کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6616936 | 459629 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The essential role of aggregate porosity in improving the performance of LiMnPO4/C
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
LiMnPO4/C samples synthesized by two different methods are characterized by physical and electrochemical measurements and the importance of porosity on the electrochemical activity is investigated. The LiMnPO4/C synthesized by solid-state route has porous micro-aggregates while the micro-aggregates of the LiMnPO4/C synthesized by wet-chemistry route are dense. The difference in porosity of the two samples leads to a significantly different electrochemical activity. When cycled at the rate of 0.1 C, the sample synthesized by solid-state route can deliver a capacity of 121 mAh gâ1, while the sample synthesized by wet-chemistry route can only deliver a capacity of 36 mAh gâ1. Our result demonstrates that the formation of sufficient pores in the aggregates is essential to achieve high electrochemical activity for LiMnPO4 based material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 106, 1 September 2013, Pages 215-218
Journal: Electrochimica Acta - Volume 106, 1 September 2013, Pages 215-218
نویسندگان
Haisheng Fang, Yuejiao Hu, Enrui Dai, Bin Yang, Yaochun Yao, Wenhui Ma, Yongnian Dai,