کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1612993 | 1516308 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An excellent performance anode of ZnFe2O4/flake graphite composite for lithium ion battery
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
An approach of hydrothermal reaction for lithium ion battery was adopted, by which ZnFe2O4/flake graphite composites with excellent performance could be prepared as anode materials for lithium ion batteries. With nano-sized ZnFe2O4 particles coating on the electrochemical active matrix of flake graphite, the special composites allowed improved electronic conductivity and constructed an expressway for the transport of charges and lithium ions. Thus the ZnFe2O4/flake graphite anode became a compromise between capacity and cycle ability. The initial discharge-charge capacity was 848 mAÂ h gâ1 and 744 mAÂ h gâ1 at a constant current density of 100Â mAÂ gâ1, respectively. As high as 87.7% of the initial coulombic efficiency was obtained. Additionally, the charge capacity maintained constantly in the range of 720-735 mAÂ h gâ1 in following cycles. And a high reversible charge capacity of 730 mAÂ h gâ1 could be attained after 100 cycles, with the reversible capacity retention of 98%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 585, 5 February 2014, Pages 398-403
Journal: Journal of Alloys and Compounds - Volume 585, 5 February 2014, Pages 398-403
نویسندگان
Lingmin Yao, Xianhua Hou, Shejun Hu, Xiaoqin Tang, Xiang Liu, Qiang Ru,