Fungal Carbon: A Cost‐Effective Tunable Network Template for Creating Supercapacitors

Author:

Jones Mitchell P.1ORCID,Jiang Qixiang2ORCID,Mautner Andreas23ORCID,Naghilou Aida45ORCID,Prado‐Roller Alexander6ORCID,Wolff Marion1,Koch Thomas1,Archodoulaki Vasiliki‐Maria1ORCID,Bismarck Alexander2ORCID

Affiliation:

1. Institute of Materials Science and Technology Faculty of Mechanical and Industrial Engineering TU Wien Gumpendorferstrasse 7, Objekt 8 Vienna 1060 Austria

2. Polymer & Composite Engineering (PaCE) Group Institute of Materials Chemistry and Research Faculty of Chemistry University of Vienna Währinger Straße 42 Vienna 1090 Austria

3. Institute for Environmental Biotechnology Department IFA University of Natural Resources and Life Sciences Vienna Konrad‐Lorenz‐Straße 20 Tulln an der Donau 3430 Austria

4. Department of Plastic Reconstructive and Aesthetic Surgery Medical University of Vienna Spitalgasse 23 Vienna 1090 Austria

5. Medical Systems Biophysics and Bioengineering Leiden Academic Centre for Drug Research Leiden University Leiden 2333 The Netherlands

6. Department of Functional Materials and Catalysis Faculty of Chemistry University of Vienna Währinger Straße 42 Vienna 1090 Austria

Abstract

AbstractCarbons form critical components in biogas purification and energy storage systems and are used to modify polymer matrices. The environmental impact of producing carbons has driven research interest in biomass‐derived carbons, although these have yield, processing, and resource competition limitations. Naturally formed fungal filaments are investigated, which are abundantly available as food‐ and biotechnology‐industry by‐products and wastes as cost‐effective and sustainable templates for carbon networks. Pyrolyzed Agaricus bisporus and Pleurotus eryngii filament networks are mesoporous and microscale with a size regime close to carbon fibers. Their BET surface areas of ≈282 m2 g−1 and ≈60 m2 g−1, respectively, greatly exceed values associated with carbon fibers and non‐activated pyrolyzed bacterial cellulose and approximately on par with values for carbon black and CNTs in addition to pyrolyzed pinewood, rice husk, corn stover or olive mill waste. They also exhibit greater specific capacitance than both non‐activated and activated pyrolyzed bacterial cellulose in addition to YP‐50F (coconut shell based) commercial carbons. The high surface area and specific capacitance of fungal carbon coupled with the potential to tune these properties through species‐ and growth‐environment‐associated differences in network and filament morphology and inclusion of inorganic material through biomineralization makes them potentially useful in creating supercapacitors.

Funder

Universität Wien

Publisher

Wiley

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