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All Journal International Journal of Evaluation and Research in Education (IJERE) Cakrawala Pendidikan Jurnal Penelitian Sains (JPS) Jurnal Natur Indonesia JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Edukasi: Jurnal Pendidikan dan Pengajaran Berkala Ilmiah Pendidikan Fisika Jurnal Penelitian Sains (JPS) Jurnal Inovasi dan Pembelajaran Fisika Science and Technology Indonesia Jurnal Penelitian Sains JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Ilmiah Pendidikan Fisika Jurnal Pendidikan Fisika dan Keilmuan (JPFK) JURNAL EKSAKTA PENDIDIKAN (JEP) JPF : JURNAL PENDIDIKAN FISIKA Kasuari: Physics Education Journal (KPEJ) DIFFRACTION: Journal for Physics Education and Applied Physics Unram Journal of Community Service (UJCS) Jurnal PRIMED:Primary Education Journal atau Jurnal Ke-SD An JIFP (Jurnal Ilmu Fisika dan Pembelajarannya) Makara Journal of Science Indonesian Journal of Education Research (IJoER) Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Jurnal Pendidikan MIPA
Ida Sriyanti
Pendidikan Fisika FKIP, Universitas Sriwijaya
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Journal : Science and Technology Indonesia

 1 
Preparation of PAN/PVDF Nanofiber Mats Loaded with Coconut Shell Activated Carbon and Silicon dioxide for Lithium-Ion Battery Anodes Almafie, Muhammad Rama; Dani, Rahma; Riyanto; Marlina, Leni; Jauhari, Jaidan; Sriyanti, Ida
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.427-447

Abstract

Utilizing carbon materials derived from natural biomass holds significant promise for battery applications, owing to their low cost, abundant availability, and environmentally sustainable characteristics. However, graphite anode materials do not meet the demands of efficient batteries. Coconut shell waste has the potential to be used as activated carbon in energy storage anodes. By adding silicon dioxide (SiO2) to maintain structural stability and electrochemical reaction kinetics, the advantages of CCS can be maximized. Polyacrylonitrile/polyvinylidene fluoride (PAN/PVDF) composite polymer was used as a matrix to embed CCS/SiO2 and synthesize nanofibers via electrospinning. The resulting nanofibers had diameters ranging from to 575–707 nm, with cross-linked, porous, and beadless characteristics. Mechanical properties were measured by single-fiber micro tensile tests. The young modulus, tensile strength, and toughness of each nanofiber were successfully maintained at 13.7 ± 0.4 MPa, 34.4 ± 0.1 MPa, and 982 ± 10 kJ/m3, respectively, because of the presence of a β-crystal growth layer that facilitated efficient stress transmission. The reduction-oxidation process response had a potential difference of less than 1.286 V in the first cycle, whereas for the third and fifth cycles, it was maintained below 3.416 V. The lithium-ion diffusion coefficient was below 4.73×1013 cm2/s. Using the anode directly, as in lithium-ion batteries, provided a high capacity of 382 mAh/g after 200 cycles. Good cycle stability, with over 98% retention of the initial capacitance after 200 charge/discharge cycles, underscores its potential for application in lithium-ion batteries.
Synthesis and Characterization of Polyvinyl Alcohol (PVA) Nanofiber Membranes with Annonamuricata and Terminalia catappa Leaf Extract Fitria, Silfiyana; Almafie, Muhammad Rama; Alfikro, Ihsan; Monado, Fiber; Sriyanti, Ida; Royani, Idha
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.837-846

Abstract

Polyvinyl alcohol (PVA) is hydrophilic, flexible, elastic, and environmentally friendly, leading to the wide use as a binder in nanofiber matrices. The nanofibers of PVA are frequently combined with extract possessing antibacterial properties for characterization. Therefore, this study aimed to produce PVA nanofibers incorporating soursop leaf extract (ALE) and catappa leaf extract (CLE) using electrospinning for the investigation of the physicochemical, mechanical, and antibacterial properties. Electron microscopy showed that the electrospun nanofibers had a yellowish-brown surface with diameters ranging from 962 nm to 1323 nm. Fourier Transform Infrared (FTIR) analysis revealed the presence of functional groups interacting through hydrogen bonding, leading to a shift in wavenumbers. The tensile strength of PAC-1, PAC-2, and PAC-3 nanofibers decreased from 8.46 MPa to 4.27 MPa, followed by a reduction in Young’s modulus from 20.2 MPa to 0.89 MPa. The effect of extract concentration on the reduction in tensile strength and Young’s modulus was related to aggregation in certain areas of the nanofibers and weakened intermolecular polymer interactions. Pure extract had strong antibacterial activity and nanofiber membranes had moderate activity with inhibition zones ranging from 12.3 to 16.8 mm and 8.0 to 14.4 mm, respectively. The results showed that the produced fibers could be used in the biomedical field for wound dressings and filtration, as well as in textiles.
Co-Authors Afifa, Mardiah Agung Mataram Agustini, Meily P Aldi, Muhamad Abel Kirana Alfikro, Ihsan Alisya, Rona Almafie, Muhammad Rama Anida Chairatunnisa Anissa Arianti Anjani, Rahma Putria Anjarwati, Nova Apit Fathurohman Ardi Aulia, Dwi Marwa Azhari, M. Aswa Cecil Hiltrimartin Chairunnisa Chairunnisa Dani, Rahma Effendi Effendi Eka Supriasih Feri Iskandar Feri Iskandar Fiber Monado Fitonia, Allika Fitria, Silfiyana Gelby Pradina Paramitha Gelby Pradina Paramitha Hapizah Idha Royani Idjan, Meutia Kamilatun Nuha Ap Iful Amri Innas Amalia Utami Ismet Ismet Ismet Ismet Ismet, Ismet Jaidan Jauhari Juliansyah, Dendi Kartikasari, Meri Ketang Wiyono Khairurijal . Khairurijal Khairurijal Khotimah, Masayu Husnul Kurdiati, Lintang Auliya Leni - Marlina Leni Marlina Leni Marlina Leni Marlina Lia Apriliana Ludiansyah, Anggi M Rama Almafie M Rudi Sanjaya Maharani, Senandung Citra Maknun, Lu’luil Maylen, Venny Meilinda Meilinda Meilinda Meilinda Meily P Agustini Meily Putri Agustini Meitaza, Dariah Melly Ariska MEURETTA ALAWIYAH PULUNGAN Meutia Kamilatun Nuha Ap Idjan Mikrajuddin Abdullah Muhamad Yusup Mutiara Meiwandari Nadia, Hartisyah Noviana, RA Sania Nugraha, Yuda Prasetya Nuriz Dariyani Nyimas Aisyah Nyimas Aisyah Patriot, Evelina Astra Pratiwi, Mia Marsela Pratiwi, Nadirra Pulungan, Meuretta Alawiyah Puteri, Anisya Sefina Putri, Apriliski Amanda Radiyati Umi Partan Radiyati Umi Partan, Radiyati Umi RAFLI PANDU RAMADHANI Rahayu, Anita Yuza Rahman, Nor Farahwahidah binti Abdul Rahman, Nor Farawahidah Abdul Rahmanita Ramadhona, Tyse Ratu Ilma Indra Putri Rayhanu, Ashfi Rina Aprilia Ritonga, Ahmad Fitra Riyanto Rosdiana Rosdiana Ryatanti, Nyimas Edwilliyah Sanjaya, M Rudi Sanjaya, Muhammad Rudi Sari, Nur Azizah Purnama Sary Silvhiany Sela, Melinia Sudirman, Sudirman Sukemi Sukemi Supriasih, Eka Syahputri, Selvia Mariska Syamsiar, Syamsiar Syntia, Miranda Putri Syuhendri, Syuhendri Ujang Supriyadi Wahyu Indra Bayu Wiyono*, Ketang Yuda Prasetya Nugraha Zainuddin Nawawi Zulkardi Zulkardi Zulkarnain, Nur Najihah Binti