Sintesis Elektroda Superkapasitor dengan Proses Eksfoliasi Kimia dan Doping NH4OH pada Grafena Oksida Tereduksi dari Tempurung Kelapa Tua

Kurniawan, Ahmad Rizki (2018) Sintesis Elektroda Superkapasitor dengan Proses Eksfoliasi Kimia dan Doping NH4OH pada Grafena Oksida Tereduksi dari Tempurung Kelapa Tua. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini menggunakan bahan dasar serbuk arang rGO dari tempurung kelapa tua. Bahan dasar disintesis dengan larutan HCl 1 M dan FeCl3 di dalam gelas ukur yang diaduk dengan magnetic stirrer pada suhu 70oC. Penambahan glukosa dan doping nitrogen dari NH4OH bertujuan untuk meningkatkan nilai kapasitansi spesifik elektroda superkapasitor selama proses exfoliasi kimia dan mekanik. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan glukosa, penambahan NH4OH, serta penambahan NH4OH dan glukosa terhadap nilai kapasitansi serta rapat energi superkapasitor EDLC. Karakterisasi elektroda menggunakan beberapa pengujian. Pengujian bahan dasar meliputi XRD, SEM-EDX, XRF, dan CHONS Analyzer. Pengujian pada elektroda hasil sintesis dengan PSA dan CV. Hasil XRD menunjukkan bahwa bahan dasar yang digunakan merupakan rGO dengan sudut difraksi (2) = 24o dan 44o. Hasil XRF menunjukkan persentase unsur C pada bahan dasar cukup besar yakni 53%. Uji SEM-EDX memperlihatkan morfologi bahan dasar yang masih berupa bongkahan (flakes) serta persebaran unsur C pada sampel terlihat merata. Pengujian PSA menunjukkan bahwa ukuran partikel sebelum disintesis dapat direduksi setelah proses sintesis. Uji CV memperlihatkan hasil sampel R212 (rGO : HCl : NH4OH : FeCl3 : Glukosa = 2 : 2 : 2 : 1 : 2) memiliki nilai kapasitansi terbesar dengan nilai 37,33 F/g dan rapat energinya 74,66 J/g. Hasil menunjukkan bahwa penambahan NH4OH dapat meningkatkan nilai kapasitansi spesifik superkapasitor selama tidak terjadi over-doped nitrogen pada rGO, serta lebih efisien apabila ditambahkan glukosa sebesar komposisi rGO. ============================================================================================================== This research uses starting material of rGO charcoal powder from old coconut shell. The rGO powder was synthesized with 1 M HCl and FeCl3 solution stirred with a magnetic stirrer at 70°C. The addition of glucose and doping nitrogen from NH4OH aim to increase specific capacitance of the supercapacitor electrode during chemical and mechanical exfoliation processes. This study aims to determine the effect of addition of glucose and NH4OH to the capacitance values and energy density of EDLC superkapasitor. Electrode characterization uses several characterisasions. Analyses for the starting material include XRD, SEM-EDX, XRF, and CHONS Analyzer. Testing for the synthetic rGO electrode uses PSA and CV. The result of XRD shows that the basic material in this research is rGO, with diffraction angle (2) = 24o and 44o. The result of XRF shows the percentage of element C on the starting material is large enough, that is 53%. The result of SEM-EDX shows the morphology of the basic material rGO that is still in the form of flakes and the distribution of element C in the sample is evenly distributed. The result of PSA shows that the size of the particles can be reduced after the synthesis process. The result of CV shows the sample of R212 (rGO: HCl: NH4OH: FeCl3: Glucose = 2: 2: 2: 1: 2) has the largest capacitance value with a value of 37.33 F/g and energy density 74.66 J/g. The results above show the addition of NH4OH may increase the value of the specific capacitance of the supercapacitor in the absence of over-doped nitrogen in the rGO, and more efficient when glucose is added as much as the rGO composition.

Item Type: Thesis (Undergraduate)
Additional Information: RSFi 541.372 4 Kur s-1 3100018076936
Uncontrolled Keywords: Kapasitor, Doping Nitrogen, elektroda
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General) > TA455 Carbon. Nanotubes.
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001 Production of electric energy or power
Divisions: Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User: Ahmad Rizki Kurniawan
Date Deposited: 20 Nov 2020 21:58
Last Modified: 07 Dec 2020 04:24
URI: https://repository.its.ac.id/id/eprint/55453

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