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All Journal Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Nadira Ghina Azzahra
Institut Teknologi Perusahaan Listrik Negara
Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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Pengaruh Material Elektroda dan Variasi Elektrolit terhadap Kinerja Elektrolisis Air pada Arus 10–50 A dalam Sistem Skala Kecil Nadira Ghina Azzahra; Muhammad Ridwan; Lia Nur Octavia; Rudina Okvasari
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 5 No. 2 (2026): Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v5i2.6062

Abstract

The growing demand for clean energy sources has driven the development of efficient hydrogen production technologies, one of which is water electrolysis. The performance of electrolysis systems is influenced by various parameters; however, understanding of the dominant factors in small-scale systems remains limited. This study aims to examine the effects of electrolyte type (NaOH, KOH, and NaCl), electrolyte concentration (1N–5N), electrode material (stainless steel 316 and aluminum), and electrode thickness on the performance of water electrolysis under electric current variations of 10–50 A. System performance was evaluated based on the volume of gas produced within a fixed operating time of 5 minutes. The results indicate that increasing electric current consistently enhances the volume of gas generated under all experimental conditions. Nevertheless, differences in system performance are more strongly influenced by electrolyte characteristics than by other parameters. The KOH electrolyte produced the highest gas volume across all current variations, with an increase of approximately ±10–15% compared to NaOH and ±20–30% compared to NaCl. Increasing electrolyte concentration improved performance up to a certain limit before mass transport limitations occurred. Overall, system performance is more strongly governed by electrolyte type and concentration than by electrode characteristics, indicating that electrolyte-based optimization is a more effective approach.
Co-Authors Lia Nur Octavia Muhammad Ridwan Rudina Okvasari