Electric eels provide a zap of inspiration for a new kind of power source
Battery-like devices mimic how a charge builds up in the animal’s cells
![hydrogel disks](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/12/121317_MT_eelpower_feat.jpg?fit=860%2C460&ssl=1)
IT’S ELECTRIC A new type of energy source made with hydrogel disks (shown) works a lot like the power-producing organs inside electric eels.
Thomas Schroeder and Anirvan Guha