Accelerating ion/electron transport by engineering an indium-based heterostructure toward large and reversible...

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Indium oxide (In2O3) and indium sulfide (In2S3) are promising materials for energy storage.
• Heterostructures can offer synergistic properties for improved electrochemical performance.

Purpose of the Study:

• To investigate the electrochemical properties of In2O3/In2S3 heterostructures.
• To explore the transformation of the heterostructure into nanodots for enhanced stability and capacity.

Main Methods:

• Synthesis of In2O3/In2S3 heterostructures.
• Electrochemical testing including cyclic voltammetry and galvanostatic charge-discharge cycling.
• Material characterization to confirm nanodot formation.

Main Results:

• The In2O3/In2S3 heterostructure activates into homogeneous In2O3S3- nanodots, improving cycle stability.
• A high capacity of 1140 mA h g-1 was achieved at 0.1 A g-1 after 290 cycles.
• A reversible capacity of 900 mA h g-1 was maintained at 1 A g-1 after 600 cycles.

Conclusions:

• The transformation into nanodots is key to stabilizing the In2O3/In2S3 material.
• This material shows excellent potential for high-performance energy storage applications.