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Updated: Jun 4, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Manganese electrode for all-solid-state fluoride batteries.

Atsushi Inoishi1,2, Naoko Setoguchi1, Megumi Motoyama1

  • 1Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga 816-8580, Japan. inoishi@cm.kyushu-u.ac.jp.

Chemical Communications (Cambridge, England)
|January 2, 2025
PubMed
Summary

Manganese trifluoride (MnF3) shows promise as an electrode material for solid-state fluoride batteries, demonstrating a high initial discharge capacity of 535 mA h g-1 through reversible defluorination and fluorination processes.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • All-solid-state fluoride batteries offer enhanced safety and energy density.
  • Developing novel electrode materials is crucial for advancing battery performance.
  • Manganese compounds are explored for their potential in electrochemical applications.

Purpose of the Study:

  • To evaluate manganese trifluoride (MnF3) as a cathode material for all-solid-state fluoride batteries.
  • To investigate the electrochemical behavior of MnF3 during charge-discharge cycles.
  • To confirm the reversibility of fluorination and defluorination processes involving manganese.

Main Methods:

  • Electrochemical testing of MnF3 as an electrode material.
  • Charge-discharge measurements to assess capacity and cycling stability.
  • Analysis to confirm the oxidation state changes of manganese during battery operation.

Main Results:

  • MnF3 exhibited an initial discharge capacity of 535 mA h g-1.
  • Manganese species underwent reversible reduction and oxidation.
  • Metallic manganese was successfully and reversibly fluorinated and defluorinated.

Conclusions:

  • MnF3 is a viable electrode material for all-solid-state fluoride batteries.
  • The observed capacity is attributed to the reversible fluoride conversion reactions.
  • Further research can optimize MnF3-based battery performance.