Hydrogen-electric aircraft propulsion system developer ZeroAvia says it has achieved record-breaking performance while testing the high-temperature proton exchange membrane (HTPEM) systems in its hydrogen fuel cells.
According to ZeroAvia, early testing of the pressurized, 20-kilowatt HTPEM fuel cell stack at the company’s research and development facility in the UK demonstrated a specific power level of 2.5 kW/kg at the cell level, and the company expects to achieve power densities exceeding 3 kW/kg in the next two years. This will make the hydrogen fuel cells powerful enough to enable electric propulsion systems viable for large aircraft that seat more than 100 passengers, such as the Boeing 737 and Airbus A320 families, according to ZeroAvia.
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