Electrolyte contact changes nano-Li₄Ti₅O₁₂ bulk properties via surface polarons.

ABSTRACT: It is of general interest to combine the faradaic processes based high energy density of a battery with the non-faradaic processes based high power density of a capacitor in one cell. Surface area and functional groups of electrode materials strongly affect these properties. For the anode material Li₄Ti₅O₁₂ (LTO), we suggest a polaron based mechanism that influences Li ion uptake and mobility. Here we show electrolytes containing a lithium salt induce an observable change in the bulk NMR relaxation properties of LTO nano particles. The longitudinal ⁷Li NMR relaxation time of bulk LTO can change by almost an order of magnitude and, therefore, reacts very sensitively to the cation and its concentration in the surrounding electrolyte. The reversible

SUBMITTER: Schleker PPM 

PROVIDER: S-EPMC10247714 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature