Poly(Ionic Liquids) and Ionogels for Electrochromic Devices: Material Design and Additive Manufacturing Strategies

Area of Science:

• Materials Science
• Nanotechnology
• Energy Storage

Background:

• Functional electrochromic devices (ECDs) are crucial for smart energy management in buildings, transportation, and electronics.
• Commercialization of ECDs is limited by complex designs, high costs, and slow switching.
• Additive manufacturing (AM), or 3D printing, presents a solution for complex structures and reduced production costs.

Purpose of the Study:

• To explore the synergistic integration of poly(ionic liquids) (PILs), ionogels, and AM for advanced ECDs.
• To address the limitations of current ECD fabrication methods.
• To provide design guidelines for optimizing PIL/ionogel-based ECDs fabricated via AM.

Main Methods:

• Review and synthesis of recent progress in PIL/ionogel-based ECDs.
• Analysis of structure-property-processing relationships for 3D-printed ECDs.
• Distillation of design guidelines for ink rheology, ionic conductivity, mechanical integrity, and printing modalities.

Main Results:

• PILs combined with ionogels are highly suitable for AM integration due to their ionic conductivity, stability, and tunable properties.
• AM enables the creation of complex ECD structures with enhanced design flexibility and potentially lower costs.
• Specific guidelines for optimizing ink formulation and printing processes for PIL/ionogel ECDs have been identified.

Conclusions:

• The synergistic integration of PILs, ionogels, and AM offers a promising roadmap for overcoming fabrication challenges in ECDs.
• This approach facilitates the scaling up of next-generation smart energy management devices.
• Optimized design and processing are key to realizing the full potential of these advanced ECDs.