Miscanthus-Derived Energy Storage System Material Production

Abstract

Carbon derived from various biomass sources has been evaluated as support material for thermal energy storage systems. However, process optimization of Miscanthus-derived carbon to be used for encapsulating phase change materials has not been reported to date. In this study, process optimization to evaluate the effects of selected operation parameters of pyrolysis time, temperature, and biomass:catalyst mass ratio on the surface area and pore volume of produced carbon is conducted using response surface methodology. In the process, ZnCl2 is used as a catalyst to promote high pore volume and area formation. Two sets of optimum conditions with different pyrolysis operation parameters in order to produce carbons with the highest pore area and volume are determined as 614 °C, 53 min, and 1:2 biomass to catalyst ratio and 722 °C, 77 min, and 1:4 biomass to catalyst ratio with 1415.4 m2/g and 0.748 cm3/g and 1499.8 m2/g and 1.443 cm3/g total pore volume, respectively. Carbon material produced at 614 °C exhibits mostly micro- and mesosized pores, while carbon obtained at 722 °C comprises mostly of meso- and macroporous structures. Findings of this study demonstrate the significance of process optimization for designing porous carbon material to be used in thermal and electrochemical energy storage systems.

Recent Advances in Biomass Waste Derived Carbon Materials for Supercapacitors: A Review

“…In contrast, various biomass has natural unique morphological structure. Currently, the reported literature classifies carbon material structures into four categories: 0D spheres, 1D carbon nanotubes, 2D carbon nanosheets and 3D porous carbon, and the different morphologies of carbon materials are suitable for different fields such as catalysis, [31,32] adsorption [33,34] and energy storage, [35,36] respectively. The low-dimensional materials have unique advantages in charge transfer.…”