Nickel-metal hydride batteries. These batteries store and release electricity using a hydrogen-absorbing alloy for the negative electrode, and nickel

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Nickel-metal hydride batteries. These batteries store and release electricity using a hydrogen-absorbing alloy for the negative electrode, and nickel oxide as the positive electrode. Because this electrochemical reaction is reversible, these batteries can be recharged by attaching them to a power supply. These specific batteries are the AA size commonly used in modern electronic equipment.

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Photo credit: © MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
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