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Ditemukan 4 dokumen yang sesuai dengan query
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Nofrijon Sofyan
Performance of vanadium-doped lifepo4/c used as a cathode for a lithium ion battery
" Vanadium-doped LiFePO4/C used as a cathode for a lithium ion battery has been successfully synthesized. In this work, LiFePO4 was synthesized from LiOH, NH4H2PO4, and FeSO4.7H2O at a stoichiometric amount. Vanadium was added in the form of H4NO3V at concentration variations and 3 wt.% carbon black. The characterization includes thermal analysis, X-ray diffraction, electron microscopy, and electrical impedance spectroscopy. The thermal analysis results showed that the LiFePO4 formation temperature is 653.8?700.0°C. The X-ray diffraction results showed an olivine structure with an orthorhombic space group, whereas ... "
2016
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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Nofrijon Sofyan
Performance of vanadium-doped lifepo4/c used as a cathode for a lithium ion battery
" Vanadium-doped LiFePO4/C used as a cathode for a lithium ion battery has been successfully synthesized. In this work, LiFePO4 was synthesized from LiOH, NH4H2PO4, and FeSO4.7H2O at a stoichiometric amount. Vanadium was added in the form of H4NO3V at concentration variations and 3 wt.% carbon black. The characterization includes thermal analysis, X-ray diffraction, electron microscopy, and electrical impedance spectroscopy. The thermal analysis results showed that the LiFePO4 formation temperature is 653.8–700.0°C. The X-ray diffraction results ... "
Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 7:8 (2016)
Artikel Jurnal  Universitas Indonesia Library
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Subkhan Alfaruq
Optimasi performa katoda baterai lithium iron phosphate (LIFePo4) doping vanadium dengan coating karbon aktif dari bambu = Optimizing performance of lithium iron phosphate (LIFeP04) cathode vanadium doping with activated carbon coating from bamboo
" Telah dilakukan sintesis LiFePO4 melalui metode hidrotermal dengan penambahan variasi vanadium dan pelapisan karbon aktif dari bambu untuk katoda baterai litium ion. Pada sintesis LiFePO4, bahan dasar yang digunakan adalah serbuk LiOH, NH4H2PO4 dan FeSO4.7H2O yang diukur sesuai stokiometri dengan perbandingan molar 2:1:1. Setelah proses sintesis, dilakukan penambahan variasi vanadium yang berbahan dasar H4NO3V dan pelapisan karbon aktif yang berasal dari bambu sebanyak 4 wt. Pencampuran dilakukan menggunakan ball-mill lalu dikarakterisasi menggunakan analisis termal STA ... "
Depok: Fakultas Teknik Universitas Indonesia, 2017
S68946
UI - Skripsi Membership  Universitas Indonesia Library
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Nofrijon Sofyan
Fabrication of solar cells with tio2 nanoparticles sensitized using natural dye extracted from mangosteen pericarps
" Faced with ever-shrinking reserves of fossil-based energy, in addition to the damaging impacts of the use of fossil-based energy sources, such as the greenhouse effect and global warming, efforts are needed to find energy alternatives. Currently under development as an alternative source of renewable energy, utilizing solar energy as its source, is a device incorporating the dye-sensitized solar cell (DSSC), which works using the simple photosynthetic-electrochemical principle at the molecular level. In this type of ... "
Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 8:7 (2017)
Artikel Jurnal  Universitas Indonesia Library