LATENT HEAT STORAGE MATERIAL

: The invention concerns a latent heat storage material in the form of a composite material consisting of a phase-change material to store latent heat and graphite flakes incorporated within it to improve the thermal conductivity- The graphite flakes are characterised by a high aspect ratio and a high anisotropy of thermal conductivity- The volume content of graphite flakes in the latent heat storage material according to the invention is between 10 and 40 %. The composite material can be obtained by mixing the components or infiltrating a bed containing graphite flakes with a liquid phase-change material. The graphite flakes are preferably aligned during mixing with the phase-change material by shaking or tamping, etc., so that the thermal conductivity in the direction that is favourable for the individual application is maximised.