A Novel Open-Framework Cu-Ge-Based Chalcogenide Anode Material for Sodium-Ion Battery

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Open-framework chalcogenides are explored for sodium-ion batteries (SIBs) due to their ion conductivity.
• Developing novel anode materials is crucial for advancing SIB technology.

Purpose of the Study:

• To synthesize and characterize a novel open-framework Cu-Ge-based chalcogenide (CGSe) for SIB anodes.
• To evaluate the electrochemical performance of CGSe as an anode material for SIBs.

Main Methods:

• Synthesis of [Cu 8 Ge 6 Se 19 ](C 5 H 12 N) 6 (CGSe) open-framework chalcogenide.
• Electrochemical testing of CGSe as an anode in sodium-ion batteries.

Main Results:

• The synthesized CGSe material demonstrated a high reversible capacity of 463.3 mAh g -1 .
• CGSe exhibited excellent rate performance and good cycling stability as a SIB anode.
• This study is the first to report the energy storage application of CGSe in SIBs.

Conclusions:

• Open-framework Cu-Ge-based chalcogenides are promising anode materials for sodium-ion batteries.
• The developed CGSe material offers a new avenue for high-performance energy storage solutions.
• This research expands the application scope of open-framework chalcogenides in battery technology.