1Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Pertamina, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12220, Indonesia
2Chemical Engineering Department, Industrial Technology Faculty, Parahyangan Catholic University, Kota Bandung, Jawa Barat 40141, Indonesia
3Research and Technology Innovation, PT. Pertamina (Persero), Indonesia, Indonesia
BibTex Citation Data :
@article{JKSA57572, author = {Agung Nugroho and Muhammad Reza Wirayudha Pratama and Hans Kristianto and Haryo Satriya Oktaviano and Arenst Andreas Arie and Ratna Frida Susanti}, title = {Synthesis and Electrochemical Properties of SnO2 Composited Activated Carbon from Coffee Ground Waste for Supercapacitor Applications}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {26}, number = {8}, year = {2023}, keywords = {waste coffee ground; tin oxide; composite; electrochemistry; activated carbon}, abstract = {Biomass has been considered an alternative source of electrode materials. Converting biomass into activated carbon is one of the possible approaches. Coffee ground waste is abundant as the world’s coffee-drinking culture grows. This paper describes a study that converted coffee grounds into activated carbon and tested its feasibility for electrode materials. We use a simple pyrolysis technique (800°C) to synthesize activated carbon from waste coffee grounds, with potassium hydroxide (KOH) as an activator. Tin oxide (SnO 2 ), which has a high theoretical capacity, was impregnated into the carbon framework using a hydrothermal method operating at 180°C for 2 hours. The X-ray diffraction (XRD) pattern and Fourier transform infrared spectroscopy (FTIR) results show that SnO 2 was successfully impregnated into the carbon structure. Raman analysis also shows that the carbon structure of the activated carbon still retains despite the presence of the metal oxide during the hydrothermal synthesis. Furthermore, electrochemical measurements utilizing the galvanostatic method using a three-electrode system demonstrated that the specific capacitance of the material increased by approximately 106% at 5 A/g following SnO 2 impregnation. Long cycle testing further demonstrates that including SnO 2 in the carbon, structure may sustain outstanding performance even at high current densities of 5 A/g for 100 cycles with 99% capacity retention. The results demonstrate the possibility of activated carbon from coffee ground waste composited with tin oxide as supercapacitor electrodes.}, issn = {2597-9914}, pages = {293--299} doi = {10.14710/jksa.26.8.293-299}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/57572} }
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