Industrial-scale metal hydride hydrogen compressors developed at the South African Institute for Advanced Materials Chemistry

Hydrogen refuelling station with integrated metal hydride compressor: Layout features and experience of three-year operation

“…More details about characterisation of the used MH material are presented in Ref. [9] and [14] (sample #5).…”

“…The above-mentioned publications were mainly focused on the layout of the onboard hydrogen storage system and performances of the forklift, and the features of the refuelling station (including the ones previously reported in Refs. [8,9]) were considered only briefly.…”

Development of a high-pressure Ti-Mn based hydrogen storage alloy for hydrogen compression

“…Although recent techno-economic analyses [15,16] predicted only a marginal lower capital cost for MHHCs compared to the mechanical compressors, MHHCs suggested to benefit from the significantly lower operation and maintenance costs with the possibility to achieve even more operational cost reduction by using waste heat. Several cost reduction and performance improvement methods for MHHCs are also proposed and the economic feasibility of the large-scale MHHCs are demonstrated for specific systems [16,17].…”

“…However, the amount of desorbed hydrogen was reduced for Ti content above 40 at.% due to the formation of very stable TiH 2 phase. Optimum hydrogen storage performance was reported by enhancing the stability of the C14 Laves phase during hydrogenation and adjusting lattice constants of the C14 Laves phase in off-stoichiometry TiMn 1.5 alloy [17].…”

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

“…It is promising to integrate MH TSC's in the infrastructure of hydrogen production which includes filling of composite (up to 700 atm) and steel (up to 150-200 atm) gas cylinders with pure hydrogen, at the productivity up to 20 Nm 3 h −1 . Though some recent publications [13][14][15] present information about development of industrial-scale metal hydride hydrogen compressors (discharge pressure up to 200 atm at 5-13 Nm 3 h −1 productivity), the published information is still scarce.…”