Application of hydrides in hydrogen storage and compression: Achievements, outlook and perspectives

Thermodynamic features of metal hydride thermal sorption compressors and perspectives of their application in hydrogen liquefaction systems

“…In turn, the specific productivity of the TSC increases by 27%, with a simultaneous increase of efficiency by 8.5%. The detrimental effect of the dead space, however, becomes significant at high, above 30 MPa, discharge pressures [6,10].…”

“…Reversible intermetallic hydrides are able to repeatedly absorb and desorb gaseous hydrogen at different pressures, which depend on the temperature potential of the released/absorbed heat [2][3][4][5]. This feature forms a basis of thermo-chemical technology of hydrogen compression realised in a thermal sorption compressor (TSC) utilising metal hydrides (MHs), in which exothermic and endothermic processes of H 2 absorption and desorption in the MH are similar to processes of suction and discharge in a mechanical compressor [1,[6][7][8][9][10][11][12][13]. As a rule, the development of an MH TSC is preceded by its modelling aimed at the determination of the number of H 2 compression stages including proper selection of the MH materials to provide compression from p 1 = p min to p 2 = p max (specified by a customer) over an available temperature range, T 1 = T min … T 2 = T max [13][14][15][16], as well as optimisation of heat transfer performance in the MH beds in MH containers for hydrogen compression (generators-sorbers) to improve the dynamic characteristics of the TSC [14,[16][17][18].…”

Metal hydride hydrogen compressors for energy storage systems: layout features and results of long-term tests

“…Hydrogen energy storage systems are also important for the infrastructure supporting hydrogen fuelled vehicles, particularly at refuelling stations which require the compression and storage of hydrogen at pressures of several hundred atmospheres [3,4]. Backup power systems require efficient hydrogen storage and compression solutions as well [5,6].…”

“…hydrogen. In addition, the MH TSC does not contain moving parts that simplifies its design, increases reliability and eliminates noise and vibration [6,8,9].…”

“…Presently, there exist several practical applications of MH TSC's including the handling of hydrogen isotopes in the nuclear industry [8,10], cryo-coolers in space engineering [8,11], thermally driven actuators [8,12], and laboratory practice [6,9]. These compressors used in quite narrow, niche areas have low productivity and efficiency.…”