Comparison of Fuel-Cell Types

Table I-2 lists the fuel-cell-driven technologies that have been developed for military applications. The last column in the table provides current TRL and status.

TABLE I-2. Fuel Cell State of the Art

Type and Fuel Dry Weight Power level (Watts) Efficiency % Dry System Specific power (W/kg) Start up time (min) Mass for a 72-hr mission (kg) Comments
DMFC Methanol Water/methanol mix at T>40C 1.18 20–25 22.4 21 10 2.6 TRL 7 Soldier power source (field evaluation)
RDMFC Methanol 1.6 kg 50   31 30 18 TRL 6–7 Hybrid or stand-alone energy source (field evaluation)
SOFC Propane fuel 2.6 kg 50 50 19. 30 6.2 TRL 6–7 Hybrid or stand-alone power source (field evaluation)
DMFC Methanol/water mix 15 kg 300 22.4 20 10 Ops specific–would not be required to run continuously TRL 6–7 Squad battery charger and stand-alone power supply
RMFC Methanol 16.3 kg 300   18 30 Ops specific–would not be required to run continuously TRL 6–7 Squad battery charger and stand-alone power supply
SOFC Propane 16 kg 300 50 19 15 Ops specific–would not be required to run continuously TRL 6–7 Squad battery charger and stand-alone power supply


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