutrons. 71 and 77% of the (CF) phase were achieved for graphite foils with thicknesses of 1.

An innovative synthesis of carbon-coated TiO nanoparticles as a host for Na intercalation in sodium-ion batteries.

In this work, an innovative route to synthesize an anatase TiO@C composite is presented. The synthesis was conducted using a soft chemistry microwave-assisted method using titanium(IV) butoxide as a titanium precursor. The residual (un)converted titanium precursor remaining after TiO synthesis was used as a carbon precursor and thermally treated under H to obtain nanoparticles of the TiO@C composite.

Synthesis and superconducting properties of CaC.

Among the superconducting graphite intercalation compounds, CaC exhibits the highest critical temperature =11.5 K. Bulk samples of CaC are obtained by immersing highly oriented pyrographite pieces in a well-chosen liquid Li-Ca alloy for 10 days at 350 °C.

Electronic structure and charge transfer in the ternary intercalated graphite beta-KS0.25C3.

The electronic structure of the ternary intercalated graphite beta-KS(0.25)C3 is studied by means of a first-principles density functional theory approach. The nature of the partially filled bands is analyzed, and the K sublayers of the intercalate are shown to have an important contribution to the Fermi surface.