کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1613964 | 1516321 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and electrochemical performance of Li2FeSiO4/C/carbon nanosphere composite cathode materials for lithium ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and electrochemical performance of Li2FeSiO4/C/carbon nanosphere composite cathode materials for lithium ion batteries Synthesis and electrochemical performance of Li2FeSiO4/C/carbon nanosphere composite cathode materials for lithium ion batteries](/preview/png/1613964.png)
چکیده انگلیسی
Li2FeSiO4/C/carbon nanosphere (CNS) composites as cathode materials for lithium-ion batteries were synthesized by a simple hydro-chemical method. The double-carbon structural design of glucose pyrolysis-carbon (C) and CNS improved electrochemical performance of the composite where the CNS can build conductivity belts to connect the Li2FeSiO4/C particles and to favor electronic transmission. The exchange current density and the diffusion coefficient of lithium ions with the composite were 0.208 mA cmâ2 and 1.06Eâ11 cm2 Sâ1, respectively, which were much larger than that of conventional Li2FeSiO4/C composite cathode materials (i = 0.131 mA cmâ2, DLi = 4.69Eâ12 cm2 Sâ1). The electrochemical test results showed that the discharge capacity of 164.7 mA h gâ1 could be obtained, and especially, after 60 cycles, 98.4% of the initial discharge capacity remained at 0.1 C of galvanostatic discharge in the potential range of 1.5-4.8 V (vs. Li/Li+). In addition, the discharge capacity of 92.4 mA h gâ1 at 5 C was easily recovered to 159.8 mA h gâ1 at 0.1 C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 572, 25 September 2013, Pages 158-162
Journal: Journal of Alloys and Compounds - Volume 572, 25 September 2013, Pages 158-162
نویسندگان
Jinlong Yang, Xiaochun Kang, Lin Hu, Xue Gong, Daping He, Tao Peng, Shichun Mu,