A gum-like lithium-ion battery based on a novel arched structure

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Stretchable electronics require flexible energy storage solutions.
• Existing stretchable batteries often have rigid components, limiting overall device durability.
• Component-level stretchability is crucial for robust performance in flexible devices.

Purpose of the Study:

• To develop a general strategy for creating highly stretchable lithium-ion batteries (LIBs).
• To investigate the electrochemical performance and stability of these LIBs under mechanical strain.
• To demonstrate the advantage of component-level stretchability in battery design.

Main Methods:

• Fabrication of LIBs with an arch structure and stretchable anode and cathode.
• Mechanical testing involving hundreds of stretching cycles at 400% strain.
• Electrochemical performance evaluation under stretched conditions.

Main Results:

• The developed LIBs exhibit remarkable and stable electrochemical performance.
• Consistent performance was maintained after hundreds of stretching cycles at 400% strain.
• Component-level stretchability proved key to the LIB's stable performance.

Conclusions:

• A general strategy for fabricating component-level stretchable LIBs was successfully established.
• The developed LIBs offer superior stability and performance compared to devices with rigid components.
• This work provides a critical design principle for next-generation flexible energy storage devices.