کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7702147 | 1496856 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasound-assisted synthesis of NiFe- layered double hydroxides as efficient electrode materials in supercapacitors
ترجمه فارسی عنوان
سنتز هیدروکسید دو لایه نیکل به عنوان مواد الکترودهای کارآمد در ابررایانه ها
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
چکیده انگلیسی
Under ultrasound irradiation, NiFe-layered double hydroxide (NiFe-LDH) nanostructures with three molar ratios and three dissimilar reaction times were prepared. The powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and Fourier transform infrared spectroscopy (FT-IR) were employed to characterize the synthesized nanomaterials. Using a sonochemichal route, various morphologies of the NiFe-LDH nanostructures without any impurity and variations in the structure were produced. During the optimization process, it was found that sonication time and reagent concentration in a fixed irradiation frequency can affect the size and the morphology of the produced nanostructures. Under ultrasound irradiation, non-aggregated particles with uniform, spherical morphology were obtained with molar ratios of 4:1 (Ni:Fe) with 45â¯W at 180â¯min. The NiFe-LDH samples were observed to be supercapacitor under a 6â¯M KOH solution. When morphologically-controlled NiFe-LDH samples were used, the pseudo-capacitive behavior of the nanostructures was tuned. After 3â¯h of ultrasonic irradiation, the optimized sample (NiFe-LDH spherical nanostructures with 4:1â¯M ratio) had a high value of specific capacitance (168Fâ¯gâ1).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 48, November 2018, Pages 199-206
Journal: Ultrasonics Sonochemistry - Volume 48, November 2018, Pages 199-206
نویسندگان
Soheila Sanati, Zolfaghar Rezvani,