Skip to main content
Article
Compositional Tuning of Structural Stability of Lithiated Cubic Titania via a Vacancy-Filling Mechanism under High Pressure
Physical Review Letters
  • Hui Xiong, Boise State University
Document Type
Article
Publication Date
2-13-2013
Abstract
Experimental and theoretical studies on the compositional dependence of stability and compressibility in lithiated cubic titania are presented. The crystalline-to-amorphous phase transition pressure increases monotonically with Li concentration (from ∼17.5  GPa for delithiated to no phase transition for fully lithiated cubic titania up to 60 GPa). The associated enhancement in structural stability is postulated to arise from a vacancy filling mechanism in which an applied pressure drives interstitial Li ions to vacancy sites in the oxide interior. The results are of significance for understanding mechanisms of structural response of metal oxide electrode materials at high pressures as well as emerging energy storage technologies utilizing such materials.
Comments

For complete list of authors, please see article.

Copyright Statement

This is an author-produced, peer-reviewed version of this article. The final, definitive version of this document can be found online at Physical Review Letters, published by American Physical Society. Copyright restrictions may apply. DOI: 10.1103/PhysRevLett.110.078304

Citation Information
Hui Xiong. "Compositional Tuning of Structural Stability of Lithiated Cubic Titania via a Vacancy-Filling Mechanism under High Pressure" Physical Review Letters (2013)
Available at: http://works.bepress.com/hui_xiong/8/