CD Tesis

Pembuatan Dan Karakterisasi Karbon Aktif Berbahan Ampas Wortel (Daucus Carota) Sebagai Bahan Dasar Superkapasitor

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Supercapacitor is a popular energy storage device which is currently being investigated
because it has the advantages of fast charge-discharge speed, high power density,
unlimited long-term stability, low cost, and relatively easier production processes. This
study aims to obtain activated carbon derived from carrot waste as an electrode material
for supercapacitors application. Supercapacitor from carrot waste activated carbon was
prepared through a combination of an integrated one-stage pyrolysis process and
chemical activation. The one-stage pyrolysis process was performed by a combination of
carbonization and physical activation. Chemical activation was carried out by using a
solution of potassium hydroxide (KOH) with a concentration of 0.3 M. The conversion of
carrot waste to activated carbon was started with the pre-treatment of carrot waste which
includes collected the carrot waste, washed the initial sample, and dried the sample in
sunlight and continued with the oven with a temperature of 110 °C. The dried carrot
waste sample was then pre-carbonized at a temperature of 250 °C for 2.5 hours.
Furthermore, the samples were converted into powder by grinding for 20 hours and
sieved to obtain homogeneous powder particles. Chemical activation is performed by
mixing the KOH solution. Carbonization was carried out at a temperature of 600 °C in
an N2 gas environment and followed by a physical activation process using CO2 gas at a
temperature of 900 °C for 2.5 hours. Moreover, to maximize the electrochemical
behaviors of the supercapacitor, four different electrolyte solutions were applied
including 1 M H2SO4, 6 M KOH, 1 M Na2SO4, and distilled water (neutral).
The physical properties of the electrode supercapacitor that have been characterized
including density, crystallinity, and functional groups and carbon chain structures shown
relatively normal and ideal results for bio waste-based activated carbon, especially
carrot waste. The carbon electrode density decreased significantly after the
carbonization-activation process as high as 24.4%. Furthermore, the XRD
characterization confirmed that the samples had good amorphous properties with an
XRD surface area of 1214 m2/gr. In addition, FTIR characterization reviewed a reduction
in the absorption band disappearing in the spectrum, which indicates the evaporation of
organic compounds at high temperatures. The electrochemical properties of
supercapacitorwere evaluated using the cyclic voltammetry method through four different
electrolytes performed relatively high specific capacitances. The highest specific
capacitance was found in activated carbon with 1 M H2SO4 electrolyte of 155 F/g at the
potential window of 0-1.0 V.
Keywords: carrot waste, activated carbon, electrode material, supercapacitor

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 17. 220 (0025)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Fisika., 2020

Deskripsi Fisik

xiii, 69 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

10 17. 220 (0025)

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

Versi lain/terkait

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