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Related Experiment Video

Updated: May 26, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
10:03

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Microstructural Densification of NASICON Solid Electrolytes Toward High-Performance Solid-State Sodium Batteries.

Poyil Aswathy1, Shruti Suriyakumar1, Manikoth M Shaijumon1

  • 1School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala, India.

Small (Weinheim an Der Bergstrasse, Germany)
|May 24, 2026
PubMed
Summary

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This study introduces sodium tellurite (NTO) as a low-temperature densifier for NASICON solid electrolytes. This method enhances ceramic density, enabling stable sodium plating and stripping for advanced solid-state batteries.

Area of Science:

  • Materials Science
  • Electrochemistry
  • Ceramics Engineering

Background:

  • NASICON-type oxide ceramics are promising sodium solid electrolytes but suffer from porosity and low density, hindering dendrite resistance.
  • High-temperature sintering is typically needed for densification, but achieving theoretical densities remains difficult.

Purpose of the Study:

  • To develop an efficient, low-temperature densification strategy for NASICON-type electrolytes.
  • To improve the density and ionic conductivity of oxide electrolytes for solid-state batteries.

Main Methods:

  • Utilized sodium tellurite (Na2TeO3, NTO) as a low-melting point (710°C) functional densifier.
  • Employed liquid-phase sintering at lower temperatures enabled by NTO's early melting.
  • Optimized NTO content (3 wt.%) for maximum density and performance.
Keywords:
densificationgrain boundaryliquid phase sinteringoxide solid electrolytessolid‐state sodium battery

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Last Updated: May 26, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
10:03

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy
07:20

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Published on: January 20, 2023

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Main Results:

  • Achieved 97% relative density in NASICON ceramics using 3 wt.% NTO.
  • Demonstrated a high room-temperature critical current density of 6 mA cm⁻².
  • Symmetric cells showed stable sodium plating/stripping for over 1500 hours.
  • Full cells with Na3V2(PO4)3 cathodes delivered 102 mAh g⁻¹ at 0.1C with excellent performance.

Conclusions:

  • Low-melting point NTO enables efficient, low-temperature densification of NASICON electrolytes.
  • This strategy significantly improves critical current density and cycling stability.
  • The approach offers a scalable route to high-density, dendrite-resistant solid-state batteries.