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All Journal Wikrama Parahita : Jurnal Pengabdian Masyarakat ASEAN Journal of Chemical Engineering JMES The International Journal of Mechanical Engineering and Sciences
Sylvia Ayu Pradanawati
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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The Effect of Rice Husk as Additive in Injection Molding Process Dinny Harnany; I Made Londen Batan; Arif Wahjudi; Sylvia Ayu Pradanawati
The International Journal of Mechanical Engineering and Sciences Vol 6, No 2 (2022)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25807471.v6i2.14182

Abstract

This study investigated the moldability and the mechanical properties of bio-composite with rice husk as natural reinforcement. Natural materials that are abundant in nature can be used as reinforcement for polymer materials. Natural materials as reinforcement in plastic materials were used to obtain alternative materials in an injection molding process. With rice husk, polypropylene, and MAPP, four compositions of bio-composite materials were made and used as raw material injection molding process. The moldability from this material was observed through visualization of the product. The mechanical properties of the materials were observed by the tensile strength and impact test on the injection molding product. The result showed that these materials could be injected to form ASTM D638-03 Type V tensile test and ASTM D256-04 impact test specimens. Visually, the more rice husk on the bio-composite material, the darker the product color. The differences in tensile strength values decreased along with increased rice husk content. All bio-composite materials had roughly the same tensile strength value and were lower than polypropylene, except RH-5%. The impact value of bio-composites was lower than polypropylene impact value and tended to decline along with the increase in the rice husk content. Scanning electron microscope (SEM) analyzes were done on the fracture side of the impact specimen. Microscale voids decreased and were rarely found by adding rice husk to the material bio-composite. On the other hand, rice husk breakage and pullout phenomenon on bio-composite material were found.
Pelatihan Pembuatan Dye Sensitized Solar Cell (DSSC) Sederhana untuk Siswa SMP 161 Jakarta Agung Nugroho; Sylvia Ayu Pradanawati; Yose Fachmi Buys; Ayu Dahliyanti; Dita Floresyona; Yudi Rahmawan; Tirta Rona Mayangsari; Paramita Jaya Ratri; Gede W.P. Adhyaksa
Wikrama Parahita : Jurnal Pengabdian Masyarakat Vol. 7 No. 1 (2023): Mei 2023
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/jpmwp.v7i1.5445

Abstract

Perkembangan teknologi bersih menjadi isu yang saat ini sedang digencarkan pemerintah dalam upaya 100% elektrifikasi di Indonesia. Solar Panel merupakan salah alat yang paling populer dalam era teknologi baru terbarukan. Pengenalan solar panel di siswa bangku sekolah dapat mening¬kat¬kan pengetahuan dan pengalaman siswa dalam mengaplikas¬ikan energi baru terbarukan. Kurikulum Merdeka Belajar mendukung pengaplikasian teori secara hands on kepada siswa. SMP 161 dipilih karena merupakan sekolah adiwiyata yang menjadi mercusuar sekolah lain di Jakarta dalam hal lingkungan hidup. Dalam pelatihan ini, sel surya murah berbasis Dye Sensitized Solar Cell (DSSC) dibuat sendiri oleh siswa dan dipandu oleh tim dosen Universitas Pertamina. Menjelang akhir kegiatan, 100% siswa berhasil membuat DSSC dengan variasi dye dari jus blackberry dan buah naga merah. Dengan melakukan praktik langsung, siswa dapat memperoleh pengalaman dan pengetahuan baru mengenai DSSC.
A Comparative Study on The Electrochemical Properties of Hydrothermal and Solid-State Methods in The NCM Synthesis for Lithium Ion Battery Application Sylvia Ayu Pradanawati; Eduardus Budi Nursanto; Afif Thufail; Ahmad Zaky Raihan; Sugianto Sugianto; Haryo Satriya Oktaviano; Hanida Nilasary; Achmad Subhan; Agung Nugroho
ASEAN Journal of Chemical Engineering Vol 22, No 2 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.74209

Abstract

In this article, we report and compare the synthesis method of the active cathode materials based on nickel‐cobalt‐manganese (NCM) for lithium-ion battery application. We evaluate the hydrothermal and solid-state reaction method in NCM-622 synthesis, the material characterizations, and the battery performance. Based on the analytical results using X-ray diffraction (XRD), particles synthesized using hydrothermal and solid-state methods exhibit a highly crystalline NCM phase. NCM particles synthesized using solid-state reaction exhibit high-rate performance up to 10 C. The electrochemical impedance spectroscopy analysis shows that the charge transfer resistance (Rct) of NCM synthesized by the solid-state reaction (SSR) method was 25.9% lower than hydrothermal. Meanwhile, the ionic diffusivity of the SSR sample was 38.5% higher than the hydrothermal sample. These two factors lead to better performance when tested in a lithium-ion battery.
"Water-In-Salt" Electrolyte For High Temperature Aluminum Ion Battery Application Sylvia Ayu Pradanawati; Dinny Harnany; Faizal Fatah; Nur Layli Amanah
JMES The International Journal of Mechanical Engineering and Sciences Vol 7, No 2 (2023)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25807471.v7i2.18477

Abstract

This study focuses on examining aluminum chloride hexahydrate (AlCl3·6H2O) as an electrolyte salt in an Aluminum Ion Battery. The goal is to assess the effectiveness of AlCl3·6H2O as an electrolyte in an Aluminum Ion Battery, evaluate the battery's performance, and examine the anode and cathode properties of an Aluminum Ion Battery. Laboratory tests and literature analysis are the approaches used. Following cyclic voltammetry testing, it was shown that the water-in-salt electrolyte AlCl3 performed better than the 1M AlCl3 electrolyte. Compared to the 1M AlCl3 electrolyte, the hydrogen evolution reaction in the water-in-salt electrolyte AlCl3 has a smaller potential range. The cyclic voltammetry graph of an aluminum ion battery containing a water-in-salt AlCl3 electrolyte is noticeably smaller than that of an aluminum ion battery with a 1M AlCl3 electrolyte. It has been observed that the water-in-salt AlCl3 electrolyte requires more activation energy compared to the 1M AlCl3 electrolyte. Based on SEM-EDS data, using water-in-salt electrolyte AlCl3 for aluminum ion batteries is better as it does not cause significant defects in the anode and cathode.
Co-Authors Achmad Subhan Afif Thufail Agung Nugroho Ahmad Zaky Raihan Arif Wahjudi Ayu Dahliyanti Dinny Harnany Dita Floresyona Eduardus Budi Nursanto Faizal Fatah Gede W.P. Adhyaksa Hanida Nilasary Haryo Satriya Oktaviano I Made Londen Batan Nur Layli Amanah Paramita Jaya Ratri Sugianto Sugianto Tirta Rona Mayangsari Yose Fachmi Buys Yudi Rahmawan