کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7833129 | 1503515 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
MnO@Al2O3 with high cycle performance via depressing solution of Mn for lithium-ion batteries anode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The capacities fade of manganese oxide originating from the well-known Mn dissolution in electrolyte. Suppressing the dissolution of Mn elements can result in a significant enhancement of the cycling performance of anode materials. Surface coating of active material is one of the most effective strategies, especially; aluminum oxide is most widely adopted coating material to improve anode materials performance. Here we report, Al2O3 layer is coated on the surface and little Al-ions are diffused into MnO electrode prevents dissolution of manganese elements in electrolyte, decrease capacity fade and maintain structure stability of the active material. MnO@Al2O3 composite electrode delivers an initial discharging/charging capacities of 1390/822â¯mAâ¯hâ¯gâ1 at current rate of 100â¯mAâ¯gâ1 and maintains high reversible charging capacity of 855â¯mAâ¯hâ¯gâ1 after 100 cycles. Al2O3 coating prevents decomposition of manganese oxide in electrolyte and enhances the cycling stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 457, 1 November 2018, Pages 831-837
Journal: Applied Surface Science - Volume 457, 1 November 2018, Pages 831-837
نویسندگان
Inam Ullah, Youlong Xu, Xiaofei Sun, Wasif ur rehman, Yuan Zhang, Long Li,