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All Journal SEMIRATA 2015 Journal of Engineering and Technological Sciences
Mohamad Deraman, Mohamad
Pusat Pengajian Fizik Gunaan, Fakulti Sains dan Tekhnologi, Universiti Kebangasaan Malaysia, 43600 Bangi, Selangor, Malaysia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering

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PERFORMA SEL SUPERKAPASITOR DENGAN MENGGUNAKAN PENGUMPUL ARUS STAINLESS STEEL-NANOPARTIKEL PLATINUM Farma, Rakhmawati; Deraman, Mohamad; Awitdrus, Awitdrus
SEMIRATA 2015 Prosiding Bidang Fisika
Publisher : SEMIRATA 2015

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.104 KB)

Abstract

Performa sel superkapasitor sangat ditentukan oleh tiga faktor utama yaitu elektrolit,  pengumpul arus dan elektroda. Elektroda karbon aktif yang disediakan dari pra- karbonisasi serabut tandan kosong kelapa sawit dengan perlakuan KOH. Karbonisasi elektroda dilakukan pada suhu 800oC menggunakan profil pemanasan multi-langkah dalam lingkungan gas N2 dan pengaktifan CO2 dilakukan pada suhu 800oC selama 3 jam. Larutan 1 M H2SO4 digunakan sebagai larutan elektrolit. Steinless Steel 316L yang telah ditumbuhkan nanopartikel platinum di atasnya digunakan sebagai pengumpul arus. Penumbuhan nanopartikel platinum di atas pengumpul arus bertujuan untuk menghasilkan sifat listrik dan elektrokimia yang lebih baik. Evaluasi terhadap nanopartikel platinum di atas pengumpul arus dilakukan dengan difraksi sinar-X yang ditandai dengan kehadiran puncak platinum (111) dan analisis energi dispersif sinar-X dengan persentase atomik platinum 3.89 %. Nilai kapasitansi sel superkapasitor berdasarkan data spektroskopi impedansi elektrokimia sebelum dan setelah penumbuhan nanopartikel platinum masing-masing sebesar 104.87 F/g dan 114.67 F/g, dan nilai hambatan seri ekuivalen menurun dari 0.438 W menjadi 0.045 W. Katakunci: Superkapasitor, Spektroskopi impedansi elektrokimia, Kapasitansi spesifik, nanopartikel platinum
Developing Carbon Nanofibers from Gnetum Gnemon Linn Pericarp Using Dual Activators KOH And Melamine as Innovative Electrode Materials for Supercapacitors Farma, Rakhmawati; Putri, Hardini Chania; Apriyani, Irma; Azwat, Luqyana Adha; Awitdrus, Awitdrus; Deraman, Mohamad; Rini, Ari Sulistyo; Setiadi, Rahmondia Nanda; Taer, Erman
Journal of Engineering and Technological Sciences Vol. 57 No. 6 (2025): December 2025 (In Progress)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.6.2

Abstract

Synthesis of carbon nanofibers from Gnetum gnemon Linn (GP) biomass with dual activators, KOH and melamine, offers a potential approach for high-performance supercapacitor electrodes. This study evaluated the preparation of GP-based carbon nanofibers through single and double activation, with varying melamine masses of 0.1, 0.3, and 0.5 g at 0.3 M KOH. The pyrolysis (integrated carbonization and physical activation) occurred at 600°C in N₂ and 800°C in CO₂ atmospheres. The material was activated using 0.3 g of melamine in 0.3 M KOH to produce abundant and highly amorphous nanofiber structures. These characteristics contributed to the high specific capacitance of 400 F/g at a scan rate of 1 mV/s and an energy density of 17 Wh/kg at a power of 465 W/kg. These results demonstrated the synergistic effect of melamine and KOH in increasing the active surface area and structural conductivity. This finding confirms the potential of GP biomass that has not been optimally utilized as a sustainable precursor for energy storage applications, especially supercapacitors.
Co-Authors Apriyani, Irma Awitdrus Awitdrus, Awitdrus Azwat, Luqyana Adha Erman Taer Putri, Hardini Chania Rahmondia N. Setiadi Rakhmawati Farma Rini, Ari Sulistyo