Solid–Gas Thermochemical Energy Storage Materials and Reactors for Low to High-Temperature Applications: A Concise Review

Thermochemical energy storage materials and reactors have been reviewed for a range of temperature applications. For low-temperature applications, magnesium chloride is found to be suitable candidate at temperatures up 100 °C, whereas calcium hydroxide identified appropriate medium-temperature ranging from 400 °C 650 °C. the high-temperature (750–1050 °C), oxides cobalt, manganese, copper are redox behaviour required thermochemical heat storage. However, some these suffer low thermal conductivities, agglomeration, cyclability and, therefore, require further improvements. The concept enhancing conductivities through additives such as nanomaterials has encouraging. From an operational point view, fluidized-bed perform better than fixed- moving-bed due particle interactions. There is, however, need reaction bed developed toward achieving optimum mass transfers. Agitated shown encouraging results suggested exploration. A combination computational tools can facilitate in-depth understanding dynamics.