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Meeting 2027 TMS Annual Meeting & Exhibition
Symposium 2D Materials – Preparation, Properties, Modeling & Applications
Presentation Title Resolving the V2O5 Xerogel Framework: Interlocked Layer Architecture and Crystalline Nanoconfined Water
Author(s) Sarbajeet Chakraborty, Yu-Hsiang Chiang, Sarbajit Banerjee
On-Site Speaker (Planned) Sarbajeet Chakraborty
Abstract Scope Hydrated V2O5 gels have long been recognized as hosts for ion intercalation, yet the atomic structure of the widely used xerogelphase has remained unresolved. Early structural models proposed either corrugated single V2O5 layers or bilayer motifs. Total scattering studies supported the bilayer picture, identifyingV2O5 slabs built from [VO5] square pyramids separated by water and stacked with turbostratic disorder. We report the first single-crystal structure of the V2O5 xerogel. The material consists of interlocked [V4O10] slabs separated by a single, highly ordered layer of nanoconfined water. Its crystallinity provides a defined environment for probing ion desolvation, key step that often limits the insertion of divalent cations and ions in aqueous media. The ordered water layer may lower desolvation barriers and create pathways toward pseudocapacitive storage for Li, Na, Ca, and Mg. These findings establish a structural foundation for understanding hydration-driven intercalation phenomena and open new opportunities for designing water-mediated charge-storage materials.
Proceedings Inclusion? Planned:
Keywords Energy Conversion and Storage, Sustainability, Characterization

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