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Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
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Fungal Carbon: A Cost-Effective Tunable Network Template for Creating Supercapacitors.
Mitchell P Jones1, Qixiang Jiang2, Andreas Mautner2,3
1Institute of Materials Science and Technology Faculty of Mechanical and Industrial Engineering TU Wien Gumpendorferstrasse 7, Objekt 8 Vienna 1060 Austria.
Global Challenges (Hoboken, NJ)
|April 15, 2024
Summary
Fungal filaments from food industry waste offer a sustainable source for novel carbon materials. These biomass-derived carbons show high surface area and capacitance, making them promising for supercapacitor applications.
Area of Science:
- Materials Science
- Biotechnology
- Electrochemistry
Background:
- Carbon materials are crucial for biogas purification, energy storage, and polymer modification.
- Conventional carbon production faces environmental and resource limitations, driving interest in sustainable alternatives.
- Biomass-derived carbons offer potential but have limitations in yield, processing, and resource competition.
Purpose of the Study:
- To investigate naturally formed fungal filaments as sustainable templates for carbon networks.
- To evaluate the properties of pyrolyzed fungal carbons for energy storage applications.
- To explore the potential of fungal carbons in supercapacitor development.
Main Methods:
- Utilizing fungal filaments from *Agaricus bisporus* and *Pleurotus eryngii* as templates.
- Pyrolyzing fungal filament networks to create carbon materials.
- Characterizing the surface area (BET) and specific capacitance of the resulting carbons.
- Comparing fungal-derived carbons with commercial carbon materials and other biomass-derived carbons.
Main Results:
- Pyrolyzed fungal filament networks exhibited mesoporous and microscale structures, comparable to carbon fibers.
- BET surface areas reached ≈282 m² g⁻¹ (*A. bisporus*) and ≈60 m² g⁻¹ (*P. eryngii*), exceeding carbon fibers and some biomass carbons.
- Specific capacitance surpassed non-activated and activated pyrolyzed bacterial cellulose, as well as commercial coconut shell carbons.
- Tunable properties through species and growth environment offer potential for optimization.
Conclusions:
- Naturally formed fungal filaments are a cost-effective and sustainable resource for producing high-performance carbon materials.
- Fungal-derived carbons demonstrate significant potential for supercapacitor applications due to high surface area and specific capacitance.
- Further research into optimizing fungal carbon properties through biomineralization and morphological control is warranted.
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