A Guanidium Salt as a Chaotropic Agent for Aqueous Battery Electrolytes

14 September 2023, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

This study investigates a salt design principle for aqueous battery electrolytes by combining chaotropic ions, guanidium cations (Gdm) and bis(trifluoromethanesulfonyl)imide anions (TFSI), forming GdmTFSI. This salt's crystal structure was solved via single-crystal X-ray diffraction and characterized using Fourier-transform infrared spectroscopy. Study reveals that GdmTFSI salt disrupts the hydrogen bonding network of aqueous solutions, impacting water reactivity at electrochemical interfaces.

Keywords

Aqueous
Electrolyte

Supplementary materials

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Description
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Supporting Information
Description
Methods and Materials, Crystal Structure, Further Figures
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