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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics JURNAL KIMIA SAINS DAN APLIKASI Jurnal Sains Materi Indonesia Widyariset Indonesian Journal of Science and Technology Jurnal Ilmu Kesehatan Masyarakat (The Public Health Science Journal) Jurnal Ilmu Fisika Widyariset International Journal of Sustainable Transportation Technology Jurnal Pengabdian Perikanan Indonesia Journal of Technomaterial Physics Jurnal Inovasi Pembelajaran di Sekolah Jurnal Media Akuakultur Indonesia PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Journal of Materials Exploration and Findings Jurnal Material dan Energi Indonesia International Journal of Renewable Energy Development Jurnal Ilmu Kesehatan Masyarakat (The Public Health Science Journal)
Slamet Priyono
Badan Riset Dan Inovasi Nasional
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Transportation Other

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Synthesis, Characterization, and Electrochemical Performance of Reduced Graphene Oxide-Metal (Cu,Zn)-Oxide Materials Sugianto Sugianto; Ngurah Made Dharma Putra; Endah F. Rahayu; Wahyu B. Widayatno; Cherly Firdharini; Slamet Priyono; Didik Aryanto
Indonesian Journal of Science and Technology Vol 8, No 2 (2023): (ONLINE FIRST) IJOST: September 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v8i2.56065

Abstract

The reduced graphene oxide (rGO) and metal (Cu,Zn)-oxide composites were prepared using a one-step hydrothermal technique. The role of (Cu,Zn)-oxide on the physical and electrochemical properties of the composite was investigated. The composite consists of various shapes of ZnO nanoflowers and micro-spheres, as well as Cu-oxide nanoflakes and octahedron-like shapes. The (Cu,Zn)-oxides were formed in between the rGO layers and observed in the rGO-ZnO, rGO-CuO, and rGO-CuO-ZnO composites. The presence of ZnO, CuO, and rGO within the composite structure is also confirmed by the analyses of crystal structure, microstructure, and surface functional groups. Some excess impurities remaining from the surfactant give considerable differences in the electrochemical performance of the composites. The specific capacitance values of the rGO, rGO-ZnO, rGO-CuO, rGO-(0.5CuO-0.5ZnO), and rGO-(0.25CuO-0.75ZnO) composites are 9.32, 58.53, 54.14, 25.21, and 69.27 F/g, respectively. The formation ofa double metal-oxide structure as well as their insertion into the rGO sheet can significantly improve the electrochemical properties of the supercapacitor.
STUDI PENGARUH KETEBALAN LEMBAR KATHODA LiFePO4 PADA PERFORMA BATERAI SEKUNDER ION LITHIUM JOKO TRIWIBOWO, TITIK LESTARININGSIH SLAMET PRIYONO, R. IBROHIM PURAWIARDI, LENI DAULAY
Jurnal Material dan Energi Indonesia Vol 5, No 02 (2015)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.784 KB) | DOI: 10.24198/jmei.v5i02.11158

Abstract

Bahan elektroda yang digunakan dalam baterai ion lithium berbentuk lembaran komposit yang dilapiskan pada pengumpul arus. Komposit elektroda terdiri dari bahan aktif/elektroda, aditif bersifat konduktif elektronik dan matriks berbasis polimer. Performa baterai antara lain diindikasikan oleh kapasitas spesifik (mAh/g), densitas kapasitas (mAh/cm2), kemampuan tingkat/ rate capability dan tahanan dalam. Pada penelitian ini dibuat komposit bahan aktif katoda LiFePO4, aditif Acetylene Black dan matriks PVdF dengan perbandingan komposisi berat 85:10:5. Grafit dan 1 M LiPF6 dalam larutan EC dan DEC digunakan masing-masing sebagai anoda dan cairan elektrolit. Verifikasi fasa dari bahan katoda dan anoda dilakukan melalui analisis pola difraksi XRD. Morfologi lembaran elektroda dianalisis melalui SEM. Analisis performa baterai dari komposit dengan variasi ketebalan slurry (50, 100 dan 300 μm) menggunakan battery analyzer. Hasil analisis menunjukan semakin tebal lembar komposit semakin besar kapasitas spesifik (mAh/g) dan densitas kapasitas (mAh/cm2) namun rate capability menurun disebabkan tahanan dalam lembar yang meningkat.
Characteristics of Sodium Lithium Titanate Synthesized at Different Solid-State Reaction Temperature for Lithium-Ion Battery Anode Yahya, Ilham Nur Dimas; Sofyan, Nofrijon; Khaerudini, Deni Shidqi; Timuda, Gerald Ensang; Priyono, Slamet
Journal of Materials Exploration and Findings Vol. 2, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The effect of sintering temperature on the characteristics of sodium lithium titanate (NaLiTi3O7/NaLTO) synthesized at different solid-state reaction temperature and its performance as lithium-ion battery anode has been investigated. The precursors for the synthesis consisted of LiOH.H2O, TiO2, and NaHCO3. The synthesis was performed via solid-state reaction method. The precursors were mixed and sintered at variation temperatures of 900oC, 1000oC, and 1100oC for 2 hours under atmosphere condition. The final product was characterized using X-ray diffraction (XRD) and particle size analyzer (PSA). The XRD analysis showed the main phase of NaLTO with some impurities. PSA analysis showed that the sintering temperature has a significant effect on changes in particle size where the sample at a temperature of 1100oC has the largest particle size of 74.62 µm. The battery was fabricated by firstly mixing NaLTO powder with polyvinylidene fluoride (PVDF) and acetylene black (AB) in a ratio of 85:10:5 wt.% and the mix was then deposited onto copper foil to form NaLTO a sheet. The NaLTO sheet was cut into circular discs with a diameter of 14 mm and were arranged in a sequence of separator, metallic lithium, and electrolyte to form a coin cell in a glove box. Characterization using cyclic voltammetry (CV) and charge-discharge (CD) showed that the NaLTO sintered at 1000oC provided good electrochemical performance with the largest diffusion coefficient of 3.948 x 10-10 m2/s, Coulombic efficiency reached 100%, and a high specific capacity of 65.83 mAh/g.
Potensi Implementasi Science, Technology, Engineering, Art And Mathematic (Steam) pada Pembelajaran IPA Materi Perubahan Iklim Ditinjau dari Prespektif Guru IPA Se Kabupaten Demak Priyono, Slamet; Nugroho, Ary Susatyo; Roshayanti, Fenny
Jurnal Inovasi Pembelajaran di Sekolah Vol 5 No 1 (2024): Jurnal Inovasi Pembelajaran di Sekolah
Publisher : PGRI Kota Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51874/jips.v5i1.193

Abstract

This article aims to determine the profile of junior high school science teachers in the potential for implementing the STEAM learning approach to the concept of climate change to improve the creative thinking skills of junior high school students in Demak Regency. STEAM learning is a learning approach that emphasizes the relationship between knowledge and skills in science, technology, engineering, art and mathematics. This research is a type of qualitative descriptive research involving 19 junior high school science teachers in Demak Regency. The instrument is a questionnaire given online via Google Form. The research results showed that 52.6% of teachers knew the STEAM learning approach and 47.4% did not know. As many as 26.3% of teachers already understand learning with STEAM projects and only 57.1% have implemented it, while 42.9% have not implemented it. The results showed that 48% had great fun and 52% enjoyed learning with the STEAM approach and 42.1% of students became very active, 57.9% of students became active.
Comparison of lithium sources on the electrochemical performance of LiNi0.5Mn1.5O4 cathode materials for lithium-ion batteries Sudaryanto, Sudaryanto; Salsabila, Nadhifah; Sari, Puspita Ayu Kusuma; Fachrudin, Adinandra Caesar; Salsabila, Adinda Atalya; Nursanto, Eduardus Budi; Priyono, Slamet; Jodi, Heri; Gumelar, Muhammad Dikdik
International Journal of Renewable Energy Development Vol 13, No 3 (2024): May 2024
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2024.59662

Abstract

In order to fulfill the demand for high energy and capacity, an electrode with high-voltage capability, namely LiNi0.5Mn1.5O4 (LNMO) that has an operating potential of up to 4.7 V vs Li/Li+, is currently becoming popular in Li-ion battery chemistries. This research produced LNMO by using a solid-state method with only one-step synthesis route to compare its electrochemical performance with different lithium sources, including hydroxide (LNMO-LiOH), acetate (LNMO-LiAce), and carbonate (LNMO-LiCar) precursors. TGA/DSC was first performed for all three sample precursors to ensure the optimal calcination temperature, while XRD and SEM characterized the physical properties. The electrochemical measurements, including cyclic voltammetry and charge-discharge, were conducted in the half-cell configurations of LNMO//Li-metal using a standard 1 M LiPF6 electrolyte. LNMO-LiOH samples exhibited the highest purity and the smallest particle size, with values of 93.3% and 418 nm, respectively. In contrast, samples with higher impurities, such as LNMO-LiCar, mainly in the form of LixNi1-xO (LiNiO), displayed the largest particle size. The highest working voltage possessed by LNMO-LiOH samples was 4.735 V vs Li/Li+. The results showed that LNMO samples with LiNiO impurities would affect the reaction behavior that occurs at the cathode-electrolyte interface during the release of lithium-ions, resulting in high resistance at the battery operations and decreasing the specific capacity of the LNMO during discharging. The highest value, shown by LNMO-LiOH, was up to 92.75 mAh/g. On the other side, LNMO-LiCar only possessed a specific capacity of 44.57 mAh/g, indicating a significant impact of different lithium sources in the overall performances of LNMO cathode.
Synthesis of Lithium Mangan Oxide (LiMn2O4) Using Solution Method for Lithium Ion Battery Catodes Materials Priyono, Slamet
Journal of Technomaterial Physics Vol. 2 No. 1 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i1.5264

Abstract

Synthesis of Lithium Manganese Oxide (LiMn2O4) for Lithium Ion Battery Cathodes with Solution Method has been conducted. This experiment was carried out using the solution method. In this study, the synthesis was carried out by varying the calcination temperature. The raw materials used were Lithium Acetate (C2H3O2Li), Manganese Acetate (C4H6MnO4.4H2O), Hydrochloric Acid (HCl), and Ethanol (C2H5OH) as solvents which were dissolved to become LiMn2O4 precursors. Synthesis was carried out at calcination temperatures of 600oC, 700oC and 800oC, for 4 hours then pounded with a mortar until smooth. The characterization includes: The results of the STA test at 280oC-380oC showed a mass decrease of 11.9973% due to the release of mass of water vapor and decomposition of C4H6MnO4.4H2O raw material. XRD analysis shows that the increase in peak temperature of the LiMn2O4 phase intensity is getting sharper, the peak showing the impurity Li2O phase decreases. SEM analysis results show that the higher the calcination temperature, the larger the particle size is formed, because in the calcination process the densification process occurs.
Effect of Solid Content in Electrochemical Performance of Graphite Anode of Lithium-ion Batteries Butarbutar, Leyoni Metanencya; Priyono, Slamet
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.v4i1.7731

Abstract

Rechargeable batteries have been implemented in most portable electronic devices. Lithium-ion battery (LIB), as the main power source, dominates the mobile device market due to its high energy density, long shelf life, and environmentally friendly operation. In the rechargeable lithium-ion battery, there are four main components, one of which is the anode. The anode material used is commercial graphite. Thus, this study aims to determine the effect of solid content solvents on battery performance. The main discussion in this study is to analyze the effect of solvent variations of N, N Dimethyl Acetamide (DMAC) on the characteristics of the sheet and the difference in solid content of graphite anode sheets on battery performance. Identification of the formed phase was carried out by XRD, reduction and oxidation reactions by cyclic voltammetry test, battery capacity by charge/discharge test, and study of the electrochemical characteristics of the electrode material by electrochemical impedance spectroscopy test. The best anode sheet is produced by mixing 2.5 mL DMAC solvent at a thickness of 0.07 mm with a solid content of 25%. The results of the charge-discharge test showed a specific capacity of 309.33 mAh/g in the first cycle.
Hubungan Komunikasi Terapeutik Perawat dengan Kepuasan Pasien Rawat Inap di Rumah Sakit Cica Daryanti; Slamet Priyono
Jurnal Ilmu Kesehatan Masyarakat Vol 5 No 4 (2016): Jurnal Ilmu Kesehatan Masyarakat
Publisher : UIMA Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33221/jikm.v5i4.306

Abstract

Komunikasi terapeutik yang baik akan menciptakan hubungan saling percaya antara perawat dan pasien. Dengan demikian, pasien akan merasa puas dan nyaman terhadap pelayanan yang diberikan perawat sehingga meningkatkan semangat dan motivasi pasien untuk sembuh. Tujuan penelitian ini adalah untuk mengetahui hubungan komunikasi terapeutik perawat dengan kepuasan pasien rawat inap di Rumah Sakit Grha Permata Ibu Depok tahun 2016. Jenis penelitian kuantitatif dengan desain penelitian Cross Sectional. Populasi dalam penelitian ini adalah seluruh pasien rawat inap di Rumah Sakit Grha Permata Ibu Depok. Pengambilan sampel dengan menggunakan accidental sampling, maka didapatkan jumlah sampel dalam penelitian ini sebanyak 40 responden. Instrument penelitian menggunakan kuesioner dan pengolahan data menggunakan program. Hasil penelitian diperoleh dari 40 responden sebanyak 24 responden merasa puas dengan pelayanan rawai inap dan sebanyak 23 responden menilai komunikasi terapeutik perawat baik. Uji hipotesis chi square antara komunikasi terapeutik perawat terhadap kepuasan pasien rawat inap di Rumah Sakit Grha Permata Ibu Depok diperoleh p-value sebesar 0,016 dan nilai Odds Ratio (OR) sebesar 6,600. Kesimpulan penelitian ini ada hubungan komunikasi terapeutik perawat terhadap kepuasan pasien rawat inap di Rumah Sakit Grha Permata Ibu Depok tahun 2016. Diharapkan manajemen atau Diklat Rumah Sakit Grha Permata Ibu Depok untuk mendukung serta memfasilitasi perawat dalam meningkatkan komunikasi terapeutiknya, dengan mengirimkan perawatnya dalam pelatihan, workshop, bimbingan teknis khusus maupun seminar mengenai komunikasi terapeutik yang baik.
TINGKAT PENERIMAAN MASYARAKAT TERHADAP PENERAPAN SISTEM CBIB (CARA BUDIDAYA IKAN YANG BAIK) PADA BUDIDAYA PEMBESARAN IKAN LELE KOLAM TERPAL DI KECAMATAN SLAWI DAN KECAMATAN LEBAKSIU KABUPATEN TEGAL Slamet Priyono
Jurnal Pengabdian Perikanan Indonesia Vol 1 No 2 (2021): Jurnal Pengabdian Perikanan Indonesia
Publisher : Program Studi Budidaya Perairan Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppi.v1i2.115

Abstract

ABSTRAK Meningkatnya kesadaran masyarakat akan kesehatan dan keamanan pangan menuntut seluruh pihak yang terkait perikanan budidaya di Indonesia untuk mengutamakan kualitas, baik itu untuk produk ekspor maupun konsumsi masyarakat lokal. Berkaitan dengan hal tersebut pemerintah mencanangkan untuk menerapkan CBIB sebagai standart minimal bagi para pembudidaya. Cara Budidaya Ikan yang Baik (CBIB) adalah penerapan cara memelihara atau membesarkan hingga proses pemanenan dalam lingkungan yang terkontrol sehingga memberikan jaminan keamanan pangan (foodsafety) biota budidaya.Penyusunan karya ilmiah ini bertujuan untuk mengetahui tingkat penerimaan masyarakat dalam menerapkan sistem CBIB pada sistem budidaya lele kolam terpal di Kecamatan Slawi dan Kecamatan Lebaksiu Kabupaten Tegal.Hasil karya ilmiah ini diharapkan dapat menjadi evaluasi bagi Penyuluh untuk terus meningkatkan pemahaman dan kesadaran pembudidaya akan pentingnya penerapan CBIB dalam sistem budidayanya. Metode yang digunakan dalam karya ilmiah ini adalah metode survey dengan pengamatan langsung, wawancara serta pengambilan data menggunakan kuisioner terhadap pembudidaya ikan lele kolam terpal di Kecamatan Slawi dan Kecamatan Lebaksiu Kabupaten Tegal.
Structural Evolution and Ionic Conductivity of Al2O3-Doped LLZO via Single Heat Treatment Yuniarti, Endah; Priyono, Slamet; Sindhu Hendradjaja, Simon; Setiawan, Jan; Prijono, Kusdi; Femlee R, Brity
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.157-170.2025

Abstract

This study investigates the synthesis via solid state reaction and characterization of Li₇La₃Zr₂O₁₂ (LLZO) as a solid electrolyte doped with Al₂O₃ using a one-step heat treatment (sintering at 900°C for 4 hours). Samples were prepared with doping variations; pure LLZO (0Al-LLZO), 0.25Al-LLZO, and 0.5Al-LLZO, based on the formula  with x = 0, 0.25, and 0.5, and were mixed using ball milling for 4 hours at 25 Hz. XRD and Rietveld refinement confirmed the formation of a dominant tetragonal Li₇La₃Zr₂O₁₂ phase alongside minor secondary phases. Grain sizes ranged from 1.2 to 1.3 µm, and densification improved with increasing Al content. The 0.25Al-LLZO sample exhibited the highest ionic conductivity of 2.83 × 10⁻⁹ S/cm at room temperature, representing a 2.96-fold increase over undoped LLZO. These results indicate that Al doping significantly enhances structural stability and Li-ion transport in LLZO electrolytes processed at moderate temperatures.
Co-Authors Achmad Subhan Achmad Subhan Achmad Subhan Ahmad Sohib Ary Susatyo Nugroho Bambang Prihandoko Bambang Prihandoko Bambang Prihandoko Butarbutar, Leyoni Metanencya Cherly Firdharini Christin Rina Ratri Cica Daryanti Daniswara, Lufthansyah Deni Shidqi Khaerudini Didik Aryanto Edi Sanjaya Eduardus Budi Nursanto Endah F. Rahayu Endah Yuniarti, Endah Fachrudin, Adinandra Caesar Femlee R, Brity Fenny Roshayanti Gerald Ensang Timuda Gumelar, Muhammad Dikdik Heri Jodi, Heri Hudaya, Chairul Ilham Nur Dimas Yahya Ilma Nuroniah Ilma Nuroniah Imam Santoso Imam Santoso Jan Setiawan Kerista Sebayang Khoiri, Rahma Kusdi Prijono Lediliocza Lediliocza Mia Aulia Dhika Ngurah Made Dharma Putra Nofrijon Sofyan, Nofrijon Qolby Sabrina Salsabila, Adinda Atalya Salsabila, Nadhifah Saptari, Sitti Ahmiatri Sari, Puspita Ayu Kusuma Sembiring, Rinawati Sherly Novia Sari Simon Sindhu Hendradjaja Sugianto - Titik Lestariningsih Wahyu B. Widayatno Wahyu Bambang Widayatno Yayuk Astuti Yusuf Wijanarko Yusuf Wijanarko