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Updated: Apr 23, 2026

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A Layer-Structured GeBi4Te7 Anode for Na-Ion Batteries.

Zhiming Jia1, Jianjun Li1, Ziyu Jia1

  • 1Key Laboratory of Jiangxi Province for Special Optoelectronic Artificial Crystal Materials, College of Chemistry and Chemical Engineering, Jinggangshan University, 343009 Ji'an, China.

ACS Applied Materials & Interfaces
|April 22, 2026
PubMed
Summary
This summary is machine-generated.

A new layered ternary GeBi4Te7 anode material offers high capacity and stable cycling for sodium-ion batteries. Synthesized using ball milling, it shows excellent performance for large-scale energy storage and electric vehicles.

Keywords:
GeBi4Te7anode materialbismuth-based anodelayered structuresodium-ion batteries

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Sodium-ion batteries are crucial for large-scale energy storage and electric vehicles.
  • Developing high-capacity, stable anode materials for sodium-ion batteries is a key challenge.

Purpose of the Study:

  • To synthesize and characterize a novel layered ternary GeBi4Te7 anode material.
  • To evaluate its electrochemical performance for sodium-ion battery applications.

Main Methods:

  • Facile high-energy ball milling synthesis.
  • Electrochemical testing including capacity, cycling stability, and Coulombic efficiency measurements.
  • Investigation of the sodium-ion reaction mechanism.

Main Results:

  • GeBi4Te7 exhibits a layered structure with 2D channels for rapid ion transport.
  • Achieved a high reversible specific capacity of 449.4 mA h g⁻¹ at 1 A g⁻¹.
  • Demonstrated excellent cycling stability with 90.8% capacity retention after 7400 cycles.
  • High initial Coulombic efficiency of 96.4% was recorded.

Conclusions:

  • Layered ternary GeBi4Te7 is a promising anode material for sodium-ion batteries.
  • The material offers high capacity, stable cycling, and efficient sodium storage.
  • This work contributes to the exploration of multimetal tellurides for advanced energy storage solutions.