Using first-principles calculations, we describe and compare atomistic lithiation, sodiation, and magnesiation processes in black phosphorous with a layered structure similar to graphite for Li-, Na-, and Mg-ion batteries because graphite is not considered to be an electrode material for Na- and Mg-ion batteries. The three processes are similar in that an intercalation mechanism occurs at low L...

Orientation dependencies of FeK, BrK EXAFS and XANES spectra have been measured for intercalated compounds of the composition CZF, *yA (X = 1 . A= Brz, BrF3, FeBr3, Fe(AA)3, FeCl3) synthesized by dityusion from solutions. An approach has been developed which allows determination of the ranges of the orientation angles of T-shaped BrF3 molecules tiom XANES spectra. The values of the orientation ...

Volumetric adsorption and quasielastic neutron scattering are used to study the diffusion and thermodynamics of sorbed H2 in the graphite intercalation compound KC24. A sorption enthalpy of 8.5 kJ/mol at zero coverage is determined from H2 adsorption isotherms. From measurements of total elastic-neutron-scattering intensity as a function of temperature, a melting transition of the H2 adsorbate ...

Few-layer graphene has been prepared by electrochemical intercalation of graphite cathode using Na/ dimethyl sulfoxide complexes as intercalation agent. By adding thionin acetate salt into the electrolyte, the exfoliated graphite is stabilized and further exfoliated into few-layer graphene. Raman and X-ray photoelectron spectra indicate that the graphene material has lower content of defects an...

In this article, we present a large-area synthesis of carbon microtubes (CMTs) with internal diameters of ∼1.5 μm and wall thicknesses on the order of 50 nm and their lithium ion intercalation and deintercalation properties for the first time. The results show that CMTs exhibit a good capacity retention of 443 mAh g-1 after 20 cycles, higher than the theoretical capacity of graphite and ∼1.5 ti...