A wearable, disposable paper-based self-charging power system integrating sweat-driven microbial energy harvesting and energy storage devices
A wearable, disposable paper-based self-charging power system integrating sweat-driven microbial energy harvesting and energy storage devices
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DOI：
10.1016/j.nanoen.2022.107923
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发表时间：
2022-10-26
期刊：
影响因子：
17.6
通讯作者：
Choi, Seokheun
中科院分区：
文献类型：
--
作者：
Gao, Yang;Rezaie, Maryam;Choi, Seokheun
微生物燃料电池（MFC）技术不断突破其界限，并以意想不到的方式向前发展。将无毒、可储存、可形成孢子的细菌细胞整合到一个灵活的、一次性的纸质MFC平台中，为一次性、基于汗水的可穿戴设备提供了一条新途径。然而，即使是一次性或短期操作，作为可靠实用的集成可穿戴电源，MFC的性能仍然不足。这项工作展示了可穿戴的、基于汗水的、一次性的自充电纸的第一个例子，该纸集成了三个mfc作为能量收集器和一个固态超级电容器（SC）作为能量存储设备。通过在同一张纸上打印能量收集和存储功能，该系统的设计和制造可以革命性地简化，同时其灵活，可穿戴，一体化的纸质电子平台将符合皮肤。水平MFC和平面交叉数字SC器件很容易集成到一张纸上。该混合自供电系统可产生4 μ W/cm2和37 μ A/cm2的优异汗液能量，存储9.81 mF的优异能量，在100多次循环中表现出稳定的电容行为，并具有优异的自充电特性，可产生5.53 μ Ah的恒定放电。作为概念验证，该系统成功地为片上发光二极管（LED）供电。
Microbial fuel cell (MFC) technology is constantly pushing its boundaries and advancing in unexpected ways. Integrating non-toxic, storable, spore-forming bacterial cells into a flexible, disposable paper-based MFC platform provides a new route for powering single-use, sweat-based, wearable devices. Even for one-time or short-term operations, however, the MFC performance remains insufficient as an integrated wearable power source that is reliable and practical. This work demonstrates the first example of wearable, sweat-based, disposable self -charging power paper integrating three MFCs as an energy harvester and a solid-state supercapacitor (SC) as an energy storage device. By printing energy harvesting and storing functionalizes on the same piece of paper, the design and fabrication of the system can be revolutionarily simplified while its flexible, wearable, all-in-one papertronic platform will conform to the skin. Horizontal MFC and planar interdigitated SC devices are easily integrated into a single sheet of paper. This hybrid self-powered system generates an outstanding 4 mu W/cm2 and 37 mu A/cm2 from sweat, stores an excellent 9.81 mF of energy, demonstrates stable capacitive behavior for more than 100 cycles, and possesses superior self-charging characteristics as it can produce a constant discharge of 5.53 mu Ah. As a proof of concept, the system successfully powered an on-chip light-emitting diode (LED).