Ultrafast Metal-Free Microsupercapacitor Arrays Directly Store Instantaneous High-Voltage Electricity from Mechanical Energy Harvesters.

Autor: Chen S; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Electronics and Embedded Systems, Electrum 229, Kista, 16440, Sweden., Li Z; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Electronics and Embedded Systems, Electrum 229, Kista, 16440, Sweden., Huang PH; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Micro and Nanosystems, Stockholm, SE-100 44, Sweden., Ruiz V; CIDETEC, Basque Research and Technology Alliance (BRTA), Po. Miramón 196, Donostia-San Sebastián, 20014, Spain., Su Y; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Electronics and Embedded Systems, Electrum 229, Kista, 16440, Sweden., Fu Y; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Electronics and Embedded Systems, Electrum 229, Kista, 16440, Sweden., Alesanco Y; CIDETEC, Basque Research and Technology Alliance (BRTA), Po. Miramón 196, Donostia-San Sebastián, 20014, Spain., Malm BG; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Electronics and Embedded Systems, Electrum 229, Kista, 16440, Sweden., Niklaus F; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Micro and Nanosystems, Stockholm, SE-100 44, Sweden., Li J; KTH Royal Institute of Technology, School of Electrical Engineering and Computer Science, Division of Electronics and Embedded Systems, Electrum 229, Kista, 16440, Sweden.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Jun; Vol. 11 (22), pp. e2400697. Date of Electronic Publication: 2024 Mar 19.
DOI: 10.1002/advs.202400697
Abstrakt: Harvesting renewable mechanical energy is envisioned as a promising and sustainable way for power generation. Many recent mechanical energy harvesters are able to produce instantaneous (pulsed) electricity with a high peak voltage of over 100 V. However, directly storing such irregular high-voltage pulse electricity remains a great challenge. The use of extra power management components can boost storage efficiency but increase system complexity. Here utilizing the conducting polymer PEDOT:PSS, high-rate metal-free micro-supercapacitor (MSC) arrays are successfully fabricated for direct high-efficiency storage of high-voltage pulse electricity. Within an area of 2.4 × 3.4 cm 2 on various paper substrates, large-scale MSC arrays (comprising up to 100 cells) can be printed to deliver a working voltage window of 160 V at an ultrahigh scan rate up to 30 V s -1 . The ultrahigh rate capability enables the MSC arrays to quickly capture and efficiently store the high-voltage (≈150 V) pulse electricity produced by a droplet-based electricity generator at a high efficiency of 62%, significantly higher than that (<2%) of the batteries or capacitors demonstrated in the literature. Moreover, the compact and metal-free features make these MSC arrays excellent candidates for sustainable high-performance energy storage in self-charging power systems.
(© 2024 The Authors. Advanced Science published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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