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All Journal Jurnal Material dan Energi Indonesia Jurnal Ilmu dan Inovasi Fisika
Rahmah, Dewi Anisa
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Computer Science & IT Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology

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Nickel/Cobalt/Manganese Influence to Coulombic/Retention/Capacity Efficiency in Light Electric Vehicle (Lev) Battery Lifecycle: Sistematic Literature Review Rahmah, Dewi Anisa; Hidayat, Sahrul
JIIF (Jurnal Ilmu dan Inovasi Fisika) Vol 10, No 1 (2026)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jiif.v10i1.68348

Abstract

The global energy transition driven by the challenges of climate change and the mitigation of greenhouse gas emissions has positioned Light Electric Vehicles (LEVs) as a strategic mobility solution in urban environments. The reliability and sustainability of LEV fundamentally depend on the optimization of lithium-ion battery technology, specifically the composition of NCM (Nickel/Cobalt/Manganase) cathode materials. This systematic literature review aims to critically analyze the relationship between the ratio of the elements Ni, Co and Mn to three electrochemical performance metrics, namely specific capacity, Coulombic Efficiency (EC) and capacity retention in the battery life cycle. The PRISMA methodology was applied to identify and screen relevant literature resulting in 12 studies that were included in the analysis. The results of the data review show that there is a fundamental performance dilemma (trade-off) in the NCM cathode. Nickel (Ni) serves as a high specific capacity driver that reaches 220 . However, the proportion of Ni-rich 0.90 to 0.95 is able to increase the sensitivity of the material thereby triggering extreme performance fluctuations and decreased retention due to cation maxing and volumetric instability of the lattice. Meanwhile, Manganase (Mn) and Cobalt (Co) act as structural stabilizers. Mn shows a U-shape performance pattern on EC and retention with a concentration of Mn 0.35 achieves an optimal EC performance of 93%. For Co, a low concentration of 0.05 provides the best balance between EC 93% and capacity retention of 95% although a peak retention point of 98% is achieved at Co 0.15.
ANALYSIS OF THE INFLUENCE OF TEMPERATURE, EQUIVALENCE RATIO (ER) AND GASIFYING AGENT AGAINST COLD GAS EFFICIENCY (CGE) AND TAR: SISTEMATIC LITERATURE REVIEW RAHMAH, DEWI ANISA; NURHILAL, OTONG
Jurnal Material dan Energi Indonesia Vol 15, No 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jme.v15i2.69127

Abstract

The global energy transition to renewable sources places biomass and gasification technologies as crucial solutions for producing syngas. The Systematic Literature Review (SLR) analyzed the influence of operational parameters, namely Temperature, Equivalent Ratio (ER) and Gasification Agent on Cold Gas Efficiency (CGE) and Tar in biomass gasification. Based on the PRISMA methodology and the analysis of 30 selected articles, it was found that temperature has a non-linear and critical relationship. CGE reaches a peak of 75% in the range of 750°C to 800°C, while tar reduction occurs above 800°C through a thermal cracking mechanism. The optimal ER value was identified at 0.37 which resulted in a maximum concentration of flammable gases of H2 and CO with minimal tar. In addition, gasification agents such as flue gas show better quality syngas than air. By design, the downdraft type reactor proved to be superior with a much lower tar concentration of 0.05-0.45 g/Nm3 compared to the updraft type of 10.9 g/Nm3. The SLR results underscore the importance of multivariable parameter optimization for efficient and reliable gasification performance.
Co-Authors Otong Nurhilal Sahrul Hidayat