Synthesis of olivine-type LiFePO4 by emulsion-drying method
| Autor: | Hoon-Taek Chung, Tae-Hyung Cho |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
X-ray absorption spectroscopy
Absorption spectroscopy Renewable Energy Sustainability and the Environment Rietveld refinement Chemistry Analytical chemistry Energy Engineering and Power Technology Carbon black Crystal structure law.invention law Calcination Orthorhombic crystal system Particle size Electrical and Electronic Engineering Physical and Theoretical Chemistry |
| Zdroj: | Journal of Power Sources. 133:272-276 |
| ISSN: | 0378-7753 |
| Popis: | Olivine-type, orthorhombic, LiFePO4 powders with small particle size have been successfully synthesized by the emulsion-drying method. The electronic and crystal structure is analyzed by X-ray absorption spectroscopy (XAS) and X-ray diffraction Rietveld refinement. The powder calcined at 750 °C shows the highest discharge capacity of 125 mAh g−1 with excellent cycle stability. The discharge capacity of this powder increases to 154 mAh g−1 on increasing the addition of carbon black as a conductive agent up to 40 wt.%. In a rate capability test, the discharge capacity is completely recovered and retained up to the 700th cycle. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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