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Irma Apriyani
Universitas Riau
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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PEMBUATAN ELEKTRODA KARBON AKTIF DARI TANDAN KOSONG BUAH AREN DENGAN VARIASI SUHU KARBONISASI Irma Apriyani; Rakhmawati Farma
Komunikasi Fisika Indonesia Vol 18, No 1 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.1.58-63

Abstract

The preparation and characterization of the physical properties of activated carbon electrodes derived from the biomass of empty palm fruit bunches were analyzed by varying the carbonization temperature. Biomass of empty palm fruit bunches is selected as a base material for making carbon electrodes throught a pre-carbonization process, chemical activation with KOH 0.5 M activator, carbonization process with variations in temperature 650 °C, 700 °C, 750 °C, and 800 °C under an N2 gas environment, and activated by CO2 gas at 900 °C. Reduce of carbon mass by 20.182 % and produce carbon powder. Thermogravimetry show that thermal resistance temperature of 307 °C a carbon powder. The density value of each carbon electrode for carbonization temperature of 650 °C, 700 °C, 750 °C and 800 °C is 0.557 g/cm3, 0.622 g/cm3, and 0.702 g/cm3, respectively. Microstructure analysis shows that amorphous structure for the activated carbon electrodesshowed by the presence of the peaks of 2θ around 24° and 44°.The results showed that the temperature of 700 °C is the best carbonization temperature in production of carbon electrodes from TKBA.
SIKLIS VOLTAMETRI SEL SUPERKAPASITOR DARI BIOMASSA PELEPAH SALAK Rakhmawati Farma; Amalia Apriliani Putri; Irma Apriyani
Komunikasi Fisika Indonesia Vol 19, No 1 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.19.1.19-24

Abstract

Snake fruit midrib (SFM) biomass has the potential to be used as a precursor material for making carbon electrodes because it has a high lignocellulosic content for supercapacitor applications. Carbon electrodes were made from snake fruit midrib biomass using a pre-carbonization process at 200 °C, chemical activation with 0.1 M KOH as an activating agent, a carbonization process with temperature variations of 500 °C, 600 °C, and 700 °C using N2 gas, and a physical activation process at 800 °C with CO2 gas. Thermogravimetric analysis shows the thermal resistance temperature of carbon powder is 317.1 °C. Analysis of the electrochemical properties of supercapacitor cells from snake fruit midrib obtained specific capacitance values of 123.23 F/g, 169.05 F/g, and 213.27 F/g for samples SFM-500, SFM-600, and SFM-700, respectively. The results showed that 700 °C was the best carbonization temperature for carbon electrodes from snake fruit midrib.
SINTESIS KARBON AKTIF BERBASIS BIOMASSA SERAT BINTARO SEBAGAI BAHAN ELEKTRODA UNTUK APLIKASI SEL SUPERKAPASITOR Aria Yunita; Rakhmawati Farma; Awitdrus Awitdrus; Irma Apriyani
Indonesian Physics Communication Vol 20, No 3 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.223-230

Abstract

Biomass-based activated carbon has been widely developed due to its environmental friendliness, abundant availability, porous structure, high specific surface area and good electrical conductivity. One of the ways to improve the performance of supercapacitor cells is to increase the carbonization temperature, so that in this study various carbonization temperatures were carried out at 500°C, 600°C and 700°C. The results showed that the carbonization temperature of 600°C was the optimum temperature for making SB-based activated carbon. This is indicated by the results of measuring the physical properties of SB-600 in the form of the lowest density shrinkage value which can increase porosity thereby increasing the performance of supercapacitor cells. From this study, the highest capacitance value of 213 F.g-1 was found on the SB-600. The results obtained indicate that the selection of the optimum carbonization temperature is important and can improve the performance of supercapacitor cells.
Co-Authors Amalia Apriliani Putri Aria Yunita Awitdrus Awitdrus, Awitdrus Rakhmawati Farma