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Rika Taslim
Universitas Islam Negeri Sultan Syarif Kasim
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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PENGARUH TEMPERATUR AKTIVASI FISIKA TERHADAP KINERJA SUPERKAKASITOR BERBASIS ELEKTRODA KARBON DARI AMPAS SAGU Erman Taer; Zikri Alrifani; Rika Taslim
Komunikasi Fisika Indonesia Vol 15, No 2 (2018)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (112.387 KB) | DOI: 10.31258/jkfi.15.2.126-130

Abstract

The manufacture of activated carbon based on sago pulp as a super-capacitor cell electrode has been successfully performed. Preparation of activated carbon begins with heating of drying raw materials in the sun and followed by oven drying, pre-carbonization, milling, sieving, chemical activation with 2 M concentration KOH solution, pellet printing, carbonization at 600° C using N2 gas followed by physics activation with temperature variation of 700° C; 750° C; 800° C; 850° C; 900° C using water vapor and polishing of pellets are some of the steps that are followed. Carbon electrode density values for each sample of AC 700, AC 750, AC 800, AC 850, and AC 900 are 0,790 g/cm3, 0,791 g/cm3, 0,795 g/cm3, 0,760 g/cm3, dan 0,754 g/cm3. The SEM results show the shape of the particles formed unoccupied. EDX test results show the percentage of carbon reaches 90.13%. The measurement of electrochemical properties performed by cyclic voltammetry method yielded an optimum specific capacitance of 106 F/g  obtained at a temperature of 750° C.
POTENSI DAUN JAHE MERAH SEBAGAI BAHAN DASAR PEMBUATAN ELEKTRODA SUPERKAPASITOR Erman Taer; Juwita Ade Putri; Novi Yanti; Apriwandi Apriwandi; Rika Taslim
Komunikasi Fisika Indonesia Vol 19, No 2 (2022)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.19.2.119-127

Abstract

Red ginger leaf waste (Zingiber Officinale Var Rubrum) has been successfully processed as an active carbon base material for supercapacitor electrodes. The process of making carbon electrodes starts from the preparation of the original material, drying, refining, chemical activation, integrated pyrolysis and neutralization. The focus of this research is on the chemical activator ZnCl2 which is used with different concentrations of (0.1 and 0.5) M. Activated carbon powder is printed using a press to produce carbon in the form of solid coins of uniform size. The optimization of the carbon element in the sample is carried out through a pyrolysis process at high temperature with a one-stage integrated technique. Where, carbonization in the N2 gas environment is carried out starting from room temperature 30°C up to 600°C followed by physical activation until the high temperature reaches 800°C in CO2 gas environment. Characterization of activated carbon samples from red ginger leaves begins with determining the amount of shrinkage that occurs in the pyrolysis process by measuring the mass, diameter and thickness of the carbon coins. Furthermore, the electrochemical properties were tested using two methods, namely cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) in a symmetrical two-electrode system. The electrochemical characterization was carried out under the influence of an aqueous electrolyte of 1M KOH and 1M Na2SO4 at a low potential window of 0-1 V. The optimum conditions of electrochemical properties were found in the red ginger leaf activated carbon sample with a ZnCl2 activator concentration of 0.5M for the electrolyte. KOH with a specific capacitance value of 115.9 F/g. while for electrolyte Na2SO4 found in ZnCl2 activator 0.1M with a value of 72 F/g. Through these results, red ginger leaves are known to have great potential as a base material for activated carbon electrodes to improve the performance of supercapacitors.
Potential of palm frond waste as a basic material for making porous activated carbon Novi Yanti; Pharada Kresna; Muhammad Nasir; Rakhmawati Farma; Lilik Tri Hardanto; Rika Taslim; Erman Taer
Indonesian Physics Communication Vol 21, No 1 (2024)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.21.1.99-108

Abstract

Palm frond waste (Elaeis guineensis Jacq.) has been successfully processed as a raw material in the manufacture of porous activated carbon through the development of tools and methods. Preparation of raw materials, drying, pre-carbonization using an energy-efficient furnace, washing, integrated pyrolysis (N2/H2O), neutralization, and conversion of carbon powder into monolith coins are the general steps for making porous activated carbon. The focus of this research lies in increasing the production of activated carbon from a laboratory scale to an industrial scale through efficiency in all aspects of production. Precarbonization and pyrolysis are important stages in increasing the scale of activated carbon production. Currently, the conversion of biomass waste into carbon is still on a laboratory scale, namely by using an electric oven which is not time efficient, not economical and not energy efficient. Increasing the scale of pre-carbonization is carried out by replacing the use of electric ovens with modified energy-saving furnaces that can increase carbon production up to 74% in a very efficient time. Furthermore, the physical activation stage (pyrolysis) is carried out in a water vapor (H2O) environment and without the addition of chemicals as activating agents, of course it is more economical and environmentally friendly. This scale-up is the main key in the development of porous carbon which has high potential for application as a component in energy storage devices, namely electrodes in supercapacitors. Through these results it is known that the fronds of palm leaves have great potential as a basic material for making sustainable activated carbon to be forwarded to an industrial scale.
Co-Authors Apriwandi Erman Taer Juwita Ade Putri Lilik Tri Hardanto Muhammad Nasir Novi Yanti Novi Yanti Pharada Kresna Rakhmawati Farma Zikri Alrifani