- This fuel cell is a test version of the electric-power generating device used on the two-astronaut Gemini spacecraft during seven missions in 1965-66. It was run for over 1000 hours to demonstrate long-duration functioning. A fuel cell is like a battery, in that it uses a chemical reaction to create an electrical current. Unlike a battery, a fuel cell will continue to generate a current as long as the reactants are supplied. The Gemini fuel cell used liquid oxygen and liquid hydrogen to generate electricity, with water as a byproduct. Oxygen and hydrogen molecules reacted and combined across a "proton exchange membrane," a thin permeable polymer sheet coated with a platinum catalyst.
- The Gemini program pioneered the use of fuel cells in space, and a similar technology was subsequently used in the Apollo and Space Shuttle programs. General Electric, the manufacturer, gave this artifact to the Smithsonian.
- Data Source
- National Air and Space Museum
- General Electric Company
- Credit Line
- Gift of General Electric Company
- Non-Magnetic White Meatl
- Copper Alloy
- Ferrous Alloy
- Overall: 47 x 37.5 x 63.5cm (18 1/2 x 14 3/4 x 25 in.)
- SPACECRAFT-Crewed-Electrical Power
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