کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1614024 | 1516324 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical characterization of LiFePO4/poly (sodium 4-styrenesulfonate)-multi walled carbon nanotube composite cathode material 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: Electrochemical characterization of LiFePO4/poly (sodium 4-styrenesulfonate)-multi walled carbon nanotube composite cathode material for lithium ion batteries Electrochemical characterization of LiFePO4/poly (sodium 4-styrenesulfonate)-multi walled carbon nanotube composite cathode material for lithium ion batteries](/preview/png/1614024.png)
چکیده انگلیسی
LiFePO4 is a promising cathode material for lithium ion batteries and is prepared by a hydrothermal method. However, its practical application is limited due to its poor conductivity. In order to improve the electronic conductivity, we added poly (sodium 4-styrenesulfonate) (PSS) and multi walled carbon nanotube (MWCNT) in LiFePO4. In the results, PSS stacks and forms a layer about 3-6 nm around the surface of LiFePO4 particles. MWCNT provides pathways for electron transport. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic discharge testing results indicate that LiFePO4/PSS-MWCNT composite exhibits higher discharge capacity than pure LiFePO4. LiFePO4/PSS(2.5%)-MWCNT(2.5%) shows the best discharge capacity of 144 mAh gâ1 at 2nd cycle, and high electronic conductivity of 6.3 Ã 10â3 S cmâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 569, 25 August 2013, Pages 29-34
Journal: Journal of Alloys and Compounds - Volume 569, 25 August 2013, Pages 29-34
نویسندگان
Van Hiep Nguyen, Wan Lin Wang, En Mei Jin, Hal-Bon Gu,