2026-04-20T13:01:29Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/102992025-03-11T01:05:30Zcom_10259_5822com_10259_5086com_10259_2604col_10259_5823

Chen, Shiqian Li, Zheng Huang, Po‐Han Ruiz Fernández, Virginia Su, Yingchun Fu, Yujie Alesanco, Yolanda Malm, B. Gunnar Niklaus, Frank Li, Jiantong Droplet-based electrcity generators Full printing Microsupercapacitor arrays On-paper electronics PEDOT:PSS 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. 2025-03-10 2025-03-10 2024-03 info:eu-repo/semantics/article 2198-3844 http://hdl.handle.net/10259/10299 10.1002/advs.202400697 2198-3844 eng Advanced Science. 2024, V. 11, n. 22, p. 2400697 https://doi.org/10.1002/advs.202400697 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional Wiley