Honda R&D is developing a regenerative fuel cell system that uses hydrogen produced in space to generate electricity, providing a sustainable source of power and breathable oxygen for future space missions.
In collaboration with Sierra Space and Tec-Masters, Honda will test its high-differential pressure water electrolysis system aboard the International Space Station (ISS), using solar-powered electricity to generate hydrogen and oxygen.
These gases will then be fed into a regenerative fuel cell to produce electricity, with water as the only byproduct. The water is recycled back into the electrolysis system, creating a closed-loop energy cycle.
During the lunar day, the electrolysis system operates using electricity generated by solar panels. At night, when the moon receives no sunlight, stored oxygen can be used to support breathable air for astronauts.
Under the demonstration project, Sierra Space will be the primary space mission integrator, working with NASA to transport materials on Sierra Space’s Dream Chaser spaceplane, while Tec-Masters will serve as the ISS technology expert.
Earlier this year, the Colorado-based Sierra Space completed a test campaign of its new liquid oxygen and liquid hydrogen-fuelled upper-stage engine at a US Air Force Base in California.
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