Stretchable biofuel cells use sweat to power wearable devices

Engineers have developed stretchable biofuel cells that extract energy from human sweat to power a range of wearable devices.
Biofuel cells island and bridge structureThe epidermal biofuel cells, which are claimed to generate 10 times more power per surface area than any existing wearable biofuel cells, are a major breakthrough in the field, which has been struggling to make devices that are stretchable enough and powerful enough.
Engineers from the University of California San Diego were able t