Damage-tolerant stretchable ionic conductors.

Area of Science:

• Materials Science
• Biomaterials Engineering
• Robotics

Background:

• Stretchable ionic conductors are crucial for soft robotics and human-machine interfaces due to their skin-like integration.
• Their inherent softness, while beneficial for integration, makes them vulnerable to mechanical damage and environmental degradation.
• This compromises their stability and long-term reliability in practical applications.

Purpose of the Study:

• To review and categorize recent strategies for designing damage-tolerant stretchable ionic conductors.
• To emphasize the role of condensed structure evolution in achieving high damage resistance.
• To highlight bio-inspired heterogeneous network designs for improved mechanical robustness.

Main Methods:

• Categorization of damage-tolerance strategies for stretchable ionic conductors.
• Analysis of condensed structure tunability and evolution.
• Highlighting bio-inspired heterogeneous network designs using viscoelastic polymers.

Main Results:

• Identified diverse mechanical damages (fractures, tears, impacts) and environmental factors (heat, freezing) affecting conductors.
• Emphasized the tunability of condensed structures for enhanced damage resistance.
• Demonstrated that bio-inspired heterogeneous networks with viscoelastic polymers effectively balance softness and damage tolerance.

Conclusions:

• Advancements in mechanical robustness are crucial for durable soft devices.
• Bio-inspired heterogeneous designs offer a promising approach to overcome the softness-damage tolerance trade-off.
• These developments pave the way for a new generation of reliable and resilient soft electronic systems.