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Wearable Biosupercapacitor: Harvesting and Storing Energy from Sweat

机译：可穿戴的BioSupercapacitor：收获和储存汗水的能量

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摘要

This work demonstrates the first example of sweat-based wearable and stretchable biosupercapacitors (BSCs), capable of generating high-power pulses from human activity. The all-printed, dual-functional, conformal BSC platform can harvest and store energy from sweat lactate. By integrating energy harvesting and storage functionalities on the same footprint of a single epidermal device, the new wearable energy system can deliver high-power pulses and be rapidly self-charged by bioenergy conversion of sweat lactate generated from human activity while simplifying the design and fabrication. The mechanical robustness and conformability of the device are realized through island-bridge patterns and strain-enduring inks. The enhanced capacitance of the BSC is realized by the synergistic effect of carbon nanotube ink with electrodeposited polypyrrole on the anode and of porous cauliflower-like platinum on the cathode. In the presence of lactate, the BSC shows high power in pulsed output and stable cycling performance. Furthermore, the wearable device can store energy and deliver high-power pulses long after the perspiration stopped. The self-charging hybrid wearable device obtained high power of 1.7 mW cm(-2) in vitro, and 343 mu W cm(-2) on the body during exercise, suggesting considerable potential as a power source for the next generation of wearable electronics.
机译：这项工作证明了一种基于汗的可穿戴和可伸缩的生物蛋白电容器（BSC）的第一例，能够产生来自人类活动的高功率脉冲。全印刷的双功能，保形BSC平台可以从汗液中收获和储存能量。通过将能量收集和储存功能集成在单个表皮装置的相同占地面积上，新型可穿戴能源系统可以通过人类活动产生的汗液乳液的生物能源转化迅速自充电，同时简化设计和制造。通过岛桥图案和应变持久性墨水实现装置的机械稳健性和相容性。通过碳纳米管油墨在阴极上的电沉积多吡咯和阴极上的多孔花椰菜样铂的协同作用实现了BSC的增强电容。在乳酸存在下，BSC在脉冲输出和稳定的循环性能下显示出高功率。此外，可穿戴设备可以在停止停止后长度储存能量并长时间提供高功率脉冲。自充电混合可穿戴装置在运动期间在体外获得1.7mM厘米（-2）的高功率，并且在运动期间体外343μW（-2），表明下一代可穿戴电子产品的电源相当大的潜力。

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