Activated Carbon Derived from Cucumber Peel for Use as a Supercapacitor Electrode Material
Nazhipkyzy M. Kurmanbayeva G. Seitkazinova A. Varol E.A. Li W. Dinistanova B. Issanbekova A. Mashan T.
April 2024Multidisciplinary Digital Publishing Institute (MDPI)
Nanomaterials
2024#14Issue 8
Biowaste conversion into activated carbon is a sustainable and inexpensive approach that relieves the pressure on its disposal. Here, we prepared micro-mesoporous activated carbons (ACs) from cucumber peels through carbonization at 600 °C followed by thermal activation at different temperatures. The ACs were tested as supercapacitors for the first time. The carbon activated at 800 °C (ACP-800) showed a high specific capacitance value of 300 F/g at a scan rate of 5 mV/s in the cyclic voltammetry and 331 F/g at the current density of 0.1 A/g in the galvanostatic charge–discharge analysis. At the current density of 1 A/g, the specific discharge capacitance was 286 F/g and retained 100% capacity after 2000 cycles. Their properties were analyzed by scanning electron microscopy, energy-dispersive X-ray analysis, porosity, thermal analysis, and Fourier-transform infrared spectroscopy. The specific surface area of this sample was calculated to be 2333 m2 g−1 using the Brunauer–Emmett–Teller method. The excellent performance of ACP-800 is mainly attributed to its hierarchical porosity, as the mesopores provide connectivity between the micropores and improve the capacitive performance. These electrochemical properties enable this carbon material prepared from cucumber peels to be a potential source for supercapacitor materials.
biowaste , capacitive performance , cucumber peels , pore accessibility , porous carbon
Text of the article Перейти на текст статьи
Department of Chemical Physics and Material Science, Al-Farabi Kazakh National University, 71 Al-Farabi Ave., Almaty, 050038, Kazakhstan
Institute of Combustion Problems, Bogenbai Batyr Street 172, Almaty, 050012, Kazakhstan
Department of Materials Science, Nanotechnology and Engineering Physics, Satbayev University, Satpaev St. 22, Almaty, 050000, Kazakhstan
Department of Chemical Engineering, Eskisehir Technical University, Eskişehir, 26555, Turkey
Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Ave., Montclair, 07043, NJ, United States
UNESCO Chair in Sustainable Development, Al-Farabi Kazakh National University, 71 Al-Farabi Ave., Almaty, 050038, Kazakhstan
Department of Chemistry, L.N. Gumilyov, Eurasian National University, Kazhymukan Str. 11, Astana, 010000, Kazakhstan
Department of Chemical Physics and Material Science
Institute of Combustion Problems
Department of Materials Science
Department of Chemical Engineering
Department of Chemistry and Biochemistry
UNESCO Chair in Sustainable Development
Department of Chemistry
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026