کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760477 | 1498049 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural and electrochemical properties of Li1+xNi0.5Mn0.5O2+δ (0 ⤠x ⤠0.7) cathode materials for lithium-ion batteries
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural and electrochemical properties of Li1+xNi0.5Mn0.5O2+δ (0 ⤠x ⤠0.7) cathode materials for lithium-ion batteries Structural and electrochemical properties of Li1+xNi0.5Mn0.5O2+δ (0 ⤠x ⤠0.7) cathode materials for lithium-ion batteries](/preview/png/9760477.png)
چکیده انگلیسی
A comparative analysis of the properties of LiNi0.5Mn0.5O2 and Li1+xNi0.5Mn0.5O2 (0.2 ⤠x ⤠0.7) powders, obtained by the freeze drying method, was performed. Lattice parameters of Li1+xNi0.5Mn0.5O2 decreased considerably with growing amounts of Li until x = 0.3; at x > 0.5 trace amounts of Li2MnO3 are observed by X-ray diffraction (XRD) patterns. X-ray photoelectron spectroscopy (XPS) analysis displayed an increase of Ni3+/Ni2+ ratio at 0.3 < x < 0.5, while Mn 2p spectra were almost identical in all samples. Rechargeable capacity values (V = 2.5-4.6 V) increased systematically with x reaching its maximum (185-190 mAh gâ1) at x = 0.5. Samples with superstoichiometric lithium content also demonstrated good C rate characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 140, Issue 2, 2 February 2005, Pages 355-360
Journal: Journal of Power Sources - Volume 140, Issue 2, 2 February 2005, Pages 355-360
نویسندگان
Sun Hee Choi, O.A. Shlyakhtin, Joosun Kim, Young Soo Yoon,