Abstract: An expanded graphite is derived from a graphitic or partially graphitic starting material selected from the group consisting of natural graphite, compressed expanded graphite, partially oxidized graphite and/or graphite fibers having a BET surface area of >30 m2/g. The expanded graphite is obtained by reaction of the starting material with substances capable of intercalation or mixtures of substances capable of intercalation to give a compound designated as an intercalation compound and subsequent expansion in plasma.

Abstract: A method for producing a latent heat storage material from a graphitic starting material selected from the group consisting of natural graphite, expanded graphite, and/or graphite fibers, and from a phase-changing material selected from the group consisting of sugar alcohols, water, organic acids and the mixtures thereof, aqueous salt solutions, salt hydrates, mixtures of salt hydrates, salt hydrates with paraffins, inorganic and organic salts and eutectic salt mixtures, clathrates and alkali metal hydroxides, as well as mixtures of these materials. The graphitic starting material is treated with a plasma before being impregnated with the phase-changing material. A latent heat storage material is produced according to the method.

Abstract: An expanded graphite is derived from a graphitic or partially graphitic starting material selected from the group consisting of natural graphite, compressed expanded graphite, partially oxidized graphite and/or graphite fibers having a BET surface area of >30 m2/g. The expanded graphite is obtained by reaction of the starting material with substances capable of intercalation or mixtures of substances capable of intercalation to give a compound designated as an intercalation compound and subsequent expansion in plasma.

Abstract: Among other things, a method for the production of a modified material, for example, a carbon material, is described, having the following steps: Generation of a high-frequency field in a chamber (2) of a plasmatron (1); introduction of a plasma gas into chamber (2); generation of a plasma with the plasma gas by the high-frequency field; and introduction of initial material into the plasma. In addition a plasmatron (1) is described for the production of a modified material (M), having: a chamber (2), at least one high-frequency inductor (3) disposed in at least one region of chamber (2), a gas supply line (10, 11) for introducing a plasma gas into the region of a high-frequency field generated by high-frequency inductor (3), and a material supply line (4) for blowing in initial material with a transport gas into the plasma generated by high-frequency inductor (3) with the plasma gas. Finally, it also describes a modified carbon material which is correspondingly produced.