Layered Si₂Te₃-based anodes for high-performance Li-ion batteries.

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Silicon-based anodes are crucial for high-performance lithium-ion batteries (LIBs) due to their high theoretical capacity.
• However, silicon anodes suffer from poor cycling stability and low conductivity, limiting their practical application.
• Developing advanced anode materials is essential to overcome these limitations.

Purpose of the Study:

• To develop a scalable solid-state synthesis method for Si₂Te₃ and its carbon composite (Si₂Te₃@C).
• To evaluate the electrochemical performance of Si₂Te₃@C as an anode material for LIBs.
• To address the challenges associated with silicon-based anodes in LIBs.

Main Methods:

• Scalable solid-state synthesis was employed to prepare Si₂Te₃ and Si₂Te₃@C.
• Electrochemical performance was characterized using techniques such as cyclic voltammetry and galvanostatic charge-discharge cycling.
• Cycling stability and rate capability were systematically investigated.

Main Results:

• The scalable solid-state synthesis successfully produced Si₂Te₃@C.
• The Si₂Te₃@C composite demonstrated high reversible capacity.
• Excellent cycling stability and improved rate capability were observed for the Si₂Te₃@C anode.
• The material showed promising performance for high-performance LIB anodes.

Conclusions:

• The developed scalable solid-state synthesis is effective for producing Si₂Te₃@C.
• Si₂Te₃@C is a promising anode material for next-generation LIBs, offering enhanced electrochemical performance.
• This work contributes to the advancement of silicon-based anode technology for energy storage applications.