About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials – Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Carbon as Proton Storage Site in Ti3C2Tx during Electrochemical Protonation |
| Author(s) |
Ruocun Wang, Pol Sallés Perramon, Yuan Zhang, Paweł P. Michałowski, SangUk Han, Alexander I. Kolesnikov, Aleksandra Vojvodic, Jakub Drnec, Yury Gogotsi |
| On-Site Speaker (Planned) |
Ruocun Wang |
| Abstract Scope |
Energy storage materials’ ability to host ions and electrons is fundamental for their applications in batteries and pseudocapacitors. While many transition metal can accommodate electrons, only a few elements, like oxygen and chalcogens, can host cations. Even in MXenes, oxygen surface terminations are believed to enable redox activities and store protons. In this work, using inelastic neutron scattering (INS) and atomic-resolution secondary ion mass spectrometry (SIMS), we reveal that, in addition to the oxygen surface groups, intercalated protons are stored in the interstitial sites of the Ti3C2Tx MXene slab, forming C-H bonds. We further showed its effect on the crystal structure evolution using synchrotron-based grazing incident wide-angle X-ray scattering (GIWAXS) and pair-distribution function (PDF). Energetics of proton at various anion sites were assessed computationally. This work shows the possibility of carbon sublattices serving as proton storage sites, suggesting that 2D transition metal carbides should be considered for proton-based energy storage. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Nanotechnology, Characterization |