Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 330, Issue -, Pages -Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2022.117158
Keywords
Yerba mate; Waste; Activated carbon; Energy storage; Supercapacitors
Categories
Ask authors/readers for more resources
Developing technological solutions using yerba mate waste can reduce environmental impact and accumulation in landfills. Yerba mate residues can be transformed into activated carbon, a versatile material with high surface area for energy storage. Chemically activated carbon was produced from the residues and characterized for its excellent electrochemical properties, making it suitable for use in supercapacitors.
Developing technological solutions that use yerba mate waste as precursors is key to reducing the environmental impact caused by the lack of treatment and its accumulation in landfills. Due to their physicochemical properties, these residues can be used to develop activated carbons. Activated carbon is a versatile material with a high surface area that can be used for energy storage. In this work, yerba mate residues were valued by producing chemically activated carbon to be used as elec-trode material in supercapacitors. Activated carbons were developed through chemical activation in two steps with KOH. Variables such as impregnation ratio and activation temperature are studied. The developed carbons were characterized by physicochemical and electrochemical techniques. They were found to have high surface areas, up to 1800 m2 g-1, with a hierarchical porous distribution. A maximum specific capacitance of 644 F g-1 at 0.1 A g-1, and power values of ca 32,000 W kg-1, at 33 A g-1 were found. All the synthesized carbons have excellent electrochemical properties and are suitable for use as active material in supercapacitors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available