CD Tesis

Pembuatan Dan Karakterisasi Elektroda Superkapasitor Dari Rumput Purun Tikus Dengan Metode Kombinasi Aktivasi Kimia Dan Fisika

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Water chestnut are polluted weed plant in fresh water. The preliminary study of water chestnut in this research has been successfully suitable as a supercapacitor electrode. The first step of preparation the supercapacitor electrode includes a series of processes such as taking, cutting (± 2 cm), draining to constant mass, pre-carbonization at 250 °C, milling of 20 hours, chemical activation and pellet printing. The carbonization and activation process is carried out simultaneously using N2 gas at 600 °C and followed by CO2 gas to a temperature of 900 °C. The first stages of research are KOH activation with different concentration i.e 0.3 M, 0.5 M, and 0.7 M at CO2 activation for 2 hours The second stage of research is the best KOH activator concentration from the first stage nexted by the variation of CO2 activation time i.e 1.5 hours, 2 hours, 2.5 hours and 3 hours. The electrochemical properties of the supercapacitor are determined using cyclic voltammetry method with a scan rate of 1 mV/s and potential 0-0,5 V. The result of cyclic voltammetry is a specific capacitance (Csp) calculated based on the width of the Ic-Id current and the average mass of 2 electrodes. The best variation in the first stage with the highest Csp value obtained as high as 107 Fg-1 was found in a variation of 0.5 M KOH. This result then proceeds to the second stage where the highest Csp obtained as high as 130 Fg-1 is found at CO2 activation for 2.5 hours. As supporting data also performed characterization of physical properties such as density, surface electrode morphology, elemental content, crystal structure and pore properties. The results researched showed that water chestnut potentially developed as a supercapacitor electrode and a solution in reducing damage to freshwater ecosystem.


Keywords: Water chestnut, supercapasitor electrode, KOH
concentration, CO2 activation, spesific capacitance

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 17. 218 (0005)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Fisika., 2018

Deskripsi Fisik

xv, 70 hlm.; ill.; 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

10 17. 218 (0005)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

PASCASARJANA (MAGISTER) FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

Versi lain/terkait

Lampiran Berkas

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