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Related Experiment Video

Updated: May 28, 2026

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
08:49

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Published on: December 4, 2014

Nanoscale Room-Temperature Na Dynamics in Layered Ruthenates Na1RuO3 and Na1.5RuO3.

Mohammad Hussein Naseef Assadi1,2

  • 1RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako 351-0198, Saitama, Japan.

Nanomaterials (Basel, Switzerland)
|May 26, 2026
PubMed
Summary

Sodium ion dynamics in layered ruthenium oxides were simulated using ab initio molecular dynamics. Higher sodium content in Na1.5RuO3 allows greater ion movement and potential migration, impacting battery cathode design.

Keywords:
AIMDNa diffusiondensity functional theorylayered materialsmetaGGAmolecular dynamics

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Last Updated: May 28, 2026

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
08:49

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Published on: December 4, 2014

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
10:51

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes

Published on: April 10, 2015

Synthesis and Evaluation of a Ruthenium-based Mitochondrial Calcium Uptake Inhibitor
07:12

Synthesis and Evaluation of a Ruthenium-based Mitochondrial Calcium Uptake Inhibitor

Published on: October 26, 2017

Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Computational Materials Science

Background:

  • Atomic-scale ionic motion is crucial for understanding layered transition-metal oxides.
  • Structural stability and electronic properties depend on ion transport mechanisms.

Purpose of the Study:

  • Investigate nanoscale sodium (Na) ion dynamics in Na1RuO3 and Na1.5RuO3.
  • Elucidate the nuanced mechanisms of Na mobility at the nanoscale.
  • Explore implications for sodium-ion battery cathode design.

Main Methods:

  • Room-temperature ab initio molecular dynamics simulations.
  • Utilized the r2SCAN + U computational level.
  • Analyzed atomic-scale ionic motion and transport pathways.

Main Results:

  • Observed pervasive rattling of Na ions in both compounds.
  • Na1.5RuO3 exhibited larger explored volumes and incipient migration compared to Na1RuO3.
  • Oxygen's redox contribution decreased significantly with increased Na content (43% to 24%).

Conclusions:

  • Tuning the local ionic environment in ruthenate frameworks controls charge compensation and dynamics.
  • Nanoscale insights into Na ion behavior are critical for designing advanced Na-ion battery cathodes.