Analisis Pengaruh Doping Boron Terhadap Sifat Kapasitif Superkapasaitor Hybrid Berbahan Komposit BrGO/MnO2

Pirade, Angjelo (2023) Analisis Pengaruh Doping Boron Terhadap Sifat Kapasitif Superkapasaitor Hybrid Berbahan Komposit BrGO/MnO2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kebutuhan penyimpanan energi meningkat seiring dengan berjalannya waktu dan perkembangan zaman, sehingga banyak inovasi ataupun penelitian yang dilakukan guna mendapatkan perangkat penyimpan energi terbaru. Pada saat ini device penyimpanan energi yang umum digunakan adalah baterai dan superkapasitor. Superkapasitor dibagi menjadi 3 yaitu Electric Double Layer Capacitor (EDLC), pseudocapacitor, dan superkapasitor hybrid. EDLC tersusun dari material berbahan dasar karbon seperti reduced graphene oxide (rGO) yang memiliki luas permukaan yang tinggi. Akan tetapi kekurangannya nilai konduktivitas yang rendah, sehingga perlu dilakukan pendopingan. Salah satu material yang bisa digunakan untuk doping adalah boron. Boron dinilai dapat meningkatkan konduktivitas sehingga dapat meningkatkan transfer elektron dan menghasilkan peningkatan performa elektrokimia. Di sisi lain, MnO2 memiliki nilai kapasitansi yang tinggi, dan kestabilan kimia yang baik sehingga bisa diaplikasikan sebagai pseudocapacitor. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan volume H3BO3 1M (2 ml, 4 ml, dan 6 ml) pada proses sintesis komposit B-rGO/MnO2 untuk aplikasi superkapasitor hybrid. Penelitian dimulai dengan proses sintesis rGO menggunakan metode modifikasi Tour. Langkah selanjutnya adalah doping boron ke rGO dan proses pembuatan komposit B-rGO/MnO2. Pengujian karakterisasi yang dilakukan yaitu XRD, FTIR, dan SEM-EDX. Sedangkan pengujian performa elektrokimia meliputi CV, EIS, dan GCD. Berdasarkan hasil pengujian karakterisasi material, penambahan H3BO3 mempengaruhi nilai dspacing menjadi semakin besar yang mengindikasikan semakin banyak atom boron yang tersubstitusi. Hasil EDX menunjukkan bahwa variasi penambahan paling efisien pada 4 ml yaitu sebesar 3.24 wt%. Berdasarkan hasil pengujian CV, nilai kapasitansi yang terbesar dan stabil diperoleh variasi komposit dengan 4 ml sebesar 26.666 Fg-1 . Disertai juga dengan pengujian EIS dan GCD, nilai kapasitansi terbesar diperoleh variasi 4 ml dengan kapasitansi sebesar 23.006 Fg-1 dan 42.319 Fg-1 , dengan nilai konduktivitas sebesar 0.178 Sm-1 .
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The need for energy storage increases over time and the development of the times, many innovations or research conducted in order to obtain the latest energy storage devices. At this time the energy storage device commonly used is battery and supercapacitor. Supercapacitors are divided into 3 namely Electric Double Layer Capacitors (EDLC), Pseudocapacitors, and Hybrid Supercapacitors. EDLC is composed of carbon-based materials such as Reduced Graphene Oxide (rGO) which has a high surface area. However, the lack of conductivity is low, so it needs to be done. One material that can be used for doping is boron. Boron is considered to increase conductivity so as to increase electron transfer and produce an increase in electrochemical performance. On the other hand, MnO2 has a high capacitance value properties, and good chemical stability so that it can be applied as a pseudocapacitor. This study aims to determine the effect of adding 1m H3BO3 volume (2 ml, 4 ml, and 6 ml) in the B-rGO/MnO2 composite synthesis process for hybrid supercapacitor applications. The study begins with the rGO synthesis process using the tour modification method. The next step is doping boron to rGO and the process of making B-rGO/MnO2 composite. The characterization tests carried out are XRD, FTIR, SEM-EDX, and TEM. While testing electrochemical performance includes CV, EIS, and GCD. Based on the result of the material characterization test, the addition of H3BO3 affects the dspacing value to be greater which indicates more and more substituted boron atoms. The EDX results showed that the most efficient addition variation was at 4 ml which was 3.24 wt%. Based on CV test result, the largest and most stable capacitance value was obtained for the composit variation with 4m ml of 26.666 Fg-1. Accompanied by the EIS and GCD test, the largest capacitance value was obtained by a 4 ml variation with capacitance of 23.006 Fg-1 and 42.319 Fg-1 with a conductivity value of 0.178 Sm-1.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Boron, Doping, Komposit B- rGO/MnO2, Superkapasitor hybrid, B- rGO/MnO2 composite, Hybrid supercapacitors
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ165 Energy storage. T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Angjelo Pirade
Date Deposited:	13 Feb 2023 17:07
Last Modified:	13 Feb 2023 17:07
URI:	http://repository.its.ac.id/id/eprint/97179

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