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All Journal Electrician : Jurnal Rekayasa dan Teknologi Elektro
Alexander Sembiring
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Control & Systems Engineering Electrical & Electronics Engineering Engineering

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Material Selection for Battery Cell Casings Based on LCA and Steady‑State Thermal Performance (Comparative Analysis) Fauzi Ibrahim; Teuku Marjuni; Rina Febrina; Agus Apriyanto; Novia Utami Putri; Retno Wahyudi; Alexander Sembiring; Adam Wisnu Murti
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 20 No. 3 (2026)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v20n3.2968

Abstract

This study evaluates eight materials for 18650 cylindrical battery casings by coupling a cradle‑to‑gate Life Cycle Assessment (LCA, A1–A3) with a steady‑state radial heat‑transfer model that integrates thin‑wall conduction and external convection. Candidates include Ni‑plated low‑carbon steel, stainless steel 304, aluminum 6061, high‑recycled aluminum (70% secondary content), polypropylene, polycarbonate, GFRP, and CFRP. Minimum wall thickness is set by a 0.5 MPa design pressure with a safety factor of 2 (≥0.15 mm for metals; 0.7 mm for polymers/composites). Simulations at a 5 W heat load for h = 50 W/m²K (forced) and h = 10 W/m²K (natural) show that external convection dominates total thermal resistance; under forced convection, ΔT spans 26.7–29.9 K with <1% variation among metals. From the LCA, per‑casing carbon footprints range from ≈6.4 gCO₂e (Ni‑plated steel) to ≈74 gCO₂e (CFRP). Pareto and MCDA place Ni‑plated steel and high‑recycled aluminum on the optimal frontier when ΔT, mass, and GWP are considered together. The key insight is that improving the convective coefficient (via airflow/interface design) is far more effective at lowering temperature than substituting casing materials, while material circularity (recycled content) delivers larger climate benefits than marginal conductivity gains.
Design and Implementation of a Dual Axis Solar Tracker System Based on Arduino Uno for Solar Power Plants (PLTS) on Fishing Boats (Case Study: Sukajaya Lempasing, Teluk Pandan District, Pesawaran, Lampung) Novia Utami Putri; Agus Apriyanto; Fauzi Ibrahim; Retno Wahyudi; Alexander Sembiring; Adam Wisnu Murti; sasmita; iqbal shofwan
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 20 No. 3 (2026)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v20n3.3221

Abstract

The use of electrical energy on fishing boats in Sukajaya Lempasing still relies on gasoline-fueled generators, resulting in high operational costs. Meanwhile, the potential for solar energy in the area is quite large, but the use of solar panels is still unable to capture sunlight optimally because it cannot follow changes in the sun's position. To overcome this problem, this study developed a dual-axis solar tracker system based on Arduino UNO that allows the panel to move following the direction of sunlight both horizontally and vertically. Based on the results of testing for five days, the system was able to produce an average voltage of 14.79 V, an average current of 3.85 A and an average power of 56.9 W according to the principle in equation 2. The total energy obtained each day reached 575.74 Wh and was able to fully charge a 12 V 35 Ah battery in approximately 7 hours in sunny conditions. The stored energy was used to power LED lights through an inverter with an average power of 12.89 W and a usage duration of 10-11 hours at night. These results prove that dual-axis solar trackers can increase the effectiveness of solar energy absorption and reduce the use of generators on fishing vessels, making them more economical and environmentally friendly.
Co-Authors Adam Wisnu Murti Agus Apriyanto Agus Apriyanto Febrina, Rina Ibrahim, Fauzi iqbal shofwan Novia Utami Putri Novia Utami Putri Retno Wahyudi Sasmita Teuku Marjuni