Abstract: There is provided a system for energy storage and CO2 capture. The system comprises CaO/CaCO3, a carbonator (1) adapted to react CaO with CO2 to produce CaCO3, at least one CaCO3 storage container (2) for receiving and storing the CaCO3 produced in the carbonator (1), wherein the CaCO3 storage container (2) is configured to be transportable such that the CaCO3 can be supplied to a geographical location (3) remote from the carbonator (1) for CO2 release.

Abstract: There is provided a system for energy storage comprising: a fluidized bed apparatus with an energy storage material, wherein the energy storage material is provided in volumes coated with an outer layer of solid particles of a different material, wherein the volumes have a largest size in the interval 1-1000 ?m and wherein the solid particles (5) have a largest size in the interval 1-500 nm. Advantages of the system include that structural changes in the energy storage material over time are minimized so that the energy storage material can be used over many cycles without any noticeable impairment. The heat transfer to and from the energy storage material is improved. The system can further be used for CO2 capture.

Abstract: There is provided a method for heat storage comprising charging by raising the temperature of a phase change material (PCM) above its melting temperature and discharging by lowering the temperature below its melting temperature, wherein the phase change material (PCM) is provided in particles (P) comprising a core (CPCM), said core (CPCM) comprising at least one phase change material (PCM), said core (CPCM) being coated with an outer layer (LPSMALL) of smaller particles (PSMALL) comprising at least one from graphite, graphite oxide, graphene, and graphene oxide. The particles (P) can be made smaller giving an efficient heat exchange. Their manufacture is easy and cost efficient. The flexible outer layer allows the core to expand and shrink. Corrosion is prevented allowing less expensive materials to be used in devices. The particles can be made self-lubricating.