Continuous Energy Harvesting and Motion Sensing from Flexible Electrochemical Nanogenerators: Toward Smart and Multifunctional Textiles
| Autor: | John Waugh, Kathleen Moyer, Cary L. Pint, Chuanzhe Meng, Janna Eaves-Rathert, Murtaza Zohair |
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| Rok vydání: | 2020 |
| Předmět: |
Nanotube
Materials science Surface Properties Polyesters General Physics and Astronomy 02 engineering and technology 010402 general chemistry Electric Capacitance 01 natural sciences 7. Clean energy Image stitching Motion Electric Power Supplies Humans General Materials Science Particle Size Coupling business.industry Nanotubes Carbon Textiles Continuous monitoring General Engineering Nanogenerator Electrochemical Techniques 021001 nanoscience & nanotechnology 0104 chemical sciences Power (physics) Electricity generation Optoelectronics 0210 nano-technology business Energy harvesting Ferrocyanides |
| Zdroj: | ACS nano. 14(2) |
| ISSN: | 1936-086X |
| Popis: | Here, we demonstrate the utilization of biocompatible Prussian blue (PB) active coatings onto polyester-carbon nanotube (CNT) threads to enable a fiber-based platform for both power harvesting and continuous motion sensing. First, we show experimental evidence supporting that the mechanistic power generating mechanical-electrochemical coupling in an electrochemical generator (ECG) is best achieved with K-ion insertion, in contrast to the expected preference for Li-ion insertion for batteries. We then construct KPB fibers and demonstrate power generation in an ECG device up to 3.8 μW/cm2 at low frequencies relevant to human motion in either an aqueous or polymer gel electrolyte media. Further, by stitching these yarns into gloves or arm sleeves, our results show the continuous monitoring of finger or arm motion, respectively, during slow and repetitive human motion. Overall, our work demonstrates an ECG platform that overcomes the performance and integration barriers toward combined textile integration and human motion sensing while leveraging common materials and understanding extending from alkali metal-ion batteries. |
| Databáze: | OpenAIRE |
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