Nickel-hydrogen Batteries
Nickel-hydrogen batteries are rechargeable electrochemical energy storage devices that use a nickel electrode, a hydrogen electrode, and an alkaline electrolyte. They are commonly used in space and astronautical engineering applications due to their high energy density, long cycle life, and ability to operate in extreme temperatures and vacuum environments. The nickel-hydrogen battery technology was first developed in the 1970s by NASA for use in space missions, and has since been used in a variety of spacecraft including the International Space Station and the Hubble Space Telescope.
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