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Iman Santoso
Universitas Negeri Yogyakarta
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Journal : journal of multidisciplinary applied natural science

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Enhancing Supercapacitor Cell Capacitance through Liquid-Phase Exfoliation Synthesis of Graphene Pratama, Buky Wahyu; Suhendar, Haris; Dwandaru, Wipsar Sunu Brams; Santoso, Iman
Journal of Multidisciplinary Applied Natural Science Vol. 5 No. 2 (2025): Journal of Multidisciplinary Applied Natural Science
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.2774-3047.254

Abstract

Our study investigates the remarkable capacitance performance of a supercapacitor cell featuring electrodes synthesized through the liquid-phase exfoliation (LPE) method using environmentally friendly linear alkylbenzene sulfonate (LAS) surfactant. We explored different synthesis temperatures (15, 30, and 90 °C) to evaluate their impact on reducing sonication time. The electrodes, created by drop-casting graphene onto a silver plate substrate and heated at 50 °C, demonstrated exceptional cyclic voltammetry (CV) and charging-discharging (CD) results. Notably, the graphene synthesized at 90 °C exhibited a maximum capacitance of 59 F/g at a 13 mV/s scan rate in a 1.3 M KOH electrolyte gel, leading to superior energy density as shown in the Ragone plot. Our findings highlight the crucial role of increased synthesis temperature in LPE, enhancing supercapacitor cells through the expansion of sp2-ordered grain size, evident in the Raman shift data's ID/IG increase.
Co-Authors Aditya Rikfanto Ahmad Marzuki Arifah, Rifa Rifkiati aseptiana parmawati, aseptiana Cahyoko Edi Tando Chelsea Saint Dewanti, Ageis Triya Dian Swandayani Dian Swandayani Diyan Fatimatuz Zahro Duduh Sunandar Efransyah Efrita Norman Eka Fitriyana Evita Aulia Nur Rohmah Hafdarani Haris Suhendar Hidayat, Muhammad Fauzy Fachrullah Isti Haryati Itaar, Faldy Fernando Iwa Lukmana Iwa Lukmana Maharaja, Andi Aldin Mahendra, Andi Muhammad Alifza Mahfuddin, Mahfuddin Manawati Maria Ulfah Masyhudzulhak Djamil Mulyani, Retna Endah Sri Mulyati, Retna Endah Sri Musa Hubeis Nuari, Feby Nabiilah Nurhadi Nurhadi Pratama, Buky Wahyu Putri, Fadhila Bestary Putri, Rheifani Salsabila Rahim, Zaki Raisa Zukhrufa, Hana Ramadhanty, Desti Retna Endah Sri Mulyati Retna Endah Sri Mulyati Riansyah, Muhammad Ridho Rifani, Denny Nazaria Santoso, Ovy Haniffauzi Zahid Saputra, Bagas Sara, I Wayan Windu Setiawan, Achmad Gilang Siti Khairunnisa, Siti Sri Megawati Suciahesti, Fenny Nur Sudarmaji Sudarmaji SUDARMAJI SUDARMAJI Sudarmaji Sudarmaji Sujatno, Adi Suprapto, Imam Suratni Suratni Syahrullah Syahrullah Syihabuddin Syihabuddin Taba, Tegar Aria Tifaldi, Riska Guniar Ummami, Titah Arkanul Wahyuningtias, Seftyana Utami Wasdili, Arni Rahmah Widia, Wida Wipsar Sunu Brams Dwandaru Yanuarti Apsari Yolanda Azahra