The DOE has set the ultimate goals for the lifespan of the fuel cell system under realistic operating conditions, of 8,000 hours for light vehicles, 30,000 hours for heavy trucks and 80,000 hours for distributed energy systems. Even with 30,000 operating hours, such a fuel cell is unlikely to last the entire life of the chassis.
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Expensive to manufacture due to the high cost of catalysts (platinum) Lack of infrastructure to support hydrogen distribution. Much of the fuel cell technology currently available is in the prototype phase and has not yet been validated.
The energy content of hydrogen by volume is low. This makes storing hydrogen a challenge because it requires high pressures, low temperatures, or chemical processes to store it in a compact way.