Production of Carbon-Based Material Via Microwave Pyrolysis for Energy Storage Application: A Case Study

Author : Crisostomo, Daniel Edward Josef Ordonio
Major Adviser : Carpio, Rowena B.
Committee Members : Capunitan, Jewel A.; Detras, Monet Concepcion M.
Year : 2020
Month : July
Type : Thesis
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Microwave pyrolysis is found to have several advantages over the conventional method like less feedstock selectivity, cleaner energy source, lower operating temperature, faster conversion, less environmentally harmful product, and cheaper overall production brought by its different heating mechanism. Microwave technology homogenously distributes heat throughout the material which makes its operation efficient and effective. Biochar was investigated to be a candidate material of an electrode in an energy storage device due to the demand from the energy industry to explore the possibility of replacing conventional batteries by supercapacitors; high power output, fast charge/discharge capabilities, and high cycle life or “product life”. Biochar yield of microwave pyrolysis has better qualities than the conventional method based on energy storage application qualifications like carbon content averaging to 81.32%. A number of studies already produced supercapacitors using biochar as an electrode that results in comparable characteristics to current conventional products. Using Argy warmwood as the precursor has the most excellent results for supercapacitor application with 344 F/g (Capacitance), 175 Wh/kg (Energy Density), and 850 W/kg (Power Density). Although a standard conversion procedure with optimized factors – feedstock, pre and post-process parameters – is yet to be created because raw material choices have different characteristics that need different treatments to produce the desired quality of the target product for the specific application, thus, studies on the combination of the different contributing factors are further needed to be done. Upscaling studies should also be made to have a better comparison of the use of different conversion technologies in the production of the desired product.

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