A guanidium salt as a chaotropic agent for aqueous battery electrolytes.

John Brown Juan D Forero-Saboya Benoît Baptiste Martin KarlsmoGwenaëlle RousseAlexis Grimaud

Published in: Chemical communications (Cambridge, England) (2023)

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.

Keyphrases

ionic liquid
crystal structure
solid state
high resolution
magnetic resonance
mass spectrometry
computed tomography
contrast enhanced
liquid chromatography
electron microscopy