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Bio-Based PHUs for Green Energy Storage

📑 5 slides 👁 16 views 📅 3/16/2026 📄 PDF
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Introduction to Bio-Based PHUs

Bio-based PHUs offer sustainable alternatives to petrochemical polymers for energy storage.

Introduction to Bio-Based PHUs
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Synthesis & Properties

  • Synthesized from erythritol dicarbonate (EDC) and bio-based diamines.
  • Tunable Tg (22-50°C) based on diamine alkyl chain length (n=6,8,12).
  • PHU6 shows optimal Tg ~50°C with Mn=8.6 kg·mol⁻¹ and Đ=2.2.
Synthesis & Properties
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Dielectric Performance

  • PHU6 achieves εr=8.4 at 1 kHz with tan δ<0.03 (low losses).
  • Weibull analysis confirms high Eb=428 MV·m⁻¹ (β=5.9).
  • Linear dielectric behavior enables Pmax=3.2 μC·cm⁻² at Eb.
Dielectric Performance
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Energy Storage Advantages

  • Outperforms fluorinated polymers with η=85% at Eb (91% at 0.5Eb).
  • Specific energy ~2 Wh·kg⁻¹, power density ~10⁸ W·kg⁻¹.
  • Potential for EV inverters, medical devices, and industrial applications.
Energy Storage Advantages
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Conclusion & Future Outlook

  • 100% bio-based PHUs match petrochemical materials in performance.
  • Tunable Tg enables optimization for high-temperature applications.
  • Scalable synthesis supports sustainable energy storage solutions.
Conclusion & Future Outlook
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