| 학회 |
한국재료학회 |
| 학술대회 |
2009년 가을 (11/05 ~ 11/06, 포항공과대학교) |
| 권호 |
15권 2호 |
| 발표분야 |
C. Energy and the Environment(에너지 및 환경재료) |
| 제목 |
Micro-structural effects of NASICON structure electrolytes for lithium ion batteries prepared by mechanical milling |
| 초록 |
Li1+xAlxTi2-x(PO4)3, NASICON structure electrolytes for lithium ion batteries, were prepared through starting materials were nano-sized and amorphousized by mechanical milling. The changes of crystalline structures and grains were studied by X-ray diffraction and scanning electron microscopy. The milled amorphous sample was crystallized to pure Li1+xAlxTi2-x(PO4)3 without a grain growth of other structures, but non-milled specimen showed complex diffraction peaks including Li(PO3) and TiP2O7 structures originated at Ti-poor and Li-poor regions. The scanning electron microscope revealed the presence of primary crystalline phase with an average grain size of 1 μm. The electrochemical characterization investigated by AC impedance analyzer showed grain and grain boundary contributions . |
| 저자 |
윤용섭, 김정훈, 김연갑, 신동욱
|
| 소속 |
한양대 |
| 키워드 |
NASICON; Lithium batteries; mechanical milling
|
| E-Mail |
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