| 학회 |
한국재료학회 |
| 학술대회 |
2011년 가을 (10/27 ~ 10/29, 신라대학교) |
| 권호 |
17권 2호 |
| 발표분야 |
C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 |
Effects of pre-milled nano-sized starting materials on the microstructure & electrochemical properties of LiFePO4/C composite cathodes. |
| 초록 |
Lithium iron phosphate (LFP) is competitive to replace the expensive LiCoO2 presently used and being considered as a cathode material for the next generation of lithium ion batteries especially for use in hybrid electric Vehicles (HEV’s) and electronic vehicles (EV’s), because of it’s inherent merits. However, its power performance is greatly limited by slow diffusion of lithium ions across the two phase boundary and low electronic conductivity. Although there are many synthesis routes such as sol-gel, hydrothermal/solvothermal, co-precipitation, polyol, inothermal process, solid state carbothermal reduction method is best for large-scale industrial production of LiFePO4. So LiFePO4/C composite were synthesized by this method using nano-milled precursor in order to overcome the low lithium ion diffusion impediment and glucose, a cheap carbon source, as conductive coating of LiFePO4 particles which also prevent the growth of LiFePO4 particles during calcination & as a reducing agent. The pre-synthesized precursor FePO4 and LiFePO4/C composite were characterized by DSC. The microstructure & morphology of the samples characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) & particle size analysis. Cyclic Voltametry (CV) & charge/discharge cycling performance were used to characterize their electrochemical properties. |
| 저자 |
Man-Soon Yoon1, Mobinul Islam2, Iqbal Mahmud3, Soon-Chul Ur4
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| 소속 |
1Dept. of Material Sci. and Eng., 2Research centre for Sustainable Eco-Devices and Materials (ReSEM), 3Chungju National Univ., 4Chungbuk |
| 키워드 |
Cathode material; Pre-milled precursor; Carbothermal reduction; Glucose; Conductive coating.
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| E-Mail |
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