Abstract
Improving the proton transport in polymer electrolytes impacts the performance of next-generation solid-state batteries. However, little is known about proton conductivity in nonaqueous systems due to the lack of an appropriate level of fundamental understanding. Here, we studied the proton transport in small molecules with dynamic hydrogen bonding, 1,2,3-triazole, as a model system of proton hopping in a nonaqueous environment using incoherent quasi-elastic neutron scattering. By using the jump-diffusion model, we identified the elementary jump-diffusion motion of protons at a much shorter length scale than those by nuclear magnetic resonance and impedance spectroscopy for the estimated long-range diffusion. In addition, a spatially restricted diffusive motion was observed, indicating that proton motion in 1,2,3-triazole is complex with various local correlated dynamics. These correlated dynamics will be important in elucidating the nature of the proton dynamics in nonaqueous systems.
| Original language | English |
|---|---|
| Pages (from-to) | 1544-1549 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry B |
| Volume | 128 |
| Issue number | 6 |
| DOIs | |
| State | Published - Feb 15 2024 |
Funding
This work was supported as part of Fast and Cooperative Ion Transport in Polymer-Based Materials (FaCT), an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences. Work at ORNL’s Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. DOE. The neutron experiment at the Materials and Life Science Experimental Facility of the J-PARC was performed under a user program (proposal no. 2023A0099).
| Funders | Funder number |
|---|---|
| Scientific User Facilities Division | |
| U.S. Department of Energy | 2023A0099 |
| Office of Science | |
| Basic Energy Sciences | |
| Oak Ridge National Laboratory | |
| Find A Cure Today Breast Cancer Foundation |
