کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8917100 | 1642739 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural, morphological, impedance and magnetic studies of nanostructured LiNi0.45M0.1Mn0.45O2 (MCu and Al) cathode materials for lithium-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Layered structure LiNi0.45M0.1Mn0.45O2 (MCu and Al) cathode materials for lithium-ion batteries are synthesized by sol-gel auto combustion method. The structural, morphological, electrical and magnetic properties are examined by X-ray diffraction (XRD), field effect scanning electron microscope FESEM, FT-IR, EIS and ESR. XRD data revealed the rhombohedral and α-NaFeO2 structure with a space group R-3m. The electrical conductivity, dielectric constant, and dielectric loss are measured in the room temperature at a frequency ranging from 20 Hz to 1 MHz. The electrical conductivity of the compound is measured by AC impedance. An effective improvement in the electrical conductivity of order 5.42 Ã 10â6 S/cm is observed for the copper doped LNMO compounds. ESR spectra is recorded at room temperature on a Bruker EMX model X-band spectrometer operating at a frequency of 9.50 GHz. The critical dopants of Cu, with minimum g-factor and maximum line-width (W) are observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: South African Journal of Chemical Engineering - Volume 24, December 2017, Pages 213-221
Journal: South African Journal of Chemical Engineering - Volume 24, December 2017, Pages 213-221
نویسندگان
N. Murali, S.J. Margarette, V. Kondala Rao, J. Madhuri Sailaja, Tulu Wegayehu Mammo, P. Himakar, B. Kishore Babu, V. Veeraiah,