A Real Energy Snack: Scientists Create Fully Edible, Dissolvable Battery for Medical Devices
The battery's components include riboflavin for the anode, quercetin for the cathode, and activated charcoal to increase electrical conductivity. The electrolyte is a water-based solution, and the separator is made from nori, a seaweed from sushi. The external contacts that transfer the electricity to another device are made of beeswax and gold.
Source: sputnikglobe.com