S/N

Hydrogen Storage Methods

Energy Efficiency

Energy Density

Lifetime

Response Time

Cost

1

Metal Hydrides

69%

244 kWh∙m−3

Less than 2000 hours

Fast

9.01 - 19.67 USD/kg (Ni Metal Hydride)

2

Liquid Hydrogen Storage (LHS)

About 40% - 50%

2359.30 kWh∙m−3

300 - 500 days

Fast

3.66 USD/kg in 2030

3

CGH2 for Type IV Vessel

>85%

3.3 - 1320 kWh∙m−3 (depends on compression strength)

Over 20 years

Fast

Starts from 466 USD/kg

4

Underground Hydrogen Storage

More than 60%

Can reach about 300,244 kWh∙m−3

20 - 40 years

Fast

1.61 USD/kg