Mitsubishi FUSO signs MoU in the field of liquid hydrogen refueling technology
The sLH2 process reduces and simplifies the equipment of the fueling station, thereby reducing investment costs. It also requires significantly less energy which reduces the operational cost of the fueling station. The sLH2 refueling process was originally developed by Daimler Truck and Linde Engineering and is currently being discussed by the relevant parties with a view to developing ISO standardization.

Mitsubishi FUSO has recently signed MoU with Japanese player Iwatani Corporation in order to jointly develop subcooled liquid hydrogen (sLH2) refueling technology. Indeed, compared to gaseous hydrogen, sLH2 allows for higher storage density, greater range, faster refueling, lower costs and superior energy efficiency.
Liquid hydrogen refueling technology: what are we talking about?
Technically speaking, the sLH2 refueling process uses a pump to slightly increase the pressure of the liquid hydrogen, making it subcooled. Due to this pressure, the boil-off gas in the vehicle tank is re-liquified, eliminating the need to discharge the boil-off gas. The sLH2 process reduces and simplifies the equipment of the fueling station, thereby reducing investment costs. It also requires significantly less energy which reduces the operational cost of the fueling station. The sLH2 refueling process was originally developed by Daimler Truck and Linde Engineering and is currently being discussed by the relevant parties with a view to developing ISO standardization.
FUSO parent company Daimler Truck has already developed the Mercedes-Benz GenH2 Truck, a fuel cell heavy-duty prototype that uses liquid hydrogen, and began customer trials of this truck in 2024. Daimler Truck also produces fuel cell systems for heavy-duty trucks through its joint venture with the Volvo Group, cellcentric.