Lowering of Proton and Deuteron Mean Kinetic Energy in the LiTFSI Water-in-Salt Electrolyte System.

ABSTRACT: Water-in-salt electrolytes have emerged as promising materials for energy storage devices, significantly extending the electrochemical stability window of water through confinement within a salt matrix. While the structure and distribution of water molecules in these systems is becoming increasingly better characterized, the molecular nature and energetics of water present a greater challenge. Measurement of the quantum kinetic energy of light atoms is a sensitive probe of their environment, reflecting the potential experienced by the atoms and inclusive of their zero-point energy. It is found that the mean kinetic energy of the proton and deuteron in the archetypal water-in-salt electrolyte system, LiTFSI-H₂O, decreases as a function of salt concentration. This indicates that w

SUBMITTER: Zhang M 

PROVIDER: S-EPMC12927015 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature