Li P, Braeuniger Y, Kunigkeit J, Zhou H, Vega MRO, Zhang E, Grothe J, Brunner E, Kaskel S (2022)
Publication Type: Journal article
Publication year: 2022
Book Volume: 61
Article Number: e202212250
Journal Issue: 50
Switchable supercapacitors (SCs) enable a reversible electrically-driven uptake/release of bioactive ions by polarizing porous carbon electrodes. Herein we demonstrate the first example of a bioactive ion-based switchable supercapacitor. Based on choline chloride and porous carbons we unravel the mechanism of physisorption vs. electrosorption by nuclear magnetic resonance, Raman, and impedance spectroscopy. Weak physisorption facilitates electrically-driven electrolyte depletion enabling the controllable uptake/release of electrolyte ions. A new 4-terminal device is proposed, with a main capacitor and a detective capacitor for monitoring bioactive ion adsorption in situ. Ion-concentration control in printed choline-based switchable SCs realizes switching down to 8.3 % residual capacitance. The exploration of adsorption mechanisms in printable microdevices will open an avenue of manipulating bioactive ions for the application of drug delivery, neuromodulation, or neuromorphic devices.
APA:
Li, P., Braeuniger, Y., Kunigkeit, J., Zhou, H., Vega, M.R.O., Zhang, E.,... Kaskel, S. (2022). Bioactive Ion-Based Switchable Supercapacitors. Angewandte Chemie International Edition, 61(50). https://doi.org/10.1002/anie.202212250
MLA:
Li, Panlong, et al. "Bioactive Ion-Based Switchable Supercapacitors." Angewandte Chemie International Edition 61.50 (2022).
BibTeX: Download