Revalorization of Pleurotus djamor Fungus Culture: Fungus-Derived Carbons for Supercapacitor Application

Paola Navid García-Hernández, José Martín Baas-López, Tanit Toledano-Thompson, Ruby Valdez-Ojeda and Daniella Pacheco-Catalán
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Paola Navid García-Hernández: Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Parque Científico Tecnológico de Yucatán, Carretera Sierra Papacal-Chuburná Puerto, Km5, Mérida 97302, Mexico
José Martín Baas-López: Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Parque Científico Tecnológico de Yucatán, Carretera Sierra Papacal-Chuburná Puerto, Km5, Mérida 97302, Mexico
Tanit Toledano-Thompson: Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Parque Científico Tecnológico de Yucatán, Carretera Sierra Papacal-Chuburná Puerto, Km5, Mérida 97302, Mexico
Ruby Valdez-Ojeda: Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Parque Científico Tecnológico de Yucatán, Carretera Sierra Papacal-Chuburná Puerto, Km5, Mérida 97302, Mexico
Daniella Pacheco-Catalán: Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán, Parque Científico Tecnológico de Yucatán, Carretera Sierra Papacal-Chuburná Puerto, Km5, Mérida 97302, Mexico

Sustainability, 2021, vol. 13, issue 19, 1-18

Abstract: Currently, there is increasing interest and effort directed to developing sustainable processes, including in waste management and energy production and storage, among others. In this research, corn cobs were used as a substrate for the cultivation of Pleurotus djamor , a suitable feedstock for the management of these agricultural residues. Revalorization of this fungus, as an environmentally friendly carbon precursor, was executed by taking advantage of the intrinsic characteristics of the fungus, such as its porosity. Obtaining fungus-derived porous carbons was achieved by hydrothermal activation with KOH and subsequent pyrolysis at 600, 800, and 1000 °C in an argon atmosphere. The morphologies of the fungal biomass and fungus-derived carbons both exhibited, on their surfaces, certain amorphous similarities in their pores, indicating that the porous base matrix of the fungus was maintained despite carbonization. From all fungus-derived carbons, PD1000 exhibited the largest superficial area, with 612 m 2 g −1 and a pore size between 3 and 4 nm recorded. Electrochemical performance was evaluated in a three-electrode cell, and capacitance was calculated by cyclic voltammetry; a capacitance of 60 F g −1 for PD1000 was recorded. Other results suggested that PD1000 had a fast ion-diffusion transfer rate and high electronic conductivity. Ultimately, Pleurotus djamor biomass is a suitable feedstock for obtaining carbon in a sustainable way, and it features a defined intrinsic structure for potential energy storage applications, such as electrodes in supercapacitors.

Keywords: Pleurotus djamor; energy storage; supercapacitors; revalorization (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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