CD Tesis

Analisis Pengaruh Penambahan Reduced Graphene Oxide Pada Elektroda Karbon Berbasis Serat Buah Bintaro Untuk Sel Superkapasitor

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Supercapacitor energy storage devices and their electrode materials as the core preparation of high-performance supercapacitors have received wide attention by researchers. Biomass-based activated carbon electrode materials have been widely developed due to their environmental friendliness, abundant availability, porous structure, large specific surface area and good electrical conductivity. Although biomass-based carbon electrodes have produced high specific capacitance, there is still further demand to increase specific capacitance. Biomass-based carbon materials added with carbon nanomaterials such as reduced graphene oxide (rGO) show increased specific capacitance, power density, and energy density.
This research focuses on the development of biomass-based carbon electrodes derived from bintaro fruit fiber (SB) with variations in carbonization temperature and the addition of reduced graphene oxide (rGO) to improve the performance of supercapacitor cells. Bintaro fruit fiber as a basic material for making carbon electrodes was made through a pre-carbonization process at 200℃ for 1 hour, chemical activation with KOH impregnation and addition of rGO with a mass of 0.01, 0.03 and 0.05 g. The carbonization process uses nitrogen (N2) gas at 500 ℃, 600 ℃ and 700 ℃ and the physical activation process is carried out using carbon dioxide gas (CO2) at 800 ℃. The resulting carbon electrode was characterized to determine its physical properties using Scanning Electron Microscopy, Energy Dispersive X-Ray, X-Ray Diffraction, Fourier Transform Infrared, and Isothermal Adsorption-Desorption of Nitrogen. The electrochemical properties of supercapacitor cells were analyzed using Cyclic Voltammetry (CV) and Galvanostatic Charge Discharge (GCD) methods to determine the specific capacitance values, power density and energy density of supercapacitor cells.
The SB electrode with the optimum carbonization temperature (SB-600) produced a fibrous structure with a lot of mesoporous so that the specific surface area and specific capacitance were high, namely 721,495 m2 g-1 and 221 F g-1, respectively. The addition of rGO was carried out on the SB electrode with the optimum carbonization temperature (600 ℃) intended to improve the physical and electrochemical properties of the SB electrode. rGO can increase the efficiency of electron transfer, improve the morphological structure so that the specific surface area and capacitive properties of biomass-based activated carbon increase. The SBG-03 sample has the highest specific capacitance, energy density and power density values of 286 F g-1, 45 Wh kg-1 and 202 W kg-1, respectively among other SB samples caused by the synergistic effect between SB activated carbon and rGO as well as mass addition of optimized rGO. The results of this study make activated carbon based on biomass with the addition of rGO a promising supercapacitor electrode material because it can improve the electrochemical performance of supercapacitor cells.
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Key Words : Bintaro fruit fiber, Carbon Electrodes, Carbonization, Reduced Graphene Oxide, Supercapacitors

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2010247524

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Fisika., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2010247524

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

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