Solid State Hydrogen storage volumes

[patriklouko]

I am trying to figure out what the actual efficiency of solid state hydrogen storage is.

So how many kg of hydrogen can you store in a Xcm3 of metal hybride solid state storage.

I was trying to find a conversion and only found a metric that was 500NL in a specific device that had some dimensions.

Or if anybody knows of good practical solutions that I could refer to, much appreciated.

Basically I a trying to find how much volume a 4kg (of hydrogen) solid state storage solution would take? Application is a car. I'm trying to convert an old Audi A2 into a lion + hydrogen. Yes still in the early drawing board, but I have the car.

 

[BigJDubs]

Unfortunately, the exact efficiency of solid state hydrogen storage depends on a variety of factors such as the type of material used for storing, the temperature and pressure of the storage, and the method of storage. Generally, the most efficient solid state hydrogen storage systems have a volumetric density of up to 6-7 kg/m3. However, this is only achievable when storing hydrogen at temperatures below -253°C and pressures above 350 bar. At more moderate temperatures and pressures, the volumetric density of a solid state hydrogen storage system can range anywhere from 0.2-0.5 kg/m3. Therefore, a 4kg hydrogen storage system would require a volume of at least 8-20m3 depending on the temperature and pressure of the storage.