Wearable Biosupercapacitor: Harvesting and Storing Energy from Sweat

This work demonstrates the first example of sweat-based wearable and stretchable biosupercapacitors (BSCs), capable generating high-power pulses from human activity. The all-printed, dual-functional, conformal BSC platform can harvest store energy sweat lactate. By integrating harvesting storage functionalities on same footprint a single epidermal device, new system deliver be rapidly self-charged by bioenergy conversion lactate generated activity while simplifying design fabrication. mechanical robustness conformability device are realized through island-bridge patterns strain-enduring inks. enhanced capacitance is synergistic effect carbon nanotube ink with electrodeposited polypyrrole anode porous cauliflower-like platinum cathode. In presence lactate, shows high power in pulsed output stable cycling performance. Furthermore, long after perspiration stopped. self-charging hybrid obtained 1.7 mW cm?2 vitro, 343 µW body during exercise, suggesting considerable potential as source for next generation electronics.