کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1288085 1645393 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced storage property of LiNi0.8Co0.15Al0.05O2 coated with LiCoO2
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Enhanced storage property of LiNi0.8Co0.15Al0.05O2 coated with LiCoO2
چکیده انگلیسی

The storage properties of LiNi0.8Co0.15Al0.05O2 and LiCoO2-coated LiNi0.8Co0.15Al0.05O2 have been investigated comparatively. It is found that the latter exhibits better storage stability than the former. After storage in air at different relative humidities, LiCoO2-coated LiNi0.8Co0.15Al0.05O2 shows little changes in the aspects of weight, nickel oxidation state, moisture and carbon contents and electrochemical performance. However, for LiNi0.8Co0.15Al0.05O2, the higher the air humidity is, the bigger these aspects change. Fourier transformed infrared (FTIR) spectrum reveals that LiCoO2-coated LiNi0.8Co0.15Al0.05O2 is resistant to H2O and CO2 in air. X-ray photoelectron spectroscopy gives evidence that the LiCoO2 coating layer suppresses effectively the reactions between LiNi0.8Co0.15Al0.05O2 and atmosphere, which contributes to the enhancement of storage performance of LiCoO2-coated LiNi0.8Co0.15Al0.05O2.


► LiCoO2-coated LiNi0.8Co0.15Al0.05O2 shows better storage stability compared to LiNi0.8Co0.15Al0.05O2.
► The properties of LiCoO2-coated LiNi0.8Co0.15Al0.05O2 have almost nothing to do with the air humidity.
► LiCoO2-coated LiNi0.8Co0.15Al0.05O2 is resistant to H2O and CO2 in air.
► The LiCoO2 coating layer suppresses effectively the reactions between LiNi0.8Co0.15Al0.05O2 and atmosphere.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 230, 15 May 2013, Pages 201–206
نویسندگان
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