Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, 400030, China; Institute of Engineering Thermophysics, School of Energy and Powering Engineering, Chongqing University, Chongqing, 400030, China.
Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, 400030, China; Institute of Engineering Thermophysics, School of Energy and Powering Engineering, Chongqing University, Chongqing, 400030, China.
Biosens Bioelectron. 2022 Feb 15;198:113833. doi: 10.1016/j.bios.2021.113833. Epub 2021 Nov 24.
To meet the emerging power demand of microelectronic and electronic skin based sensing platform, enzymatic fuel cells have received increasing attention due to their good human's compatibility, easy integration and cost effectiveness. Herein, we use multi-walled carbon nanotube/naphthoquinone to modify the lactate oxidase bio-anode to facilitate the electron transfer between electrocatalytic active site and electrode support. Polyvinyl alcohol hydrogel serves as the separator and lactate container. The bio-anode, Pt/C cathode and hydrogel are assembled in layer-by-layer structure, which can successfully utilize pre-stored and external lactate from human's sweat to generate the electricity. It delivers a power-density of 62.2 ± 2.4 μW cm under bending/torsion conditions. Given that the broad substrate scope in sweat and easily assembled structure, it provides a plausible solution to power the miniaturized sensors and generic circuits.
为了满足微电子和电子皮肤感应平台不断增长的动力需求，酶燃料电池因其良好的生物兼容性、易于集成和成本效益而受到越来越多的关注。在此，我们使用多壁碳纳米管/萘醌修饰乳酸氧化酶生物阳极，以促进电催化活性位点和电极支撑体之间的电子转移。聚乙烯醇水凝胶用作分离体和乳酸容器。生物阳极、Pt/C 阴极和水凝胶以层层结构组装，可以成功地利用人体汗液中的预存储和外部乳酸来发电。在弯曲/扭转条件下，它可提供 62.2 ± 2.4 μW cm 的功率密度。鉴于其在汗液中的广泛底物范围和易于组装的结构，为为小型化传感器和通用电路提供了一种可行的供电解决方案。
