Electrochemical performance of surfactant-processed LiFePO4 as a cathode material for lithium-ion rechargeable batteries
| العنوان: | Electrochemical performance of surfactant-processed LiFePO4 as a cathode material for lithium-ion rechargeable batteries |
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| المؤلفون: | Purushottam Kumar, Brij M. Moudgil, Jungbae Lee, Rajiv K. Singh, Gwangwon Lee |
| المصدر: | Ionics. 19:371-378 |
| بيانات النشر: | Springer Science and Business Media LLC, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | Materials science, General Chemical Engineering, General Engineering, Analytical chemistry, General Physics and Astronomy, Electrochemistry, Pulmonary surfactant, Specific surface area, Particle-size distribution, Electrode, General Materials Science, Particle size, Polarization (electrochemistry), Ball mill |
| الوصف: | This study focuses on the effect of addition of surfactant as a dispersing agent during vibratory ball milling of LiFePO4 (LFP) precursor materials on the electrochemical performance of solid-state reaction synthesized LFP for lithium-ion battery cathode material. LFP particles formed after calcinations of ball milled LFP precursors (Li2CO3, FeC2O4, and NH4H2PO4) showed better size uniformity, morphology control, and reduced particle size when anionic surfactant (Avanel S-150) was used. The specific surface area of LFP particles increased by approximately twofold on addition of surfactant during milling. These particles showed significantly enhanced cyclic performance during charge/discharge due to a reduced polarization of electrode material. Electrodes fabricated from LFP particles by conventional milling process showed a 22 % decrease in capacity after 50 cycles, whereas the performance of electrode prepared by surfactant processed LFP showed only 3 % loss in capacity. The LFP particles were characterized using XRD, FE-SEM, particle size distribution, density measurement, and BET-specific surface area measurement. Electrochemical impedance spectra and galvanostatic charge/discharge test were performed for the electrochemical performance using coin-type cell. |
| تدمد: | 1862-0760 0947-7047 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::006b790affbb28753253a6a0b095b18d https://doi.org/10.1007/s11581-012-0830-9 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........006b790affbb28753253a6a0b095b18d |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 18620760 09477047 |
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