RT info:eu-repo/semantics/article
T1 Ultrafast Metal‐Free Microsupercapacitor Arrays Directly Store Instantaneous High‐Voltage Electricity from Mechanical Energy Harvesters
A1 Chen, Shiqian
A1 Li, Zheng
A1 Huang, Po‐Han
A1 Ruiz Fernández, Virginia
A1 Su, Yingchun
A1 Fu, Yujie
A1 Alesanco, Yolanda
A1 Malm, B. Gunnar
A1 Niklaus, Frank
A1 Li, Jiantong
K1 Droplet-based electrcity generators
K1 Full printing
K1 Microsupercapacitor arrays
K1 On-paper electronics
K1 PEDOT:PSS
K1 Química analítica
K1 Chemistry, Analytic
K1 Electroquímica
K1 Electrochemistry
AB 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 cm2 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.
PB Wiley
SN 2198-3844
YR 2024
FD 2024-03
LK http://hdl.handle.net/10259/10299
UL http://hdl.handle.net/10259/10299
LA eng
NO The authors acknowledge the financial support from the Swedish ResearchCouncil (Grant No. 2019–04731), the European Commission (Grant No.101070255, REFORM), and the Swedish Foundation for International Co-operation in Research and Higher Education (STINT, CH2017-7284).
DS Repositorio Institucional de la Universidad de Burgos
RD 14-mar-2025