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All Journal International Journal of Applied Power Engineering (IJAPE) Bulletin of Electrical Engineering and Informatics Elkawnie Science and Technology Indonesia Journal of Applied Geospatial Information Jurnal Penelitian Sains Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Indonesian Journal of Chemistry Eksakta : Berkala Ilmiah Bidang MIPA Hydrogen: Jurnal Kependidikan Kimia Journal of Technomaterial Physics International Journal of Social Service and Research Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) International Journal of Research in Vocational Studies (IJRVOCAS) PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Jurnal Rekayasa Energi Kesatria : Jurnal Penerapan Sistem Informasi (Komputer dan Manajemen)
Syahrul Humaidi, Syahrul
Department Of Physics, Faculty Of Mathematics And Natural Sciences – Universitas Sumatera Utara, Jl. Dr. T. Mansur No.9, Padang Bulan, Kec. Medan Baru, Kota Medan, Sumatera Utara
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XRD Analysis of Li4Ti5O12 with Post Heat Treatment for Lithium-ion Capacitor (LIC) Applications Humaidi, Syahrul
Journal of Technomaterial Physics Vol. 4 No. 1 (2022): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v4i1.8154

Abstract

Characterization of XRD-analysis on Li4Ti5O12 with post heat treatment for applications Lithium-ion Capacitor (LIC) has been conducted. The powder method was used in the analysis, whereas the samples were prepared using the sol-gel method. The anode material Li4Ti5O12 precursor was sintered at 850°C for 4 hours and followed by heat-treatment at 600oC for 3 hours. Characterization of structural (XRD analysis) was applied to determine the formation of Li4Ti5O12 phase. The results of the characterization were formed Lithium titanate (Li4Ti5O12) and rutile phase (TiO2) with crystallite size on LTO I of 82.52 nm and LTO II of 92.07 nm. Overall, post heat treatment of anode Li4Ti5O12 succeeded in improving the quality and electrochemical performance for Lithium-ion Capacitor (LIC) application.
Manufacture of Solid Polymer Electrolyte (SPE) Based on PVDF HFP-LiBOB Humaidi, Syahrul; Aldira, Syarah; Lestariningsih, Titik
Journal of Technomaterial Physics Vol. 4 No. 2 (2022): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v4i2.8250

Abstract

This research aimed to synthesize solid polymer electrolyte (SPE) with and without Polyethylene oxide (PEO) using the solution cast technique. The liquid electrolyte of LiBOB was synthesized with the immersing method. The chemicals used are PVDF-HFP (0.75 g), TiO2(0.05 g), PEO(0.25 g), DMAC, EC, EMC, and LiBOB(1.55 g). The morphology of the surface membrane was characterized using SEM. The results of the SEM analysis shows that the addition of PEO plays a role in forming the SPE membrane because the addition of PEO greatly affects the density of the SPE sheet.
Characterization of CuCrO2 Material Produced Using Sol-Gel Method Delviya Amisha; Humaidi, Syahrul; Imaddudin, Agung
Journal of Technomaterial Physics Vol. 5 No. 1 (2023): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v5i1.9910

Abstract

This study aimed to analyze CuCrO2 material produced using the sol-gel method. The characterization used is X-ray Diffraction (XRD) and Scanning Electron Micoscope-Energy Dispersive Spectroscopy (SEM-EDS). The sample was made by weighing the raw material and measuring the solution with a measuring cup according to stoichiometric calculations, then dissolving it, burning it, grinding it, calcining it, sintering it, forming it into pellets, and re-sintering it. The XRD results show that the main phase of the sample is CuCrO2 and impurities (CuCr2O4). From the SEM results, the average particle size is 155.948µm.
Manufacture of Lithium Lanthanum Titanate Active Material as a Lithium-Ion Capacitor Anode Using Solid-State Reaction Methods Liza, Erliza Pratiwi; Humaidi, Syahrul; Rifai, Abdulloh
Journal of Technomaterial Physics Vol. 5 No. 1 (2023): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v5i1.9919

Abstract

Lithium lanthanum titanate, Li0.2La0.6TiO3 (LLTO) was synthesized for the manufacture of lithium-ion capacitors using the solid-state reaction method. in this study, the active ingredients were synthesized using variations of lithium and lanthanum as raw materials. The raw materials used are Li2CO3, La2O3, and TiO2. The three raw materials were mixed according to the stoichiometric calculations then added 13 ml of Ethanol solution so that the raw materials were mixed evenly during the milling process for 5 hours. Sintering was carried out for 8 hours at 800oC and then at 1150oC for 12 hours. The sintered powder was ground using a mortar and pastel and then sieved on a 400 mesh sieve. The anode sheet was made by mixing the active ingredients: PVDF: Super-P with a composition of 85:10:5 by adding 3 ml of DMAC solvents. The characterization test was carried out using XRD while the electrochemical test used CV and EIS. The XRD result shows the formation of the main phase and the impurity phase with the main phase percent of 96.4%. From the results of electrochemical testing, the percentage of capacity is 73%.
Synthesis and Characterization of Cu-Cr-O Phase with H2SO4 Solvent Using Sol-Gel Method Rangkuti, Yusridah; Humaidi, Syahrul; Maulid, Nurul; Imaduddin, Agung; Herbirowo, Satrio; Nugraha, Heri; Darsono, Nono
Journal of Technomaterial Physics Vol. 5 No. 1 (2023): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v5i1.10897

Abstract

This study used the cast-in-situ method to make concrete based on rice husk ash and pineapple leaf fiber. Rice husk ash and pineapple leaf fiber were used as the cement substitutes with different variations: 0%, 2.5%, 5%, and 7.5%. Parameters examined in this study included density, porosity, water absorption, flexural strength, and compressive strength using a universal testing machine and Material Testing equipment, which were then analyzed morphologically using SEM-EDX. The result showed a density of  2.510 × 103 − 2.451 × 103 kg/m3, porosity of 7.64 – 5.73 %, water absorption of 0.296 % – 0.243 %, compressive strength of 23.66 – 16.45 MPa, flexural Strength of 33.3 – 25.3 MPa. The morphological analysis showed that the rice husk ash and pineapple leaf fiber addition was responsible for the concrete's porous structure in this study has a porous structure. The EDX analysis result exhibited a high carbon percentage.
Electrochemical Performance of Na2Mn3O7 as a Cathode Material in Sodium-Ion Batteries Using the Precipitation Method with Ethylene Glycol Chelating Agent Subhan, Achmad; Sulaiman, Muhammad Thariq As; Humaidi, Syahrul
Journal of Technomaterial Physics Vol. 6 No. 1 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i1.13867

Abstract

Tests were conducted on Na2Mn3O7 as a cathode material in sodium-ion batteries, aiming to synthesize Na2Mn3O7 precursor using commercial and synthetic MnCO3 variants. Sample A utilized commercial MnCO3, while sample B utilized MnCO3 synthesized from MnSO4.1H2O and Na2CO3. Both variants were mixed with Na2CO3 to form Na2Mn3O7 precursor, which was then sintered at 700°C for 4 hours, ground, and sieved. A slurry was prepared by mixing the active materials PVDF: Super P in an 8:1:1 ratio with 3.5 mL of NMP. Sample A exhibited a conductivity of 3.4706×10-7 S/cm, and sample B had a conductivity of 2.7304×10-7 S/cm in the EIS results. In the CV test, sample A showed oxidation and reduction peaks at 2.77 V and 1.62 V, respectively, while sample B had peaks at 2.842 V and1.716 V. In the CD test, sample A reached maximum and minimum peaks of 4.3 V and 1.4 V, while sample B reached peaks of 4.2 V and 1.3 V. Sample A exhibited a capacity of 117.02 mAh/g on charge and 93.47 mAh/g on discharge, whereas sample B showed capacities of 79.17 mAh/g on charge and 65.79 mAh/g on discharge. These results indicate the superior performance of sample A over sample B.
Distance Measurement of Low Reflectance Objects Using Indirect Time of Flight LiDAR Agitta Rianaris; Nofriha Rahmayani Siregar; Hari Pratomo; Surip Kartolo; Syahrul Humaidi; Dwi Hanto
Journal of Technomaterial Physics Vol. 6 No. 2 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i2.16988

Abstract

Remote sensing is a system that enables data collection without physical contact with the object or its environment. Light detection and Ranging (LiDAR) technology is increasingly important in various industries, particularly developing autonomous vehicles. In autonomous vehicle applications, LiDAR is expected to detect multiple objects from high and low reflectance to make it easy to recognize its surrounding area. We have designed a biaxial LiDAR range finder system based on indirect time of flight technology, which has been tested to measure the distance of an object with high reflectance. In this work, we employ the system to measure the distance of an object with low reflectance from High Impact PolySterene (HIPS). The results show that the systems can measure objects from HIPS up to 33 m, which is lower than when the system measures an object with high reflectance.
Fe2O3 Review: Nanostructure, Synthesis Methods, and Applications Novita, Novita; Ramlan, Ramlan; Naibaho, Marzuki; Ginting, Masno; Humaidi, Syahrul; Duma, Tulus Na
International Journal of Social Service and Research Vol. 4 No. 02 (2024): International Journal of Social Service and Research (IJSSR)
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/ijssr.v4i02.728

Abstract

Iron sand, which contains magnetite iron ore, exhibits unique magnetic properties when exposed to magnetic fields. Iron ore content, including ?-Fe2O3, FeTiO3, Magnetite (Fe3O4), and others, provides potential uses in various industries such as electronics, energy, chemical, ferrofluids, catalysts, and biomedicine. The location of the discovery of iron sand can affect its mineral characteristics and geological conditions. This research aims to develop innovative synthesis methods to produce hematite nanomaterials from iron sand. Nano-size hematite nanoparticles exhibit unique characteristics, including an increase in specific surface area that is beneficial in applications such as gas sensors, catalysts, lithium-ion batteries, and the manufacture of permanent magnets. Through a literature review, this article presents comprehensive insights into the characteristics of iron sand, variations in synthesis methods, and the structure of hematite nanoparticles. Applications of hematite nanoparticles in water treatment, catalysis, and energy storage are also detailed. This article is expected to contribute to the development of innovative nanomaterial technologies as well as explore the potential of iron sand resources for wider industrial applications.
PREPARASI DAN MODIFIKASI SIFAT ADHESI PERMUKAAN METAL FOAM UNTUK MENINGKATKAN KARAKTERISTIK ADHESI Humaidi, Syahrul; Suharlan, Didy
JURNAL REKAYASA ENERGI Vol. 3 No. 1 (2024): Jurnal Rekayasa Energi
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jre.v3i1.49

Abstract

Permukaan metal foam telah berhasil dimodifikasi sehingga mendapatkan permukaan dengan sifat adhesi yang tinggi dengan sudut kontak sebesar 112° pada hari pertama pengamatan. Modifikasi permukaan metal foam dilakukan melalui prosedur pembersihan dan teknik penyemprotan sederhana menggunakan Super Nano hydrophobic Liquid Repellent. Tujuan utama dari penelitian ini adalah untuk mengeksplorasi pengaruh lapisan hidrofobik pada permukaan metal foam terhadap karakteristik kapilaritas yang dimiliki. Metal foam yang dilapisi dengan lapisan hidrofobik menyerap 0,03 gr air dalam 10 detik pertama, kondisi ini berlanjut untuk 50 detik berikutnya dan setelah 90 detik, pemompaan kapiler mencapai titik saturasi di mana jumlah air yang telah mengisi celah kapiler tidak dapat bergerak lagi karena jumlahnya telah mencapai maksimum. Dari penelitian ini juga diproleh kesimpulan bahwa semakin kecil sudut kontak metal foam, maka semakin meningkatkan tekanan kapilernya.
Characterization of Barium Hexaferrite and Iron Sand as Microwave Absorbing Materials Naibaho, Yeni P.S; Humaidi, Syahrul; Rianna, Martha; Diana, Linda
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 2 (2024): April-May 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i2.11776

Abstract

This research aims to analyze the characteristics of Barium Hexaferite and iron sand as microwave absorbing materials, their influence on microwave absorption properties, and the frequency range of waves produced by these materials. The research method used is the Co-Precipitation method. Dissolve barium hexapherite and iron sand in distilled water with the appropriate mass ratio. The results of this study show that the synthesis of iron sand and barium hexapherite material produces a single phase material. The single phase material is shown through X-ray diffraction pattern data, namely iron sand and barium hexapherite, namely hematite and barium hexapherite. Iron sand and barium hexapherite materials are characterized using EDS which shows a composition that is close to stoichiometry. Observations using VNA show that iron sand and barium hexapherite materials are able to absorb electromagnetic waves at a radar wave frequency of 11.1 GHz, which is -25.64 dB.
Co-Authors Abdulmajid, Muhammad W. Achmad Subhan Achmad Subhan Aditia Warman Agitta Rianaris Agung Imaduddin, Agung Aldira, Syarah Alfonsius Chrisandy Pratama Siregar Aliakbar, Muhammad Alya Nazwariva Andrean Simanjuntak Andrean V. H Simanjuntak Andrean V.H Simanjuntak Armelia Yuniani Averroes Fazlur Rahman Piliang Bonardo, Doli Dadan Ramdan Delviya Amisha Diana Alemin Barus Diana, Linda Diana, Linda E. Dinda Amilia Duma, Tulus Na Dwi Hanto Endah P. Sari Endah P. Sari Endah P. Sari Endah Paramita Erna Frida Ervina Putri Wulandari Estananto Fathi Marzuqi Fynnisa Zebua G. Gunawan Hari Pratomo Helena Artasari Sihombing Hendro Nugroho Heri Nugraha Herri Trisna Frianto, Herri Trisna Hibatullah, Khindi Aufa Humam Maulana Imaddudin, Agung Jihan Murtadha Rambe Kerista Sebayang Lestari Irene Purba Liza, Erliza Pratiwi Manurung, Ellya Veronika Iriani Manurung, Royston Mardiningsi Mardiningsi Marhaposan Situmorang Marhaposan Situmorang Marhaposan Situmorang Marhaposan Situmorang Marhaposan Situmorang, Marhaposan Martha Riana Martha Riana Martha Rianna Marzuki Sinambela Marzuki Sinambela Marzuki Sinambela Masherlina Masno Ginting Maulid, Nurul Mega Sirait Miftahul Fiqri Moraidah Hasanah Muhammad Abduh Akram Agus Muhammad Ali Akbar, Muhammad Ali Muhammad Wildan Abdulmajid Muhammadin Hamid Muliyati Muliyati Naibaho, Marzuki Naibaho, Yeni P. S. Naibaho, Yeni P.S Nazwa Armi Nofriha Rahmayani Siregar Nono Darsono, Nono Noor Haida Mohd Kaus Nurdin Bukit Nursal Nurul Maulida R Nasution Patra Mesiari Tarigan Perdinan Sinuhaji Perdinan Sinuhaji Perdinand Sinuhaji Rahmadsyah Rahmadsyah Ramlan, H. Rangkuti, Yusridah Resa Idha Resa Idha Resa Idha Rifai, Abdulloh Rizki Fadhillah Pratama Putra Romeo Kondouw Russell Ong Saharman Gea Sally Irvina Ritonga Santoso, Bayu Santy Meilisa Manurung Saragih, Dearninta A. P. Saragih, Immanuel Jhonson A. Sarah Mutiara Sembiring Satrio Herbirowo, Satrio Shiamny Nur Khair Tarigan Sihotang, Bertalina Simanjuntak, Andrean V. H. simanjuntak, benrad edwin Simanjuntak, Renaldo Siregar, Shinta Marito Suharlan, Didy Sulaiman, Muhammad Thariq As Surip Kartolo Susilawati Susilawati Susilawati Tarigan, Kerista Theresia Grefyolin Simbolon Timbangen Sembiring Titik Lestariningsih, Titik Tua Raja Simbolon Tulus Ikhsan Nasution Umar Muksin Umar Muksin Utami Ahda Surya Waslina Rangkuti Widya Nazri Afrida Yahya Darmawan Yahya Darmawan Yahya Darmawan Yahya Darmawan Yahya Darmawan Yahya Darmawan Yahya Darmawan Yahya Darmawan Yulianta Siregar Yusran Asnawi Zahedi Zahedi Zahwan Asrof Zahirul Ubaid Zikri Noer Zuriah Sitorus