A cathode containing nanoparticles made from cobalt, cobalt oxide and a carbon-based outer shell improved the performance of a zinc-air battery. Credit: © 2016 A*STAR Institute of Materials Research and Engineering
Nanoparticles containing 3 different layers of material can help to boost the performance of a zinc-air battery, A*STAR researchers have found. Zinc-air batteries are cheap, have a high energy density, and last for a very long time. Their use of a water-based electrolyte makes them safer than other batteries, so they’re often found in medical applications, such as hearing aids and heart monitoring devices.
The battery’s negative electrode contains zinc metal, which gives up electrons when it reacts with hydroxide ions in the electrolyte...
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