Analisa Pengaruh Lama Waktu Deposisi Pada Elektroda Graphene Terhadap Sifat Kapasitif Superkapasitor Albertus Septyantoko

Septyantoko, Albertus (2016) Analisa Pengaruh Lama Waktu Deposisi Pada Elektroda Graphene Terhadap Sifat Kapasitif Superkapasitor Albertus Septyantoko. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Graphene merupakan material alotrofi karbon dengan formasi lembaran dari bidang karbon dua dimensi dan ketebalan satu atom. Dengan nilai konduktivitas listrik dan luas permukaan aktif yang tinggi maka graphene dapat digunakan sebagai bahan superkapasitor. Penelitian ini bertujuan untuk menganalisa lama waktu deposisi graphene pada nickel foam sebagai elektroda superkapasitor. Grafit dioksidasi membentuk Grafit Oksida (GO) dengan modifikasi metode Hummer. Setelah itu, GO direduksi menjadi graphene. Nickel foam dicelupkan ke dalam larutan graphene. Kemudian diultrasonikasi selama 30, 60, dan 90 menit untuk mendeposisikan graphene pada nickel foam. Analisa morfologi dan struktur graphene dilakukan dengan pengujian SEM dan XRD. Pengujian Four Point Probe Test (FPP) digunakan untuk mengukur konduktivitas listrik graphene. Pengujian Cyclic Voltammetry (CV) dengan elektrolit 1M Na2SO4 digunakan untuk mengukur kapasitansi superkapasitor berbahan graphene dan menganalisa sifat kapasitifnya. Hasil pengujian CV diperoleh nilai kapasitansi spesifik terbesar yaitu 155.44 F/g pada variasi waktu ultrasonikasi 90 menit. ======================================================= Graphene is a material alotrofi sheet of carbon with the formation of two-dimensional field of carbon and one atom. With the value of the electrical conductivity and high active surface area, the graphene can be used as supercapacitor material. This study aims to analyze the length of time of deposition of graphene on a nickel foam as a supercapacitor electrode. Graphite oxidized graphite oxide (GO) with modification Hummer method. After that, GO is reduced to graphene. Nickel foam is dipped into a solution of graphene. Then done ultrasonication for 30, 60, and 90 minutes to deposit graphene on a nickel foam. Analysis of the morphology and structure of graphene is done by testing SEM and XRD. Testing Four Point Probe Test (FPP) is used to measure the electrical conductivity of graphene. Testing Cyclic voltammetry (CV) with 1M Na2SO4 electrolyte is used to measure the capacitance of graphene-based supercapacitor and analyzing capacitive properties. CV testing results obtained best specific capacitance value is 155.44 F/g at variation the ultrasonication time 90 minutes.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Graphene, kapasitansi, superkapasitor, waktu deposisi
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials
T Technology > TP Chemical technology
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 06 Jan 2020 02:13
Last Modified: 06 Jan 2020 02:13
URI: http://repository.its.ac.id/id/eprint/72535

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