Analisis Penggunaan NaOH Dalam Alkaline Etching Terhadap Sintesis MXene Dan Performa Elektrokimia Sebagai Elektrode Superkapasitor

Putra, Ardana Wastu Army (2026) Analisis Penggunaan NaOH Dalam Alkaline Etching Terhadap Sintesis MXene Dan Performa Elektrokimia Sebagai Elektrode Superkapasitor. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini berfokus pada optimalisasi sintesis MXene melalui metode alkaline etching menggunakan NaOH sebagai alternatif ramah lingkungan pengganti HF. Ti₃AlC₂ disintesis dengan larutan NaOH (5 M, 7,5 M, dan 10 M) melalui proses hidrotermal pada 180°C selama 45 menit dalam atmosfer Ar, kemudian dilakukan pencucian, freeze-drying, delaminasi DMSO, dan interkalasi NaOH. Karakterisasi XRD, BET, SEM-EDX digunakan untuk mengevaluasi perubahan struktur, morfologi, dan komposisi material, sedangkan kinerja elektroda diuji melalui EIS, CV, dan GCD. Hasil menunjukkan bahwa peningkatan konsentrasi NaOH memengaruhi struktur kristal MXene, ditandai dengan penurunan ukuran kristal dari MAXene (64,858 nm) menjadi MXene 5M (46,022 nm) dan 7,5–10M (~36,8 nm), serta penurunan kandungan Al yang menunjukkan proses etching parsial. Perlakuan delaminasi DMSO dan interkalasi NaOH belum optimal sehingga menyebabkan restacking, ditunjukkan oleh penurunan luas permukaan BET pada D-MXene 7,5M (55,283 m²/g) dan I-MXene 7,5M (16,407 m²/g). Elektroda terbaik diperoleh pada D-MXene 10M dengan kapasitansi spesifik GCD sebesar 2,085 F/g pada 0,5 A/g.
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This study focuses on the optimization of MXene synthesis through alkaline etching method using NaOH as an environmentally friendly alternative to HF. Ti₃AlC₂ was synthesized with NaOH solution (5 M, 7.5 M, and 10 M) through a hydrothermal process at 180°C for 45 minutes in Ar atmosphere, followed by washing, freeze-drying, DMSO delamination, and NaOH intercalation. XRD, BET, SEM-EDX characterizations were used to evaluate changes in structure, morphology, and composition of the material, while electrode performance was tested through EIS, CV, and GCD. The results showed that increasing NaOH concentration affected the crystal structure of MXene, characterized by a decrease in crystal size from MAXene (64.858 nm) to MXene 5M (46.022 nm) and 7.5–10M (~36.8 nm), as well as a decrease in Al content indicating a partial etching process. The DMSO delamination and NaOH intercalation treatments were not optimal, causing restacking, indicated by a decrease in the BET surface area of D-MXene 7.5M (55.283 m²/g) and I-MXene 7.5M (16.407 m²/g). The best electrode was obtained on D-MXene 10M with a GCD specific capacitance of 2.085 F/g at 0.5 A/g.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Alkaline etching, MAXene, MXene, NaOH, superkapasitor, Alkaline etching, MAXene, MXene, NaOH, supercapacitor
Subjects:	Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis T Technology > TJ Mechanical engineering and machinery > TJ165 Energy storage. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872.C65 Supercapacitors. T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 27101-(S2) Master Thesis
Depositing User:	Ardana Wastu Army Putra
Date Deposited:	24 Jul 2026 01:42
Last Modified:	24 Jul 2026 01:42
URI:	http://repository.its.ac.id/id/eprint/136903

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