Assertion: fuel cell's use | /r/HasProperty | confined to small applications
Facets:
value: because of the low energy density
type: CAUSE
value: because of the cost
type: CAUSE
value: because of time
type: CAUSE
Source sentences:
text: It is likely however that the use of metal hydride Hydrogen storage will be confined to small applications because of the low energy density and the cost and time needed to fill and extract the Hydrogen.