A5038275790- Supercapacitor Materials and Fabrication
- Electrocatalysts for Energy Conversion
- Advancements in Battery Materials
- Fuel Cells and Related Materials
- Advanced battery technologies research
- Graphene research and applications
- Electrospun Nanofibers in Biomedical Applications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Battery Technologies Research
- Graphene and Nanomaterials Applications
- Catalysis and Hydrodesulfurization Studies
- Carbon and Quantum Dots Applications
- Fiber-reinforced polymer composites
- Catalytic Processes in Materials Science
- High-Temperature Coating Behaviors
- Interconnection Networks and Systems
- Conducting polymers and applications
- Nanomaterials for catalytic reactions
- Materials Engineering and Processing
- Advanced Battery Materials and Technologies
- Characterization and Applications of Magnetic Nanoparticles
- Extraction and Separation Processes
- Material Selection and Properties
- Nanotechnology research and applications
- Gas Sensing Nanomaterials and Sensors
National Research and Innovation Agency
2022-2025
Indonesian Institute of Sciences
2012-2021
Osaka University
2020-2021
University of Indonesia
2016
We report a simple and relatively low-temperature method for producing graphitic carbon from renewable abundant coconut coir. This study also aims to promote the utilisation conversion of locally sourced coir waste into value-added materials. obtained amorphous charcoal by carbonising transforming it using Ni-based catalyst at 1300 °C 3 h. The HR-TEM, XPS, XRD Raman spectroscopy results confirmed structural transformation nanostructure. formation layers is observed in form well-defined...
Nonprecious bifunctional oxygen reduction reaction (ORR)/oxygen evolution (OER) catalysts in wide pH electrolytes are crucial for the versatile use of electrochemical energy storage and conversion devices. Non-noble metal/nitrogen-doped carbon (M–N/C) has been reported as a promising candidate efficient cost-effective catalysts. Nevertheless, stability catalytic activity M–N/C range still limited, especially neutral acidic electrolytes. Here, we synthesized directly grown N-doped bamboo-like...
Graphite is a critical material for lithium-ion battery (LIB) anodes. However, its fabrication using simple route and sustainable carbon sources still remains great challenge. In this current work, we fabricate high graphitic from coconut coir waste by combining potassium hydroxide (KOH) Ni-based catalyst in one-pot graphitization process. The (1200-ANi-KOH) shows good electrochemistry performance as the anode of LIB with specific capacity 397.60 mA h/g, exceeding commercial graphite (339.90...
Seashells waste is abundant in coastal area, especially the locations where fisheries are a major occupation.This resource of seashells opens new opportunity further utilization.Seashells source CaCO 3 , which may be converted into CaO via calcination process.This study analyzed characteristics produced process at different temperature and time.The was carried out 800°C, 900°C, 1000°C with variation 2, 3, 4 hours Fourier transform infrared spectroscopy (FTIR) result showed that spectrum 2513...
Abstract In this study, activated carbon was synthesized from palm oil empty fruit bunches through two different carbonization and activation processes used as carbon-based electrodes for supercapacitor. The produced by a combination of the hydrothermal pyrolysis methods using melamine nitrogen source dopant potassium chloride an activating agent. effect temperature on crystalline structure, crystallite size, functional groups, surface characteristics resulting carbon, which applied in...
Magnetic reduced graphene oxide (MRGO) sheets were prepared by embedding Fe3O4 nanoparticles on polyvinylpyrrolidone (PVP) and poly(diallyldimethylammonium chloride) (PDDA)-modified (GO) for bacteria capture destruction under a high-frequency magnetic field (HFMF). The characteristics of MRGO evaluated systematically transmission electron microscopy (TEM), scanning (SEM), zeta potential measurement, X-ray diffraction (XRD), vibrating sample magnetometry (VSM), photoelectron spectroscopy...
Abstract Activated carbon is materials that have wide applications, including supercapacitor materials, absorbent in chemical industry, and material the industry. This study has carried out for manufacturing of activated from inexpensive through efficient processes. Carbon was made coconut fibers pyrolysis process at temperature 650, 700, 750 800°C. Aim this to obtain a large surface area. Pyrolysis an inert atmosphere (N 2 gas) 450°C 30 minutes, followed by ammonia 800°C hours. The results...
Zn-air batteries (ZABs) with neutral electrolytes offer a significantly longer lifespan and better recyclability than alkaline ones. However, low-performance bifunctional catalytic activities for oxygen reduction or evolution reaction (i.e., ORR/OER) in still hamper their development. Here, we report iron nanoparticle-decorated nitrogen/boron co-doped reduced graphene oxide aerogel (Fe-NBrGO) distinguished ORR/OER activity, enabling its application rechargeable ZABs. Taking advantage of the...
Penelitian ini menggunakan metode eksperimen. Obyek eksperimen pada penelitian adalah plat baja karbon rendah (Baja ST 37) berbentuk persegi dengan dimensi p x l t. melalui beberapa tahapan yaitu, persiapan dan pelaksanaan Persiapan meliputi benda kerja, pembersihan serta pengukuran keasaman. Dalam masing-masing terdapat 7 kombinasi perlakuan pH pencelupan yaitu 3.02, 3.23, 3.40, 3.62, 3.82, 4.02, 4.20. Analisis data dalam analisis Visual. Hasil didapat disimpulkan bahwa ada perbedaan massa...
Bipolar plates (BPP) is a vital component of proton exchange membrane fuel cells (PEMFC), which supplies and oxidant to reactive sites, remove reaction products, collects produced current provide mechanical support for the in stack. This work concerns utilization mill scale, by-product iron steel formed during hot rolling steel, as potential material use BPP PEMFC. On other hand, scale considered very rich source having characteristic required such collector would significantly contribute...
In this work, carbon composite papers (CCP) were successfully produced by mixing 80 wt% derived from coconut coir and 20 binder (ethylene vinyl acetate polyethylene glycol). The CCPs prepared with two different forms of material, i.e. powder (particle size: ± 74 µm) fiber (length: 2 mm, diameter: 100-500 µm). Two types developed based on their composition. first type, called CCP-1, was made in form (80 wt%), while the second one, CCP-2, a combination (70 wt%) (10 wt%). influence CCP...
Limbah perkebunan berupa tandan kosong kelapa sawit (TKKS) dapat dimanfaatkan sebagai bahan karbon yangbernilai guna lebih tinggi. Pada penelitian ini dibahas tentang proses pembuatan dan karakterisasi kertas denganmemanfaatkan serat TKKS bakunya. Kertas yang dihasilkan diaplikasikan GasDiffusion Layer (GDL) PEMFC. Pembuatan pada kali terdiri dari 2 tahap yaitu bahankarbon karbon. pertama, karbonisasidan pirolisis hingga suhu 1300oC. Bahan selanjutnya digunakan dasaruntuk kedua. dilakukan...
We report a highly stretchable sensor with low-concentration (1.5 wt %) single-walled carbon nanotubes (SWCNTs) on flexible polyether ester urethane (PEEU) yarn, fabricated using low hydrothermal process at 90 °C. Although SWCNTs restrict the PEEU polymer chain mobility, resulting ductility of our nanocomposites reduces only by 16.5% average, initially from 667.3% elongation break to 557.2%. The electrical resistivity can be controlled systematically number cycles. A high gauge factor value...