| 학회 |
한국재료학회 |
| 학술대회 |
2014년 봄 (05/15 ~ 05/16, 창원컨벤션센터) |
| 권호 |
20권 1호 |
| 발표분야 |
C. 에너지/환경 재료(Energy and Environmental Materials) |
| 제목 |
Electrochemical performance of NiO doped LiFePO4•/C cathode materials prepared from amorphous FePO4•xH2O |
| 초록 |
LiFePO4/C composites are prepared from amorphous FePO4•xH2O and modified by NiO (0.0, 0.01, 0.02, 0.03, and 0.04 mole) by solid state reaction process using a spex milling system. The crystalline structure and morphology of the synthesized powders have been characterized by XRD and SEM. X-ray diffraction patterns indicate a complete solid solution for all the NiO doped LiFePO4/C composites. The SEM images show that the size of particles is distributed in the range of 200-300 nm. Electrochemical performances are evaluated by impedance measurements and galvanostatic charge/discharge tests. The initial properties and impedance measurement revealed individually different improvements for different amount of NiO doping in LiFePO4/C. A maximum capacity of 158.8 mAh/g at 0.1 C was achieved at 0.01 mole NiO doped LiFePO4/C. The present work revealed that, the newly processed and small amount of NiO doped LiFePO4/C composite could be promising cathode material for lithium-ion battery. |
| 저자 |
Dong-Seob Kim1, Iqbal Mahmud2, Man-Soon Yoon1, Soon-Chul Ur2
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| 소속 |
1Department of Materials Science and Engineering, 2Korea National Univ. of Transportation |
| 키워드 |
Spex milling; SEM; XRD; cathode materials; Li-ion battery; Nickel oxide.
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| E-Mail |
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