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3D Printable Polymer Electrolytes for Ionic Conduction based on Protic Ionic Liquids.

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Summary
This summary is machine-generated.

Researchers developed novel ionogels (IGs) from protic ionic liquids (PILs) and polymers. These materials exhibit promising ionic conductivity and ion mobility, enabling 3D printing for applications like ion-conductive membranes.

Keywords:
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Area of Science:

  • Materials Science
  • Electrochemistry
  • Polymer Chemistry

Background:

  • Protic ionic liquids (PILs) offer tunable properties for advanced materials.
  • Ionogels (IGs) combine ionic liquids with polymers to create functional solid-state electrolytes.
  • Developing processable ionogels with high ionic conductivity is crucial for electrochemical applications.

Purpose of the Study:

  • To synthesize and characterize ionogels (IGs) based on tri-n-alkylammonium cations and mesylate/triflate anions.
  • To investigate the thermal, electrochemical, and ion transport properties of these IGs.
  • To explore the feasibility of 3D printing these ionogels for structured applications.

Main Methods:

  • Incorporation of PILs into a polymer matrix to form ionogels.
  • Thermal analysis (e.g., TGA, DSC).
  • Electrochemical impedance spectroscopy (EIS) for ionic conductivity measurements.
  • Pulsed-field gradient nuclear magnetic resonance (PFG-NMR) for ion diffusion studies.
  • Stereolithography for 3D printing.

Main Results:

  • Synthesized a range of PIL-based ionogels.
  • Achieved ionic conductivities in the range of 10⁻⁴–10⁻³ S/cm⁻¹ at elevated temperatures.
  • Observed ion diffusion coefficients around 10⁻¹¹ m²/s.
  • Demonstrated successful 3D printing of an ionogel with 70 wt% IL content using stereolithography.

Conclusions:

  • The developed ionogels exhibit good thermal and electrochemical stability.
  • These ionogels show significant ionic conductivity and ion mobility.
  • The ability to 3D print these ionogels opens avenues for creating structured, ion-conductive materials for advanced applications, such as membranes.