Electrochemically-driven actuators: from materials to mechanisms and from performance to applications

Area of Science:

• Materials Science
• Robotics Engineering
• Electrochemistry

Background:

• Soft actuators are crucial for converting energy into mechanical motion across various fields.
• Electrically driven actuators (EC actuators) utilize ion diffusion or intercalation for volume changes, offering precise control and low energy consumption.
• These actuators mimic muscle latching capabilities, making them ideal for advanced applications.

Purpose of the Study:

• To comprehensively review EC actuators, classifying them by material, mechanism, configuration, and application.
• To elucidate the driving mechanisms, their interconnections, and the relationships between materials, mechanisms, and performance.
• To analyze current and emerging materials, identify innovation opportunities, and discuss challenges in optimization and scaling.

Main Methods:

• Literature review and analysis of existing research on EC actuators.
• Classification of EC actuators based on material types, driving mechanisms, and configurations.
• In-depth examination of conventional and novel EC actuator materials and their performance characteristics.

Main Results:

• EC actuators offer precise deformation control and energy-efficient latching capabilities.
• Diverse material types and driving mechanisms contribute to varied actuator performances.
• Significant potential exists for material innovation and performance enhancement.

Conclusions:

• EC actuators represent a rapidly advancing field with broad applicability in soft robotics and aerospace.
• Understanding material-mechanism-performance interdependencies is key to future development.
• Further research into novel materials and scalable production is essential for realizing the full potential of EC actuators.