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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Penelitian Hasil Hutan Jurnal Kimia dan Kemasan PROSIDING SEMINAR KIMIA IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Indonesian Journal of Chemical Science Jurnal Sains Teknologi dan Lingkungan (JSTL) Indonesian Journal of Chemistry Jurnal Farmamedika (Pharmamedica Journal) Jurnal Penelitian Hasil Hutan Jurnal Kimia dan Kemasan Warta AKAB Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Penelitian Hasil Hutan Helium: Journal of Science and Applied Chemistry
Armi Wulanawati
Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, IPB University, Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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Membrane Electrode Assembly Based on Sulfonated Polysulfone-Activated Zeolite Composite Membrane for Fuel Cell Applications Armi Wulanawati; Sri Mulijani; Yoki Yulizar
Jurnal Kimia Sains dan Aplikasi Vol 29, No 1 (2026): Volume 29 Issue 1 Year 2026
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.29.1.39-45

Abstract

The depletion of fuel cell reserves shows the need for alternative energy sources. In this context, fuel cells provide a promising solution, generating power without emissions. The membrane electrode assembly (MEA) in fuel cells is a critical component to maximize combustion efficiency. Therefore, this study aims to develop MEA using a composite membrane based on sulfonated polysulfone-activated zeolite (PSfs-Z). The membrane was obtained by first sulfonating polysulfone (PSf) and then adding activated zeolite. Optimum fuel performance was achieved with the activated zeolite using 3 N HCl. Sulfonation was completed, as demonstrated by a sulfonation degree of 32.63%. The absorption bands of the SO2 group vibration from SO3H of PSfs were identified at a wave number of 1111.00 and 1259.33 cm−1. The successful formation of MEA was confirmed by its morphology, as observed using a scanning electron microscope, with the formation of a catalyst layer and a membrane in the cross-section. The highest proton conductivity and cell potential obtained for PSfs-Z 3 N MEA were 0.01727 S.cm−1 and 330 mV, respectively. This means the membrane electrode assembly based on a sulfonated polysulfone-activated zeolite composite membrane has a higher potential than the
Green Synthesis and Formation of Silica Nanoparticles Based on Natural Spondias mombin Leaf Extract for Renewable Energy Materials Armi Wulanawati; Yoki Yulizar; Sri Mulijani
Helium: Journal of Science and Applied Chemistry Vol. 6 No. 1 (2026): Helium: Journal of Science and Applied Chemistry
Publisher : Study Program of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v6i1.37

Abstract

Silica is an abundantly available material, with applications including renewable energy materials (fuel cells). Silica has been produced using natural materials (green synthesis) to form smaller and more stable particles, primarily due to the influence of secondary metabolites such as those contained in the leaf of Spondias mombin, a species of flowering plants from Lannea coromandelica (Houtt.) Merr and the family Anacardiaceae. The characteristics of silica nanoparticles obtained by green synthesis using the Spondias mombin leaf in a water fraction at 0,6 % were identified using XRD, FTIR, PSA, TGA, SEM, and TEM. Based on the XRD pattern and SEM/TEM images, the nanoparticle is amorphous and has a particle size of 20-30 nm, smaller than that of its precursor, which is 37.6 nm. There are Si-OH and Si-O-Si groups in the FTIR spectrum as an indication of the interaction between silica nanoparticles and secondary metabolites, and the zeta potential based on PSA is -45.9 mV. This indicates that silica nanoparticles have good stability and are supported by high thermal stability based on the results of the TGA analysis. This is correlated with its use as a material composite in renewable energy (fuel cells).
Co-Authors Alifah J Za’ani Alifiana F Damayanti Amalia, Annissa Ayu Romawati Ayu Romawati, Ayu Cahyotomo, Anom Charlena Chelsea Epriyani Deswita Deswita Deswita Deswita Deswita Deswita Djeni Hendra Djeni Hendra Djeni Hendra Elline Sutanto Fachrurrazie, Fachrurrazie Fadli Rohman Hairunnisa Hairunnisa Harry Noviardi Heru Satrio Wibisono Heru Satrio Wibisono, Heru Satrio Heru Wibisono Islami, Yosianda Andusia Kamela Gustina Kamela Gustina Kamela Gustina, Kamela M Farhan Muhamad Sholehuddin Malik Ibrohim Muhamad Sholehuddin Malik Ibrohim Muhammad Eggy Fahlevy Muhammad Sholehuddin malik Ibrohim Najla Amelia Nyi Raden Alyaa S Eryaputri Panglipur, Hanum Sekar Raditha N Putri Sari, Silvia Mekar Shilvia Fetria S Sinaga, Friska Wati Siti Triannisa Sitorus, Mido Ester Solihat, Imas Sri Mulijani Sudirman Sudirman Sulistioso Giat S. Sulistioso Giat S. Sulistioso GS Sulistioso GS Tetty Kemala Tirta, Ardina Purnama Untung, Joko Yoki Yulizar Yoki Yulizar Yoki Yulizar