کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8019912 | 1517257 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A facile process for coating amorphous FePO4 onto LiNi0.8Co0.15Al0.05O2 and the effects on its electrochemical properties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A facile process for coating amorphous FePO4 onto LiNi0.8Co0.15Al0.05O2 and the effects on its electrochemical properties A facile process for coating amorphous FePO4 onto LiNi0.8Co0.15Al0.05O2 and the effects on its electrochemical properties](/preview/png/8019912.png)
چکیده انگلیسی
Ni-rich layered LiNi0.8Co0.15Al0.05O2 is coated with amorphous FePO4 in an ethanol-based colloidal solution. X-ray diffraction (XRD) measurements indicate that the coated sample is pure hexagonal phase without any crystalline FePO4 in it. Additionally, the lattice parameters a and c are not influenced by the coating layer. The morphologies of the samples are characterized by scanning electron microscope (SEM) analysis. Compared with the pristine sample, the FePO4-coated one shows no change on morphology. However, an amorphous FePO4 coating layer can be observed through transmission electron microscope (TEM) analysis. Moreover, energy dispersive spectrometer (EDS) elemental mappings results confirm that the FePO4 uniformly coats on the host material. By electrochemical characterizations, it is proved that the capacity retention of the FePO4-coated sample is much higher than that of the pristine one. After 100 charge-discharge cycles at 2Â C rate, the pristine and FePO4-coated samples exhibit the capacity retentions of 70.7% and 88.3%, respectively. Furthermore, the impedance increasing during charge-discharge cycles is slowed down by the FePO4 coating layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 131, 15 September 2014, Pages 210-213
Journal: Materials Letters - Volume 131, 15 September 2014, Pages 210-213
نویسندگان
Bin Huang, Xinhai Li, Zhixing Wang, Huajun Guo,