کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7745992 | 1498280 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low temperature molten salt synthesis of anatase TiO2 and its electrochemical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study investigates the electrochemical properties of TiO2 nanoparticles that were obtained using molten salt method (MSM) synthesis when applied as anodic material for lithium-ion batteries. TiO2 nanoparticles were synthesized from 0.62LiNO3:0.38LiOH molten salt at 180 °C for 2 h in air followed by reheating at 300 °C for 2 h in air. Another separate sample was prepared in addition to molten salt and urea was added then heated at 180 °C for 2 h. X-ray diffraction studies showed a single anatase phase, with characteristic lattice parameter values of a = 3.81 Ã
and c = 9.46 Ã
. Cyclic voltammetry studies on the TiO2 nanoparticles show main cathodic and anodic redox peaks at ~ 1.7 and ~ 1.9 V respectively. Further galvanostatic discharge-charge cycling studies were performed on all samples at a current rate of 30 mA/g. TiO2 nanoparticles synthesized at 180 °C for 2 h and treated with urea delivered a high reversible capacity of ~ 275 mAh/g, whereas TiO2 reheated at 300 °C displayed a capacity of ~ 215 mAh/g. In both compounds capacity fading was found to be at 9.8 to 15% between 5 and 60 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 262, 1 September 2014, Pages 120-123
Journal: Solid State Ionics - Volume 262, 1 September 2014, Pages 120-123
نویسندگان
M.V. Reddy, S. Adams, Galen Tiong Ji Liang, Ian Foo Mingze, Huynh Van Tu An, B.V.R. Chowdari,