Abstract: A latent heat storage device is formed with a carrier substrate formed of expanded graphite material. Phase change material is infiltrated in the graphite material. A thin graphite sheet provides for the functional heat conductivity into and out of the carrier substrate. After the phase change material (PCM) is infiltrated in the carrier substrate, a density of the infiltrated carrier substrate exceeds its starting density by a ratio of at least 3:1 or 4:1 or more. The volume dimensions of the infiltrated the carrier substrate remain substantially unchanged. In the alternative, the latent heat storage device may also have a PCM coating layer on a thin carrier substrate, wherein the phase change material is interspersed in a carrier matrix forming the PCM coating layer. The composite device may be very thin.

Abstract: A layered composite material which is suitable, in particular, for use in a redox flow battery, contains at least one layer of a textile fabric and at least one graphite-containing molded body which is obtained by a method in which graphite particles are mixed with at least one solid organic additive to form a mixture and the thus obtained mixed is then compressed.

Abstract: A graphite-containing molded body is obtained by a method in which graphite particles are mixed with at least one solid additive to form a mixture which contains at least one inorganic additive, a mixture consisting of an inorganic additive and an organic additive, or more than 10 wt. % of an organic additive and the thus obtained mixture is subsequently compressed. The at least one additive which is used contains particles having an average diameter of between 1 and 500 ?m, determined in accordance with the ISO 13320 standard.