Analisis Pengaruh Konsentrasi Naoh Dan Volume Pelarut Dmso Terhadap Sintesis Mxene Ti₃C₂Tₓ Serta Performa Elektrokimia

Putra, Mohammad Zaidan Bahriansyah (2026) Analisis Pengaruh Konsentrasi Naoh Dan Volume Pelarut Dmso Terhadap Sintesis Mxene Ti₃C₂Tₓ Serta Performa Elektrokimia. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu strategi untuk meningkatkan efisiensi penyimpanan energi adalah menggunakan superkapasitor, yang memiliki densitas daya tinggi dan stabilitas siklus yang luar biasa, serta proses charge-discharge yang sangat cepat. Superkapasitor, yang juga disebut ultrakapasitor dan kapasitor elektrokimia, telah diakui sebagai perangkat penyimpanan energi canggih yang menjanjikan. Telah dilakukan penelitian untuk menganalisis pengaruh konsentrasi NaOH dan volume pelarut DMSO terhadap sintesis Ti₃C₂Tₓ MXene sebagai elektroda superkapasitor. Ti₃C₂Tₓ MXene disintesis dari fase Ti₃AlC₂ MAX menggunakan metode etsa hidrotermal alkali dengan konsentrasi NaOH yang berbeda (27.5 M dan 31.5 M) pada suhu 280°C selama 15 jam, dan selanjutnya dilakukan delaminasi menggunakan volume DMSO 2.5 mL hingga 5 mL. Struktur dan morfologi dikarakterisasi dengan X-Ray Diffraction (XRD), Scanning Electron Microscopy - Energy Dispersive X-Ray (SEM-EDX). Dalam hasil XRD, pergeseran puncak yang menandakan keberhasilan pada perlakuan etsa dan peningkatan jarak antar lapisan MXene. Citra SEM-EDX mengkonfirmasi struktur lembaran MXene yang khas dengan distribusi unsur yang homogen, dan data BET menunjukkan peningkatan luas permukaan spesifik setelah prosedur etsa dan delaminasi. Data CV menunjukkan bahwa kapasitansi spesifik dapat ditingkatkan lebih lanjut dengan penyesuaian bertahap konsentrasi NaOH dan volume DMSO, dengan nilai tertinggi diperoleh pada MXene yang dietsa menggunakan 27.5 M NaOH dan 2.5 mL DMSO. Pengukuran EIS frekuensi rendah (0,01 Hz) memberikan resistansi terendah sebesar 222.03 Ω·cm² pada sudut fase 60.72° dan konduktivitas tertinggi sebesar 0.045 S·m⁻¹, sedangkan penambahan DMSO yang berlebihan menyebabkan resistansi sistem yang lebih tinggi. Pengukuran charge-discharge galvanostatik (GCD) pada kerapatan arus 0.5 A·g⁻¹ menunjukkan kinerja charge-discharge yang stabil dengan kurva yang hampir simetris dan kapasitansi pengosongan sebesar 22.29 F·g⁻¹. Hasil penelitian ini menunjukkan bahwa etsa dan delaminasi dengan komposisi yang tepat memberikan dampak penting dalam meningkatkan kinerja elektrokimia Ti₃C₂Tₓ MXene sebagai elektroda superkapasitor, dengan sampel hasil etsa NaOH 27.5 M dan delaminasi 2.5 ml DMSO sebagai material dengan performa terbaik.
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The strategy for improving energy storage efficiency is to use supercapacitors, which have high power density and exceptional cycle stability, as well as very fast charging and discharging processes. Supercapacitors, also known as ultracapacitors and electrochemical capacitors, have been recognized as promising advanced energy storage devices. Research has been conducted to analyze the effect of NaOH concentration and DMSO solvent volume on the synthesis of Ti₃C₂Tₓ MXene as a supercapacitor electrode. Ti₃C₂Tₓ MXene was synthesized from the Ti₃AlC₂ MAX phase using an alkaline hydrothermal etching method with different NaOH concentrations (27.5 M and 31.5 M) at 280°C for 15 hours, followed by delamination using 2.5 mL to 5 mL of DMSO. The structure and morphology were characterized by X-Ray Diffraction (XRD) and Scanning Electron Microscopy - Energy Dispersive X-Ray (SEM-EDX). The XRD results showed a shift in the (002) peak, indicating successful etching and an increase in the interlayer spacing of MXene. The SEM-EDX image confirmed the characteristic MXene sheet structure with homogeneous element distribution, and the BET data showed an increase in specific surface area after the etching and delamination procedures. CV data showed that the specific capacitance could be further increased by gradually adjusting the NaOH concentration and DMSO volume, with the highest value obtained for MXene etched using 27.5 M NaOH and 2.5 mL DMSO. Low-frequency (0.01 Hz) EIS measurements yielded the lowest resistance of 222.03 Ω·cm² at a phase angle of 60.72° and the highest conductivity of 0.045 S·m⁻¹, while excessive DMSO addition resulted in higher system resistance. Galvanostatic charge-discharge (GCD) measurements at a current density of 0.5 A·g⁻¹ showed stable charge-discharge performance with an almost symmetrical curve and a discharge capacitance of 22.29 F·g⁻¹. The results of this study indicate that etching and delamination with the right composition have a significant impact on improving the electrochemical performance of Ti₃C₂Tₓ MXene as a supercapacitor electrode, with samples etched with 27.5 M NaOH and delaminated with 2.5 ml DMSO as the best performing materials.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	MXene, MXene, NaOH, NaOH, Supercapacitor, Supercapacitor, Alkaline Etching, Alkaline Etching.
Subjects:	Q Science > QD Chemistry > QD115 Electrochemical analysis T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2941 Storage batteries
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Mohammad Zaidan Bahriansyah Putra
Date Deposited:	22 Jan 2026 03:48
Last Modified:	22 Jan 2026 03:48
URI:	http://repository.its.ac.id/id/eprint/130057

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