Poly(arylene ether nitrile) Based Dielectrics with High Energy Storage Properties: A Review

Area of Science:

• Materials Science
• Polymer Science
• Energy Storage

Background:

• Polymer-based nanocomposites are crucial for dielectric energy storage, offering tunable energy density and charge-discharge efficiency.
• Poly(arylene ether nitrile) (PEN) possesses excellent thermal stability, mechanical strength, and dielectric properties, making it ideal for high-performance energy storage devices.

Purpose of the Study:

• This review explores strategies to enhance the dielectric energy storage performance of PEN-based composites.
• It focuses on molecular engineering, microstructural design, and interface regulation for improved performance.

Main Methods:

• Review of molecular engineering approaches.
• Analysis of microstructural design strategies.
• Investigation of multiscale interface regulation mechanisms.
• Examination of thermal stretching for optimizing dielectric constant (εr) and breakdown strength (Eb).

Main Results:

• PEN-based composites show significant potential for high-performance dielectric energy storage.
• Strategies like molecular engineering and thermal stretching can optimize dielectric properties.
• Interface regulation is key to balancing dielectric/insulating properties.

Conclusions:

• Advancements in PEN-based composites are vital for miniaturizing and intellectualizing advanced pulse power equipment.
• Future research should focus on dynamic balance mechanisms and novel composite systems for high energy storage density and stability.