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Miscanthus-Derived Energy Storage System Material Production.

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Optimizing pyrolysis of Miscanthus-derived carbon enhances its surface area and pore volume for thermal energy storage. This process is crucial for developing advanced porous carbon materials.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Energy Storage

Background:

  • Biomass-derived carbon is explored for thermal energy storage applications.
  • Process optimization for Miscanthus-derived carbon encapsulation of phase change materials is lacking.
  • Porous carbon materials are essential for efficient energy storage systems.

Purpose of the Study:

  • To optimize the pyrolysis process for Miscanthus-derived carbon.
  • To investigate the effects of pyrolysis time, temperature, and biomass:catalyst ratio on carbon properties.
  • To determine optimal conditions for maximizing surface area and pore volume.

Main Methods:

  • Response surface methodology was employed for process optimization.
  • Zinc chloride (ZnCl2) was used as a catalyst to enhance pore formation.
  • Pyrolysis parameters (temperature, time, biomass:catalyst ratio) were systematically varied.

Main Results:

  • Two optimal conditions were identified: (1) 614 °C, 53 min, 1:2 ratio yielding 1415.4 m²/g surface area and 0.748 cm³/g pore volume; (2) 722 °C, 77 min, 1:4 ratio yielding 1499.8 m²/g surface area and 1.443 cm³/g pore volume.
  • Carbon produced at 614 °C showed micro- and mesopores.
  • Carbon produced at 722 °C exhibited meso- and macroporous structures.

Conclusions:

  • Process optimization is critical for tailoring porous carbon properties.
  • Optimized Miscanthus-derived carbon shows high potential for thermal and electrochemical energy storage.
  • The study provides a pathway for designing advanced porous carbon materials.