TY  - JOUR
A1  - Wojnarowska, Zaneta
A1  - Lange, Alyna
A1  - Taubert, Andreas
A1  - Paluch, Marian
T1  - Ion and proton transport in aqueous/nonaqueous acidic tonic liquids for fuel-cell applications-insight from high-pressure dielectric studies
JF  - ACS applied materials & interfaces / American Chemical Society
N2  - The use of acidic ionic liquids and solids as electrolytes in fuel cells is an emerging field due to their efficient proton conductivity and good thermal stability. Despite multiple reports describing conducting properties of acidic ILs, little is known on the charge-transport mechanism in the vicinity of liquid-glass transition and the structural factors governing the proton hopping. To address these issues, we studied two acidic imidazolium-based ILs with the same cation, however, different anions-bulk tosylate vs small methanesulfonate. High-pressure dielectric studies of anhydrous and water-saturated materials performed in the close vicinity of T-g have revealed significant differences in the charge-transport mechanism in these two systems being undetectable at ambient conditions. Thereby, we demonstrated the effect of molecular architecture on proton hopping, being crucial in the potential electrochemical applications of acidic ILs.
KW  - proton hopping
KW  - dielectric spectroscopy
KW  - high pressure
KW  - ion transport
KW  - acidic ionic liquids
Y1  - 2021
U6  - https://doi.org/10.1021/acsami.1c06260
SN  - 1944-8244
SN  - 1944-8252
VL  - 13
IS  - 26
SP  - 30614
EP  - 30624
PB  - American Chemical Society
CY  - Washington
ER  -