GoKawiilMIT engineers build ingestible battery from digestible materials, tested in pigs
MIT researchers led by Giovanni Traverso developed a battery coated in a rice-paper-like material that can power swallowable medical devices and then be fully broken down and absorbed by the body. The team tested the battery in pigs by powering an RFID tag that transmits data from inside the body and a device that electrically stimulates the stomach to release hunger-regulating hormones. The work, published in Nature Chemical Engineering, replaces toxic metals, organic electrolytes and plastic casings found in conventional batteries with non-toxic alternatives like magnesium and molybdenum.