Triboiontronics with temporal control of electrical double layer formation

Xiang Li, Roujuan Li, Shaoxin Li, Zhong Lin Wang () and Di Wei ()
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Xiang Li: Chinese Academy of Sciences
Roujuan Li: Chinese Academy of Sciences
Shaoxin Li: Chinese Academy of Sciences
Zhong Lin Wang: Chinese Academy of Sciences
Di Wei: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: Abstract The nanoscale electrical double layer plays a crucial role in macroscopic ion adsorption and reaction kinetics. In this study, we achieve controllable ion migration by dynamically regulating asymmetric electrical double layer formation. This tailors the ionic-electronic coupling interface, leading to the development of triboiontronics. Controlling the charge-collecting layer coverage on dielectric substrates allows for charge collection and adjustment of the substrate-liquid contact electrification property. By dynamically managing the asymmetric electrical double layer formation between the dielectric substrate and liquids, we develop a direct-current triboiontronic nanogenerator. This nanogenerator produces a transferred charge density of 412.54 mC/m2, significantly exceeding that of current hydrovoltaic technology and conventional triboelectric nanogenerators. Additionally, incorporating redox reactions to the process enhances the peak power and transferred charge density to 38.64 W/m2 and 540.70 mC/m2, respectively.

Date: 2024
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DOI: 10.1038/s41467-024-50518-3

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