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All Journal Communications in Science and Technology Journal of Renewable Energy and Mechanics Jurnal Sains Materi Indonesia Journal of Batteries for Renewable Energy and Electric Vehicles
Jarot Raharjo
Pusat Teknologi Material (PTM) - BPPT Gedung II BPPT Lantai 22, Jl. M.H. Thamrin 8, Jakarta 10340
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Techno-economic analysis for the production of LaNi5 particles Nandiyanto, Asep Bayu Dani; Maulana, Muhammad Irfansyah; Raharjo, Jarot; Sunarya, Yayan; Minghat, Asnul Dahar
Communications in Science and Technology Vol 5 No 2 (2020)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.5.2.2020.195

Abstract

LaNi5 is widely used in various applications. Many methods to produce LaNi5 particles have been reported but information for the large-scale production, so far, is less available. This study aimed to evaluate the project for the production of LaNi5 particles using combustion-reduction (CR) and co-precipitation-reduction (CPR) methods based on engineering and economic perspective. Engineering evaluation was conducted by evaluating the CR and CPR processes from stoichiometry. For the economic evaluation, several economic parameters were calculated in the ideal condition including gross profit margin (GPM), payback period (PBP), break-even point (BEP), cumulative net present value (CNPV), profitability index (PI), internal rate return (IRR), and return on investment (ROI). For the worst cases in the project, it was done by calculating both the internal problems (i.e., raw materials, sales, utility, labor, employee, fixed cost, variable cost, and production capacity) and the external issues (i.e., taxes and subsidiaries). The engineering analysis provided the information that CR and CPR projects are prospective for being able to be done using commercial apparatuses. The economic analysis from GPM, PBP, BEP, CNPV, and PI showed the positive results, while IRR and ROI showed the negative ones, indicating that the projects are acceptable for large-scale production, but it seems to be less attractive for industrial investors. The analysis also confirmed that the CR process was more prospective than the CPR process. This work has demonstrated the important of the projects for further developments.
The Influence of Anodizing Electrolyte Concentration on Ni-P Deposition on Anodic Aluminum Oxide (AAO) Rizkia, Vika; Susanto, Iwan; Belyamin; Garjati, Vina Nanda; Hapsari, Ade Utami; Raharjo, Jarot; Damisih; Pravitasari, Retna Deca
Jurnal Sains Materi Indonesia Vol. 27 No. 1 (2025): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2025.9708

Abstract

Aluminum alloys suffer from deficiencies in surface performance due to insufficient resistance to corrosion and mechanical qualities in harsh environments. Therefore, it is crucial to apply a protective surface modification during the manufacturing process of the aluminum component. The electroless deposited Ni-P shows great potential as a protective coating due to its simple manufacturing process and outstanding performance. This study investigates the effect of oxalic acid concentration in the anodizing process on electroless Ni-P coating. In this study, Anodic Aluminum Oxide (AAO) is formed by an anodizing process on 0.3,0.5, and 0.7 oxalic acids prior to Ni-P electroless deposition. The resulting Ni-P layer has a nodular-like morphology with a size in the order of 0.5 m or less. Moreover, the AAO surface is covered by a thin and tightly formed layer of nickel particles. The EDX analysis shows the oxygen percentage falls by up to 70% after Ni deposition in all anodizing parameters, as compared to the anodized specimens alone. In addition, the nickel content gradually decreases as the concentration of oxalic acid increases from 0.3 M to 0.7 M.
The Calcination Temperature Effect on Crystal Structure of LiNi1/3Mn1/3Co1/3O2 Cathode Material for Lithium-Ion Batteries Rahayu, Sri; Saudi, Aghni Ulma; Tasomara, Riesma; Gumelar, Muhammad Dikdik; Utami, Wahyu Tri; Hapsari, Ade Utami; Raharjo, Jarot; Rifai, Abdulloh; Khaerudini, Deni Shidqi; Husin, Saddam; Saputra, Dita Adi; Yuliani, Hanif; Andrameda, Yurian Ariandi; Taqwatomo, Galih; Arjasa, Oka Pradipta; Damisih, Damisih; Hardiansyah, Andri; Pravitasari, Retna Deca; Agustanhakri, Agustanhakri; Budiman, Abdul Hamid
Journal of Batteries for Renewable Energy and Electric Vehicles Vol. 1 No. 02 (2023): NOVEMBER 2023
Publisher : NBRI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59046/jbrev.v1i02.22

Abstract

The lithium-ion battery has gained popularity among other secondary batteries for portable electronic devices and electric vehicle applications, especially the LiNi1/3Co1/3Mn1/3O2 or NMC111, considering its well-balanced configuration resulting in stable and safe electrochemical performance. NMC111 has been successfully prepared using a coprecipitation process at calcination temperatures from 800 to 950°C. The physical characteristics were investigated using X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), and Particle Size Analysis (PSA). The XRD patterns showed the rhombohedral single phase for all calcination temperatures. Meanwhile, higher calcination temperatures offer higher degree of crystallinity, lower intensity ratio and more undesirable cation mixing. The particles with a uniform rectangle or pyramid shape are observed at the calcination temperature range from 800 to 900°C. However, bigger submicron particles with a rectangle or pyramid shape are detected at a higher temperature (950°C). The SEM-EDS mapping shows the homogeneity composition for all variation calcination temperatures. PSA analysis showed that calcination temperature at 800 and 850°C gives the particle less than 400 nm suggesting a potential material for a cathode of lithium-ion batteries.
PERANCANGAN MESIN PENGHANCUR DAUN KERING MENGGUNAKAN LIMA MATA PISAU Sutrisna, Arya; Kamaharudin, Syawaldi; Panuh, Dedikarni; Raharjo, Jarot
Journal of Renewable Energy and Mechanics Vol. 2 No. 02 (2019): REM
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/rem.2019.3532

Abstract

ABSTRAK Sebagai penelitian Tugas akhir dengan judul”Perancangan Mesin Penghancur Daun Kering Menggunakan Lima Mata Pisau”. Perancangan mesin ini bertujuan untuk mendapatkan suatu mesin penghancur daun-daunan kering. Untuk mendapatkan ukuran kehalusan daun dari proses pengolahan mesin penghancur daun-daunan kering. Untuk mendapatkan kapasitas produksi olahan dari mesin. Proses perancangan mesin penghancur daun kering dilakukan dengan tahapan yaitu perancangan dan penjelasan tugas/fungsi, perancangan konsep produk (gambar kerja). Analisis teknik meliputi analisis daya dan kecepatan yang terjadi pada poros. Tenaga penggerak mesin penghancur dedaunan kering direncanakan menggunakan motor listrik yang disesuaikan dengan kemampuan daya listrik untuk UKM yang diperkirakan rata-rata berkisar 900 sampai 1300 watt. Hasil dari perancangan mesin perancangan daun kering dengan kapasitas produksi 32 kg/jam, dan dimensi mesin panjang 60 cm x lebar 60 cm x tinggi 100 cm, mengunakan tenaga pengerak berupa motor listrik 1/2 HP 1400 rpm, rangka mengunakan siku profil L 40 x 40 x 4 mm. Hasil uji kinerja memperlihatkan bahwa mesin bekerja cukup baik, dan dapat menghasilkan kehalusan cacahan dedauan berukuran 5-10 mm. Kata kunci : Mesin penghancur daun, Daya, Putaran, Kapasitas Produksi ABSTRACT As a final project research with the title "Designing Dry Leaves Crushing Machine Using Five Blades". The design of this machine aims to obtain a dry leaf shredder. To get the size of the fineness of the leaves from the processing of the dried leaf crusher. To get the processed production capacity from the machine. The process of designing dry leaf shredder is done by stages, namely design and explanation of tasks / functions, design of product concepts (working drawings). Technical analysis includes analysis of power and speed that occurs on the shaft. The driving force of the dry foliage crusher is planned to use an electric motor that is adjusted to the ability of electric power for SMEs which is estimated to average around 900 to 1300 watts. The results of the design of dry leaf design machines with a production capacity of 32 kg / hour, and dimensions of the length of the machine 60 cm x width 60 cm x height 100 cm, using power in the form of 1/2 HP 1400 rpm electric motor, frame using L 40 x elbow profile 40 x 4 mm. The performance test results show that the machine works quite well, and can produce fineness of leaves measuring 5-10 mm. Keywords: leaf shredder, shaft power, speed, production capacity
Co-Authors Abdul Hamid Budiman Agustanhakri, Agustanhakri Andrameda, Yurian Ariandi Asep Bayu Dani Nandiyanto Belyamin Belyamin Damisih Damisih, Damisih Dedikarni Deni Shidqi Khaerudini Garjati, Vina Nanda Gumelar, Muhammad Dikdik Hapsari, Ade Utami Hardiansyah, Andri Husin, Saddam Iwan Susanto Kamaharudin, Syawaldi Maulana, Muhammad Irfansyah Minghat, Asnul Dahar Oka Pradipta Arjasa Pravitasari, Retna Deca Rifai, Abdulloh Saputra, Dita Adi Saudi, Aghni Ulma SRI RAHAYU sutrisna, arya Taqwatomo, Galih Tasomara, Riesma Vika Rizkia Wahyu Tri Utami Yayan Sunarya Yuliani, Hanif